Android Programmer's guide

Global Array List

2013-03-11T20:49:00.001+05:30

public static List<QuizQuestion> matchlist;

ArrayList<QuizQuestion> quest;

JSONObject Question = (new JSONObject(jstring))
.getJSONObject("");

Integer length = Question.length();
quest = new ArrayList<QuizQuestion>(length);
quizquestion = new QuizQuestion();

quizquestion = new QuizQuestion();
for (int i = 0; i < length; i++) {
quizquestion = new QuizQuestion();
//all the code.

quest.add(i, quizquestion);
}
Global.setMatchlist(quest);

Checkmail

2013-03-11T20:29:00.001+05:30

public boolean checkmail(String email2) {
Pattern pattern = Pattern
.compile("^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\\.([a-zA-Z])+([a-zA-Z])+");
return pattern.matcher(email2).matches();
}

DOM Parser

2013-03-11T17:44:00.000+05:30

[sourcecode language="xml"]
<maintag>
<item>
<name>AndroidPeople</name>
<website category="android">www.androidpeople.com</website>
</item>
<item>
<name>iPhoneAppDeveloper</name>
<website category="iPhone">www.iphone-app-developer.com</website>
</item>
</maintag>
[/sourcecode]

Source Code

import java.net.URL;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.TextView;

public class XMLParsingDOMExample extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

/** Create a new layout to display the view */
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);

/** Create a new textview array to display the results */
TextView name[];
TextView website[];
TextView category[];

try {

URL url = new URL(
"http://www.androidpeople.com/wp-content/uploads/2010/06/example.xml");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new InputSource(url.openStream()));
doc.getDocumentElement().normalize();

NodeList nodeList = doc.getElementsByTagName("item");

/** Assign textview array lenght by arraylist size */
name = new TextView[nodeList.getLength()];
website = new TextView[nodeList.getLength()];
category = new TextView[nodeList.getLength()];

for (int i = 0; i < nodeList.getLength(); i++) {

Node node = nodeList.item(i);

name[i] = new TextView(this);
website[i] = new TextView(this);
category[i] = new TextView(this);

Element fstElmnt = (Element) node;
NodeList nameList = fstElmnt.getElementsByTagName("name");
Element nameElement = (Element) nameList.item(0);
nameList = nameElement.getChildNodes();
name[i].setText("Name = "
+ ((Node) nameList.item(0)).getNodeValue());

NodeList websiteList = fstElmnt.getElementsByTagName("website");
Element websiteElement = (Element) websiteList.item(0);
websiteList = websiteElement.getChildNodes();
website[i].setText("Website = "
+ ((Node) websiteList.item(0)).getNodeValue());

category[i].setText("Website Category = "
+ websiteElement.getAttribute("category"));

layout.addView(name[i]);
layout.addView(website[i]);
layout.addView(category[i]);

}
} catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}

/** Set the layout view to display */
setContentView(layout);

}
}

Creating a layout with Relative Layout

2013-03-06T09:46:00.001+05:30

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/body_bg"
tools:context=".LoginActivity" >

<include
android:id="@+id/header_lyt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
layout="@layout/header_layout" >
</include>

<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/header_lyt"
android:layout_marginTop="20dip"
android:padding="10dip" >

<RelativeLayout
android:id="@+id/Layout_Email_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center" >

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>

<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/logo_img"
android:src="@drawable/login_logo"
android:paddingLeft="110dip"
/>

</LinearLayout>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_Password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_Email_id"
android:layout_gravity="center"
android:layout_marginTop="1dip" >

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"

>

<TextView
android:id="@+id/logo"
android:layout_width="wrap_content"
android:paddingLeft="45dip"

android:textColor="#000000"
android:textSize="34dip"
android:text="@string/app_name"
android:layout_height="wrap_content" />
</LinearLayout>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_desc"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_Password"
android:layout_gravity="center"
android:layout_marginTop="1dip" >

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"

>

<TextView
android:id="@+id/logo"
android:layout_width="wrap_content"
android:paddingLeft="42dip"
android:textColor="#000000"
android:textSize="10dip"
android:text="Relationship Management Tools by DeltaPoint"
android:layout_height="wrap_content" />
</LinearLayout>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_seprator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_desc"
android:layout_gravity="center"
android:layout_marginTop="1dip" >

<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/seperator"
android:layout_centerInParent="true"
/>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_detail"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_seprator"
android:layout_gravity="center"
android:layout_marginTop="6dip" >

<TextView
android:id="@+id/tx_detail"
android:layout_width="wrap_content"

android:textColor="#000000"
android:textSize="12dip"
android:paddingLeft="15dip"
android:textStyle="bold"
android:layout_centerVertical="true"
android:text="Enter your Login Details"
android:layout_height="wrap_content" />

<TextView
android:id="@+id/tx_newuser"
android:layout_toRightOf="@id/tx_detail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="27dip"
android:textSize="12dip"
android:layout_centerVertical="true"
android:text="New User?"
android:textColor="#000000"></TextView>
<Button
android:id="@+id/signuplbl"
android:layout_centerVertical="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginRight="22dip"
android:text="Sign Up"
android:textColor="#ffffff"
android:textSize="10dip"
android:background="@drawable/sign_up"
/>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_userid"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_detail"
android:layout_gravity="center"
android:layout_marginTop="4dip" >

<TextView
android:id="@+id/tx_userid"
android:layout_width="wrap_content"

android:textColor="#000000"
android:textSize="12dip"
android:paddingLeft="15dip"
android:textStyle="bold"
android:layout_centerVertical="true"
android:text="User ID:"
android:layout_height="wrap_content" />

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_userid_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_userid"
android:layout_gravity="center"
android:layout_marginTop="4dip" >

<com.realationshiplink.util.CustomEditTextLarge
android:id="@+id/useridtxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:paddingLeft="15dip"
android:layout_marginLeft="15dip"
android:imeOptions="actionDone"
android:ems="5"
android:inputType="textEmailAddress"

/>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_pwd"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_userid_text"
android:layout_gravity="center"
android:layout_marginTop="4dip" >

<TextView
android:id="@+id/tx_pwd"
android:layout_width="wrap_content"

android:textColor="#000000"
android:textSize="12dip"
android:paddingLeft="15dip"
android:textStyle="bold"
android:layout_centerVertical="true"
android:text="Enter Your Password:"
android:layout_height="wrap_content" />

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_pwd_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_pwd"
android:layout_gravity="center"
android:layout_marginTop="4dip" >

<com.realationshiplink.util.CustomEditTextLarge
android:id="@+id/passwordtxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:paddingLeft="15dip"
android:layout_marginLeft="15dip"
android:inputType="textPassword"
android:password="true"

/>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_remember"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_pwd_text"
android:layout_gravity="center"
android:layout_marginTop="8dip" >

<CheckBox
android:id="@+id/check"
android:layout_width="24dip"
android:layout_height="24dip"

android:layout_centerVertical="true"
android:layout_marginLeft="15dip"
android:button="@drawable/remember_invisible" />

<TextView
android:id="@+id/remembermelbl"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:textColor="#2a2929"
android:textSize="12dip"
android:textStyle="bold"

android:layout_toRightOf="@+id/check"
android:text="@string/remembermestr"></TextView>

<TextView
android:id="@+id/sepreator"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="2dip"
android:layout_centerVertical="true"
android:textColor="#2a2929"

android:layout_toRightOf="@+id/remembermelbl"
android:text="|"></TextView>

<TextView
android:id="@+id/forgetpin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:textColor="@color/blue"
android:paddingLeft="2dip"
android:textSize="12dip"
android:textStyle="bold"
android:layout_toRightOf="@+id/sepreator"
android:text="Forgot Password?"></TextView>

</RelativeLayout>

<RelativeLayout
android:id="@+id/Layout_loginbutton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/Layout_remember"
android:layout_gravity="center"
android:layout_marginTop="8dip" >

<Button
android:id="@+id/submitBtn"
android:layout_centerVertical="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"

android:text="Log in"
android:textColor="#ffffff"
android:textSize="20dip"
android:textStyle="bold"

android:background="@drawable/login_bg"
/>

</RelativeLayout>

</RelativeLayout>

</RelativeLayout>

HeaderLayout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/navigation_bar">



<LinearLayout
android:id="@+id/ll"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:textSize="20dip"
android:id="@+id/header_text"
android:textColor="#000000"
android:text="WELCOME">
</TextView>

</LinearLayout>

<LinearLayout

android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">

</LinearLayout>

</RelativeLayout>

Select image from Gallery

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private PopupWindow pv = null;
ImageButton add_img;
add_img.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
LayoutInflater li = (LayoutInflater) CreateAccount.this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View popupView = li.inflate(R.layout.popup_window_layout,
(ViewGroup) findViewById(R.id.popup_layout));
cancle = (Button) popupView.findViewById(R.id.popup_cancle);
cancle.setTypeface(tf1);
cancle.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
pv.dismiss();

}
});

uploadPhoto = (Button) popupView
.findViewById(R.id.popup_upload_photo);
uploadPhoto.setTypeface(tf1);
uploadPhoto.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
System.out.println("uploadPhoto clicked");
Intent intent = new Intent();
intent.setType("image/*");

intent.setAction(Intent.ACTION_GET_CONTENT);
// setResult(Activity.RESULT_OK);
startActivityForResult(
Intent.createChooser(intent, "Select Picture"),
1111);
pv.dismiss();

}
});

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (resultCode == RESULT_OK) {

if (requestCode == 1111) {
System.out
.println("After Result 1111..........................................");

System.out.println("With in Take Image");
Uri imageUri = data.getData();
System.out.println(imageUri);
Cursor c = getContentResolver().query(imageUri, null, null,
null, null);
c.moveToFirst();
String imagePath = c.getString(c
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA));
System.out
.println("Before Setting Image:::::::::::::::::::::::::::::::::::::::::"
+ imagePath);
set_Image(imagePath);

try {
io = new FileInputStream(new File(imagePath));
System.out
.println("IO got set:::::::::::::::::::::::::::::::::::::::");
} catch (Exception e) {
e.printStackTrace();
}
image = imagePath;

}
}
super.onActivityResult(requestCode, resultCode, data);

}

private void set_Image(String imagePath) {
BitmapFactory.Options opt = null;

try {
System.out
.println("Image Path::::::::::::::::::::in Set Image::::::::::::::::::::"
+ imagePath);
FileInputStream in = new FileInputStream(imagePath);
System.out.println("1..................");
opt = new BitmapFactory.Options();
opt.inTempStorage = new byte[16 * 1024];
opt.inSampleSize = 4;
opt.outWidth = 640;
opt.outHeight = 480;
Bitmap imageBitmap = BitmapFactory
.decodeStream(in, new Rect(), opt);
Bitmap map = this.scaleDown(imageBitmap, 10, true);
BitmapDrawable bmd = new BitmapDrawable(map);

ByteArrayOutputStream bao = new ByteArrayOutputStream();

map.compress(Bitmap.CompressFormat.PNG, 90, bao);

ba = bao.toByteArray();

imagedata = Base64.encodeBytes(ba);
System.out.println("the image data is............." + imagedata);

add_img.setImageDrawable(bmd);
if (in != null) {
in.close();
}

} catch (OutOfMemoryError e) {
opt.inTempStorage = new byte[50 * 1024];
System.out.println(e.getMessage());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

XML

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="vertical"
android:id="@+id/popup_layout"
android:background="#404040">

<Button
android:id="@+id/popup_upload_photo"
android:layout_gravity="center"
android:layout_marginTop="5dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Upload Photo" android:textColor="#000000" android:textSize="14dip" android:textStyle="bold"
android:background="@drawable/btn_large_light_grey_key"/>
<Button
android:id="@+id/popup_cancle"
android:layout_gravity="center"
android:layout_marginTop="5dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel" android:textColor="#000000"
android:textSize="14dip" android:textStyle="bold"
android:background="@drawable/btln_large_dark_gray"/>
</LinearLayout>

HTTP Connection

2013-03-06T02:23:00.001+05:30

public String getProfile() {

Log.d(TAG, "getProfile");

String url

String jsonString = "";

try {

JSONObject json = new JSONObject();

json.put("uid", User.getUserid());

jsonString = getHttpConnection(url, json);

} catch (JSONException e) {

e.printStackTrace();
}

return jsonString;
}

private String getHttpConnection(String url, JSONObject json) {

Log.d(TAG, "getHttpConnection");
Log.d(TAG, "url............ " + url);
Log.d(TAG, "Json.toString() :" + json.toString());

StringBuffer sb2 = new StringBuffer("");

try {

BufferedReader bufferreader = null;

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("json", "["+ json.toString() + "]"));

int timeoutConnection = 0;
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters,timeoutConnection);

int timeoutSocket = 0;
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
DefaultHttpClient client = new DefaultHttpClient(httpParameters);
HttpPost httppost = new HttpPost(url);

UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8);
httppost.setEntity(p_entity);
Log.d(TAG, "httppost : " + httppost.toString());

HttpResponse response = client.execute(httppost);

Log.d(TAG, "request executed set ");

InputStream inputstream = response.getEntity().getContent();

Log.d(TAG, "inputstreame set ");

bufferreader = new BufferedReader(
new InputStreamReader(inputstream));

if (inputstream != null) {

bufferreader = new BufferedReader(new InputStreamReader(inputstream));

while ((line = bufferreader.readLine()) != null) {
sb2.append(line);

}
Log.d(TAG, "sb2.toString()" + sb2.toString());

} else {
sb2 = null;
}

System.out.println("Closed input stream:::::::::::::::::::::::::::::::::");
} catch (HttpHostConnectException h) {

Log.e(TAG, "HttpHostConnectException ... ");

} catch (ConnectException e) {

Log.e(TAG, "ConnectException ... ");
Intent i = new Intent(context, ConnectivityManager.class);
context.sendBroadcast(i);
} catch (ConnectionClosedException e) {

Log.e(TAG, "ConnectionClosedException ... ");
Intent i = new Intent(context, ConnectivityManager.class);
context.sendBroadcast(i);
} catch (ConnectTimeoutException e) {
Log.e(TAG, "ConnectTimeoutException ... ");
e.printStackTrace();
return null;
} catch (UnknownHostException e) {

Log.e(TAG, "UnknownHostException ... ");
e.printStackTrace();

} catch (Exception e) {
Log.e(TAG, "GeneralException ... " + e);
e.printStackTrace();

}

return sb2.toString();
}

How to get data from database file in Assest folder

2013-03-04T00:50:00.001+05:30

package com.adeptpros.trivia.db;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;

import com.adeptpros.trivia.quiz.Level;
import com.adeptpros.trivia.quiz.Question;

public class DBHelper extends SQLiteOpenHelper{

//The Android's default system path of your application database.
private static String DB_PATH = "/data/data/com.adeptpros.trivia/databases/";
private static String DB_NAME = "questionsDb";
private SQLiteDatabase myDataBase;
private final Context myContext;

/**
* Constructor
* Takes and keeps a reference of the passed context in order to access to the application assets and resources.
* @param context
*/
public DBHelper(Context context) {
super(context, DB_NAME, null, 1);
this.myContext = context;
System.out.println("With in Constructor......................");
}

/**
* Creates a empty database on the system and rewrites it with your own database.
* */
public void createDataBase() throws IOException{

boolean dbExist = checkDataBase();
if(!dbExist)
{
//By calling this method and empty database will be created into the default system path
//of your application so we are gonna be able to overwrite that database with our database.
this.getWritableDatabase();

try {
copyDataBase();
} catch (IOException e) {
throw new Error("Error copying database");
}
}
}

/**
* Check if the database already exist to avoid re-copying the file each time you open the application.
* @return true if it exists, false if it doesn't
*/
private boolean checkDataBase(){
SQLiteDatabase checkDB = null;
try{
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
}catch(SQLiteException e){
//database does't exist yet.
}
if(checkDB != null){
checkDB.close();
}

return checkDB != null ? true : false;
}

/**
* Copies your database from your local assets-folder to the just created empty database in the
* system folder, from where it can be accessed and handled.
* This is done by transfering bytestream.
* */
private void copyDataBase() throws IOException{

//Open your local db as the input stream
InputStream myInput = myContext.getAssets().open(DB_NAME);

// Path to the just created empty db
String outFileName = DB_PATH + DB_NAME;

//Open the empty db as the output stream
OutputStream myOutput = new FileOutputStream(outFileName);

//transfer bytes from the inputfile to the outputfile
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer))>0){
myOutput.write(buffer, 0, length);
}

//Close the streams
myOutput.flush();
myOutput.close();
myInput.close();

}

public void openDataBase() throws SQLException{
//Open the database
String myPath = DB_PATH + DB_NAME;
myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
}

public synchronized void close() {
if(myDataBase != null)
myDataBase.close();
super.close();
}

public void onCreate(SQLiteDatabase db) {
}

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}

// Add your public helper methods to access and get content from the database.
// You could return cursors by doing "return myDataBase.query(....)" so it'd be easy
// to you to create adapters for your views.

public List<Question> getQuestionSet(int difficulty, int numQ){
List<Question> questionSet = new ArrayList<Question>();
Cursor c = myDataBase.rawQuery("SELECT * FROM QUESTIONS WHERE DIFFICULTY=" + difficulty, null);
while (c.moveToNext()){
//Log.d("QUESTION", "Question Found in DB: " + c.getString(1));
Question q = new Question();
q.setQuestion(c.getString(1));
q.setAnswer(c.getString(2));
q.setOption1(c.getString(3));
q.setOption2(c.getString(4));
q.setOption3(c.getString(5));
q.setNote(c.getString(7));
q.setDiduknw(c.getString(8));
q.setRating(difficulty);
questionSet.add(q);
}
return questionSet;
}

public Level getSelectedLevel(int levelPosition){
openDataBase();
Cursor c = myDataBase.rawQuery("SELECT * FROM Levels WHERE Level_Number=" + levelPosition,null);
c.moveToFirst();
Level level=new Level();
level.setLevel_No(c.getInt(0));
level.setBest_Score(c.getInt(1));
level.setStar_Rating(c.getDouble(2));
level.setIsUnlocked(c.getString(3));
return level;
}

public ArrayList<Level> getUnlockedLevelsfromdb()
{

Cursor c = myDataBase.rawQuery("SELECT * FROM Levels WHERE is_Unlocked='Yes'" ,null);
c.moveToFirst();
ArrayList<Level> levels=new ArrayList<Level>();
for (int i = 0; i < c.getCount(); i++) {
Level level=new Level();
level.setLevel_No(c.getInt(0));
level.setBest_Score(c.getInt(1));
level.setStar_Rating(c.getDouble(2));
level.setIsUnlocked(c.getString(3));
levels.add(level);
c.moveToNext();
}
c.close();
return levels;
}

public void updateBestScore(int selectedPosition,ContentValues contentValues)
{
int k=myDataBase.update("Levels", contentValues, "Level_Number="+selectedPosition, null);
if(k>0)
{
System.out.println("Score Updated in Database.....");
}

}
public void updateStarCount(int selectedLevel,ContentValues contentValues)
{
int k=myDataBase.update("Levels", contentValues, "Level_Number="+selectedLevel, null);
if(k>0)
{
System.out.println("StarCount Updated in Database....."+selectedLevel);
}
}

public void UnlockNextLevel(int selectedPosition)
{
if(!myDataBase.isOpen())
openDataBase();
ContentValues contentValues=new ContentValues();
contentValues.put("is_Unlocked", "Yes");
int k=myDataBase.update("Levels",contentValues,"Level_Number="+(selectedPosition+1), null);
if(k>0)
{
System.out.println("Unlocked Successfully....."+(selectedPosition+1));
}
}
public double getStar_Rating(int level)
{
Cursor c = myDataBase.rawQuery("SELECT * FROM Levels WHERE Level_Number=" + (level) ,null);
c.moveToFirst();
if(c.getCount()!=0)
return c.getDouble(2);
else
return 0;
}

}

Spinner with databse

2012-03-20T09:12:00.002+05:30

How to populate a Spinner widget from a database

Yesterday we saw how to populate a Spinner widget from an Array, and today, as promised, I'll show you how to populate a Spinner widget from a database.

This tutorial assumes that you're using the same code we used previously (link above), essentially the only differences are that we're using a different type of Adapter (a SimpleCursorAdapter this time) and populating it with the results of a query from a database table, and we're using a separate layout item to put our colour names

Here is our new layout, called db_view_row.xml:

<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">

<TextView android:text=""
android:id="@+id/tvDBViewRow"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
</LinearLayout>

put this file in your res/layout directory in your project.

Let's assume for this example that you've already populated your database table with the same list of colours that we used previously.

Here's the statement to create our table structure:

CREATE TABLE "colours" (
"_id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
"colourName" TEXT NOT NULL
)

In our database adapter class we have a method called fetchAllColours(), which has the responsibility (probably no surprises here) of fetching all our colours ;).

At the top of our class we declare some static variables we're going to use :

public class TestDBAdapter {

public static final String KEY_TITLE = "colourName";
public static final String KEY_ROWID = "_id";

//..rest of class continues from here..

Here is this method also from our TestDBAdapter class:

public Cursor fetchAllColours()
{
if (mDb == null)
{
this.open();
}

/* here we check if our db exists as the connection might have been closed unexpectedly... and open it if it doesn't already exist*/

String tableName = "colours";

return mDb.query(tableName, new String[] { KEY_ROWID, KEY_TITLE}, null, null, null, null, null);

}

... which returns a database Cursor to our method below..

private void fillData() {
Cursor coloursCursor;
Spinner colourSpinner = (Spinner) findViewById(R.id.my_colour_spinner);
coloursCursor = thisTestDBAdapter.fetchAllColours();

startManagingCursor( coloursCursor);
/*Create an array to specify the fields we want to display in the list (only the 'colourName' column in this case) */

String[] from = new String[]{TestDBAdapter.KEY_TITLE};
/* and an array of the fields we want to bind those fields to (in this case just the textView 'tvDBViewRow' from our new db_view_row.xml layout above) */
int[] to = new int[]{R.id.tvDBViewRow};

/* Now create a simple cursor adapter.. */
SimpleCursorAdapter colourAdapter =
new SimpleCursorAdapter(this, R.layout.db_view_row, coloursCursor, from, to);

/* and assign it to our Spinner widget */
colourSpinner.setAdapter(colourAdapter);
}

Update: Due to popular demand, here is a project that demonstrates this concept:
Spinner from Database example.

.. Let me know if you're having any access issues, it's just hosted publicly from my google docs.

2012-03-19T17:21:00.000+05:30

Android Adapters: an introduction

An Adapter object acts as a bridge between an AdapterView and the underlying data for that view. The Adapter provides access to the data items. The Adapter is also responsible for making a View for each item in the data set.

An AdapterView is a view whose children are determined by an Adapter.

Some examples of AdapterViews are ListView, GridView, Spinner and Gallery.

There are several types or sub-classes of Adapter:

ListAdapter: Extended Adapter that is the bridge between a ListView and the data that backs the list. Frequently that data comes from a Cursor, but that is not required. The ListView can display any data provided that it is wrapped in a ListAdapter.

ArrayAdapter: A ListAdapter that manages a ListView backed by an array of arbitrary objects. By default this class expects that the provided resource id references a single TextView.

CursorAdapter: Adapter that exposes data from a Cursor to a ListView widget. The Cursor must include a column named "_id" or this class will not work.

HeaderViewListAdapter: ListAdapter used when a ListView has header views. This ListAdapter wraps another one and also keeps track of the header views and their associated data objects.
This is intended as a base class; you will probably not need to use this class directly in your own code.

ResourceCursorAdapter: An easy adapter that creates views defined in an XML file. You can specify the XML file that defines the appearance of the views.

SimpleAdapter: An easy adapter to map static data to views defined in an XML file. You can specify the data backing the list as an ArrayList of Maps. Each entry in the ArrayList corresponds to one row in the list.

SimpleCursorAdapter: An easy adapter to map columns from a cursor to TextViews or ImageViews defined in an XML file. You can specify which columns you want, which views you want to display the columns, and the XML file that defines the appearance of these views.

SpinnerAdapter: Extended Adapter that is the bridge between a Spinner and its data. A spinner adapter allows to define two different views: one that shows the data in the spinner itself and one that shows the data in the drop down list when the spinner is pressed.

WrapperListAdapter: List adapter that wraps another list adapter. The wrapped adapter can be retrieved by calling getWrappedAdapter().

Android in 3D

2012-03-12T19:04:00.000+05:30

A 3d platform in android.That's 3D more feature and interesting

Example.java

package com.ex;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class Example extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new GLView2(this));
}

}

GLView2

package com.ex;

import android.content.Context;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class GLView2 extends SurfaceView implements SurfaceHolder.Callback
{
SurfaceHolder holder;
ExThread gthread;
public GLView2(Context context) {
super(context);
// TODO Auto-generated constructor stub
getHolder().addCallback(this);
getHolder().setType(SurfaceHolder.SURFACE_TYPE_NORMAL);
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub

}

@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
gthread=new ExThread(this);
gthread.start();

}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub

}

}

GLThread.java

package com.ex;

import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGL11;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLContext;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.egl.EGLSurface;
import javax.microedition.khronos.opengles.GL10;

import android.app.Activity;
import android.content.Context;
import android.opengl.GLU;

import com.ex.GLView2;

public class ExThread extends Thread {
private final com.ex.GLView2 gview;
GLCube c=new GLCube();
private long startTime;
private boolean done = false;

public ExThread(com.ex.GLView2 view) {
// TODO Auto-generated constructor stub
this.gview=view;
}
public void run()
{
EGL10 gl=(EGL10)EGLContext.getEGL();
EGLDisplay display=gl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
int version[]=new int[2];
gl.eglInitialize(display, version);
int[] configSpec = { EGL10.EGL_RED_SIZE, 5,
EGL10.EGL_GREEN_SIZE, 6, EGL10.EGL_BLUE_SIZE, 5,
EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };

EGLConfig[] configs = new EGLConfig[1];
int[] numConfig = new int[1];
gl.eglChooseConfig(display, configSpec, configs, 1,
numConfig);
EGLConfig config = configs[0];

EGLContext glc = gl.eglCreateContext(display, config,
EGL10.EGL_NO_CONTEXT, null);
EGLSurface surface = gl.eglCreateWindowSurface(display,
config, gview.getHolder(), null);
gl.eglMakeCurrent(display, surface, surface, glc);

GL10 egl = (GL10) (glc.getGL());
init(egl);
while (!done) {
// Draw a single frame here...
drawFrame(egl);
gl.eglSwapBuffers(display, surface);

// Error handling
if (gl.eglGetError() == EGL11.EGL_CONTEXT_LOST) {
Context c = gview.getContext();
if (c instanceof Activity) {
((Activity) c).finish();
}
}
}
gl.eglMakeCurrent(display, EGL10.EGL_NO_SURFACE,
EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT);
gl.eglDestroySurface(display, surface);
gl.eglDestroyContext(display, glc);
gl.eglTerminate(display);

}
private void drawFrame(GL10 egl) {
// TODO Auto-generated method stub
egl.glClear(GL10.GL_COLOR_BUFFER_BIT
| GL10.GL_DEPTH_BUFFER_BIT);
egl.glMatrixMode(GL10.GL_MODELVIEW);
egl.glLoadIdentity();
egl.glTranslatef(0, 0, -3.0f);
c.draw(egl);
long elapsed=System.currentTimeMillis()-startTime;
egl.glRotatef(elapsed *(30f/1000f), 0, 1,0);
egl.glRotatef(elapsed *(15f/1000f),1, 0,0);

}
private void init(GL10 egl) {

egl.glViewport(0, 0, gview.getWidth(), gview.getHeight());
egl.glMatrixMode(GL10.GL_PROJECTION);
egl.glLoadIdentity();
float ratio = (float) gview.getWidth() / gview.getHeight();
GLU.gluPerspective(egl, 45.0f, ratio, 1, 100f);

egl.glEnable(GL10.GL_DEPTH_TEST);
egl.glDepthFunc(GL10.GL_LEQUAL);
egl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
float lightAmbient[] = new float[] { 0.2f, 0.2f, 0.2f, 1 };
float lightDiffuse[] = new float[] { 1, 1, 1, 1 };
float[] lightPos = new float[] { 1, 1, 1, 1 };
egl.glEnable(GL10.GL_LIGHTING);
egl.glEnable(GL10.GL_LIGHT0);
egl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, lightAmbient, 0);
egl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, lightDiffuse, 0);
egl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, lightPos, 0);
float matAmbient[] = new float[] { 1, 1, 1, 1 };
float matDiffuse[] = new float[] { 1, 1, 1, 1 };
egl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT,
matAmbient, 0);
egl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE,
matDiffuse, 0);
startTime=System.currentTimeMillis();

}
public void requestExitAndWait() {
// Tell the thread to quit
done = true;
try {
join();
} catch (InterruptedException ex) {
// Ignore
}
}

}

GLcube

package com.ex;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.IntBuffer;

import javax.microedition.khronos.opengles.GL10;

public class GLCube {
private IntBuffer mvertexbuffer;
public GLCube()
{
int one=65536;
int half=one/2;
int vertices[]={-half, -half, half, half, -half, half,
- -half, half, half, half, half, half,
- // BACK
- -half, -half, -half, -half, half, -half,
- half, -half, -half, half, half, -half,
// LEFT
- -half, -half, half, -half, half, half,
- -half, -half, -half, -half, half, -half,
- // RIGHT
- half, -half, -half, half, half, -half,
half, -half, half, half, half, half,
- // TOP
- -half, half, half, half, half, half,
- -half, half, -half, half, half, -half,
- // BOTTOM
-half, -half, half, -half, -half, -half,
- half, -half, half, half, -half, -half};
ByteBuffer vbb=ByteBuffer.allocateDirect(vertices.length*4);
vbb.order(ByteOrder.nativeOrder());
mvertexbuffer=vbb.asIntBuffer();
mvertexbuffer.put(vertices);
mvertexbuffer.position(0);

}
public void draw(GL10 gl)
{

gl.glVertexPointer(3,GL10.GL_FIXED, 0,mvertexbuffer);

gl.glColor4f(1, 1,1,1);
gl.glNormal3f(0,0,1);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP,0,4);
gl.glNormal3f(0,0, -1);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 4,4);

gl.glColor4f(1, 1, 1, 1);
gl.glNormal3f(-1, 0, 0);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 8, 4);
gl.glNormal3f(1, 0, 0);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 12, 4);

gl.glColor4f(1, 1, 1, 1);
gl.glNormal3f(0, 1, 0);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 16, 4);
gl.glNormal3f(0, -1, 0);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 20, 4);
}

}

Networking Concepts

2012-03-12T18:59:00.001+05:30

package com.networkingex;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class NetworkingEx extends Activity {
/** Called when the activity is first created. */
ImageView img;

private InputStream openHttpConnection(String urlstring)
throws IOException
{
InputStream in=null;
int response=-1;
URL url=new URL(urlstring);
URLConnection con=url.openConnection();
if(!(con instanceof URLConnection))
throw new IOException("NOT AN HTTP CONNECTION");
try{
HttpURLConnection httpcon=(HttpURLConnection)con;
httpcon.setAllowUserInteraction(false);
httpcon.setInstanceFollowRedirects(true);
httpcon.setRequestMethod("GET");
httpcon.connect();
response=httpcon.getResponseCode();
if(response==HttpURLConnection.HTTP_OK)
{
in=httpcon.getInputStream();
}

}catch(Exception e)
{
e.printStackTrace();
}

return in;

}
private Bitmap downloadImage(String url)
{
Bitmap bitmap=null;
InputStream in=null;
try
{
//in=openHttpConnection(url);
bitmap=BitmapFactory.decodeStream(openHttpConnection(url));
//in.close();
}catch(IOException e)
{
Toast.makeText(this, e.getLocalizedMessage(),Toast.LENGTH_LONG).show();
e.printStackTrace();

}
return bitmap;

}
private String downloadfile(String url)
{
int buffersize=200;
InputStream in=null;
try
{
in=openHttpConnection(url);
}catch(IOException e)
{
Toast.makeText(this,e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
e.printStackTrace();
}
InputStreamReader inr=new InputStreamReader(in);
int charread =0;
String str="";
char[] inputbuffer=new char[buffersize];
try
{
while((charread==inr.read(inputbuffer)))
{
String readline=String.copyValueOf(inputbuffer, 0,charread);
str+=readline;
inputbuffer=new char[buffersize];
}
in.close();
}catch(IOException e)
{
Toast.makeText(this,e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
e.printStackTrace();
}
return url;

}
private String worddefinition(String word)
{
InputStream in=null;
String strDefinition="";
try
{
in=openHttpConnection("http://services.aonaware.com/DictService/DictService.asmx/Define?word="+word);
Document doc=null;
DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
DocumentBuilder db;
try
{
db=dbf.newDocumentBuilder();
doc=db.parse(in);

}catch(ParserConfigurationException e)
{
e.printStackTrace();
}
catch(Exception e)
{
e.printStackTrace();
}
doc.getDocumentElement().normalize();
NodeList definitionElements=doc.getElementsByTagName("Definition");

// NodeList definitionElements = null;
for(int i=0;i<definitionElements.getLength();i++)
{

System.out.println("Lenght of Defintion:"+definitionElements.getLength());
Node item=definitionElements.item(1);
if(item.getNodeType()==Node.ELEMENT_NODE)
{
NodeList nodeList=item.getChildNodes();
strDefinition=nodeList.item(5).getTextContent();
/*//Element defElement=(Element)item;
NodeList wordDefinition=doc.getElementsByTagName("WordDefinition");
strDefinition="";
for(int j=0;j<wordDefinition.getLength();j++)
{
Element wordDefinitionElement =
(Element) wordDefinition.item(j);
NodeList textNodes =
((Node) wordDefinitionElement).getChildNodes();
strDefinition +=
((Node) textNodes.item(0)).getNodeValue() + ".";
}*/
/*NodeList nodeList=item.getChildNodes();
System.out.println("Lenght of Defintion:"+nodeList.getLength());

//System.out.println("Name::::::::::::::::2"+nodeList.item(2).getNodeName());
//System.out.println("Name:::::::::::::::3:"+nodeList.item(3).getNodeName());
//System.out.println("Name::::::::::::::::4"+nodeList.item(4).getNodeName());

Toast.makeText(getApplicationContext(),"Meaning is"+nodeList.item(5).getTextContent() , Toast.LENGTH_LONG).show();
//System.out.println("Name::::::::::::::::5"+nodeList.item(5).getTextContent());
*/
}
//return strDefinition;

// NodeList itemnode= definitionElements.item(1);
// System.out.println("Lenght of Defintion:"+itemnode.getLength());
/*System.out.println("title:ln"+itemnode.getNodeName());
System.out.println("title:nn"+itemnode.getNodeName());
System.out.println("title:nv"+itemnode.getNodeValue());
System.out.println("title:tc"+itemnode.getTextContent());*/
/*if(itemnode.getNodeType()==Node.ELEMENT_NODE)
{
Log.d("mg","value is"+strDefinition);
try
{
Element definitionelement=(Element)itemnode;
}catch(Exception e)
{
Toast.makeText(getApplicationContext(), e.getLocalizedMessage(),Toast.LENGTH_LONG).show();
}

for(int j=0;j<wordDefinitionElements.getLength();j++)
{
Element wordelement=(Element)wordDefinitionElements.item(j);
NodeList textnode=((Node)wordelement).getChildNodes();
if(itemnode.getNodeName().equals("WordDefinition"))
{
strDefinition=itemnode.getNodeName();
Log.d("msg is", "value is"+strDefinition);
}
//}
Toast.makeText(getApplicationContext(),strDefinition, Toast.LENGTH_LONG).show();
}*/

}

}catch(Exception e)
{
//Toast.makeText(getApplicationContext(),e.getLocalizedMessage(),Toast.LENGTH_LONG).show();
e.printStackTrace();
}
return strDefinition;
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Bitmap bitmap = null;
try
{
bitmap=downloadImage("http://cars.88000.org/wallpapers/80/Porsche_911_Police_Car.jpg");
}catch(Exception e)
{
e.printStackTrace();
}

img=(ImageView)findViewById(R.id.imageView1);
img.setImageBitmap(bitmap);
/*String str="";
try
{
str=downloadfile("http://appleinsider.com.feedsportal.com/c/33975/f/616168/index.rss");
}catch(Exception e)
{
Toast.makeText(getApplicationContext(),str, 10000).show();
e.printStackTrace();
}
try
{
String s=worddefinition("dry");
TextView tv=new TextView(this);
tv.setText(s);
}catch(Exception e)
{
Toast.makeText(getApplicationContext(), e.getLocalizedMessage(),Toast.LENGTH_LONG).show();
e.printStackTrace();
}*/
}
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/icon">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button android:id="@+id/button1" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="Button" android:background="@drawable/icon"></Button>
<ImageView android:id="@+id/imageView1"
android:layout_gravity="center"
android:layout_height="match_parent" android:layout_width="match_parent"></ImageView>
</LinearLayout>

Flickr with jason

2012-03-12T18:57:00.002+05:30

package com.jasonex1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class JsonEx extends Activity {

String apikey1="733a667ca5dd461af38f81e7b1d0e7e8";
FlickrPhoto[] photos;
int [] ph={R.drawable.icon,R.drawable.icon};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
HttpClient httpclient=new DefaultHttpClient();
HttpGet httpget=new HttpGet("http://api.flickr.com/services/rest/?method=flickr.photos.search&tags=yourTag&format=json&api_key="+ apikey1 + "&per_page=5&nojsoncallback=1");
HttpResponse response;
try
{
response=httpclient.execute(httpget);
HttpEntity entity=response.getEntity();
if(entity!=null)
{
InputStream in=entity.getContent();
BufferedReader br=new BufferedReader(new InputStreamReader(in));
StringBuilder sb=new StringBuilder();
String currentline="";
try
{
while((currentline=br.readLine())!=null)
{
Log.d("line","current line data is"+currentline);
sb.append(currentline+"\n");
}

}catch(IOException e)
{
e.printStackTrace();
}

String result=sb.toString();
Log.d("result","result is"+result);
JSONObject thedata=new JSONObject(result);
JSONObject thephotosdata=thedata.getJSONObject("photos");
JSONArray thephotodata=thephotosdata.getJSONArray("photo");
photos=new FlickrPhoto[thephotodata.length()];
for(int i=0;i<thephotodata.length();i++)
{
JSONObject photodata=thephotodata.getJSONObject(i);
photos[i]=new FlickrPhoto(photodata.getString("id"),
photodata.getString("owner"),photodata.getString("secret"),photodata.getString("server"),
photodata.getString("title"),photodata.getString("farm"));
}
in.close();

}
}catch(Exception e)
{
e.printStackTrace();
}
ListView lv=(ListView)findViewById(R.id.listView1);
lv.setAdapter(new FlickrEx(this,photos));

}
public class FlickrEx extends BaseAdapter
{
Context con;
private FlickrPhoto[] photos;
LayoutInflater inflater;
FlickrEx(Context c,FlickrPhoto[] items)
{
this.con=c;
this.photos=items;
inflater=(LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

}

@Override
public int getCount() {
// TODO Auto-generated method stub
return photos.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View photorow=inflater.inflate(R.layout.row,null);
ImageView img=(ImageView)photorow.findViewById(R.id.ImageView);
img.setImageBitmap(imageFromUrl(photos[position].makeURL()));
TextView tv=(TextView)photorow.findViewById(R.id.TextView);
tv.setText("image");

return photorow;
}
public Bitmap imageFromUrl(String url)
{
Bitmap bitmap;
URL imageurl=null;
try
{
imageurl=new URL(url);
}catch(Exception e)
{
e.printStackTrace();
}
try
{
HttpURLConnection httpconnection=(HttpURLConnection)imageurl.openConnection();
httpconnection.setDoInput(true);
httpconnection.connect();
InputStream in=httpconnection.getInputStream();
bitmap=BitmapFactory.decodeStream(in);

}catch(Exception e)
{
e.printStackTrace();
bitmap=Bitmap.createBitmap(10,10,Bitmap.Config.ARGB_8888);

}

return bitmap;

}

}
class FlickrPhoto
{
String id;
String owner;
String secret;
String server;
String title;
String farm;
public FlickrPhoto(String id1,String owner1,String secret1,String server1,String title1,String farm1)
{
this.id=id1;
this.owner=owner1;
this.secret=secret1;
this.server=server1;
this.farm=farm1;
this.title=title1;

}
public String makeURL()
{

return "http://farm" + farm + ".static.flickr.com/" + server + "/"+ id + "_" + secret + "_m.jpg";

}
}
}

Jason Example

2012-03-12T18:56:00.002+05:30

package com.jasonex;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class jasonEx extends Activity {
/** Called when the activity is first created. */

private final static String jstring= "{\"person\":{\"name\":\"A\",\"age\":30,\"children\":[{\"name\":\"B\",\"age\":5}," + "{\"name\":\"C\",\"age\":7},{\"name\":\"D\",\"age\":9}]}}";

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tx1=(TextView)findViewById(R.id.textView1);
TextView tx2=(TextView)findViewById(R.id.textView2);
TextView tx3=(TextView)findViewById(R.id.textView3);
try
{
JSONObject person=((new JSONObject(jstring)).getJSONObject("person"));
String name=person.getString("name");
Log.d("Name","name is"+name);
tx1.setText("person name is"+name);
tx2.setText(name+"is"+person.getInt("age")+"years old");
tx3.setText(name+"has"+person.getJSONArray("children").length()+"chidren");
}catch(JSONException e)
{
e.printStackTrace();

}

}
}

Creating your own keypad

2012-03-12T18:54:00.002+05:30

keypad.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/hebrwKeyboardView" android:layout_width="fill_parent"
android:layout_alignParentBottom="true" android:layout_below="@+id/xsubLayout"
android:orientation="vertical" android:background="#252625"
android:visibility="visible" android:layout_height="180sp">
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="200sp"
android:orientation="vertical" android:layout_alignParentBottom="true"
android:clipChildren="true">
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="200sp"
android:padding="0sp">
<TableRow android:layout_width="fill_parent"
android:layout_height="fill_parent" android:padding="0sp">
<LinearLayout android:baselineAligned="true"
android:layout_width="fill_parent" android:layout_height="45sp"
android:fitsSystemWindows="true">
<Button android:id="@+id/xQ" android:layout_width="30sp"
android:layout_height="fill_parent" android:text="Q"
android:textColor="#000" android:tag="Q" android:padding="0sp"
android:textStyle="bold" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xW"
android:layout_width="30sp" android:layout_height="fill_parent"
android:padding="0sp" android:textColor="#000" android:tag="W"
android:text="W" android:textStyle="bold" android:layout_gravity="left" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xE"
android:layout_gravity="left" android:layout_width="30sp"
android:padding="0sp" android:layout_height="fill_parent"
android:text="E" android:tag="E" android:textStyle="bold"
android:textColor="#000" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xR"
android:layout_width="30sp" android:layout_gravity="center_horizontal"
android:layout_height="fill_parent" android:text="R" android:tag="R"
android:textColor="#000" android:textStyle="bold"
android:fitsSystemWindows="true" android:ellipsize="marquee" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xT"
android:layout_width="33sp" android:layout_height="fill_parent"
android:layout_gravity="center_horizontal" android:text="T"
android:tag="T" android:fitsSystemWindows="true"
android:textColor="#000" android:textStyle="bold"
android:ellipsize="marquee" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xY"
android:layout_width="33sp" android:layout_height="fill_parent"
android:tag="y" android:layout_gravity="center" android:text="Y"
android:fitsSystemWindows="true" android:textColor="#000"
android:textStyle="bold" android:ellipsize="marquee" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xU"
android:layout_width="33sp" android:layout_gravity="center_horizontal"
android:layout_height="fill_parent" android:text="U" android:tag="U"
android:textColor="#000" android:textStyle="bold"
android:fitsSystemWindows="true" android:ellipsize="marquee" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xI"
android:layout_width="33sp" android:layout_height="fill_parent"
android:text="I" android:fitsSystemWindows="true" android:tag="I"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="center_horizontal" android:ellipsize="marquee" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xO"
android:layout_width="33sp" android:layout_height="fill_parent"
android:text="O" android:fitsSystemWindows="true" android:tag="O"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="center_horizontal" android:ellipsize="marquee" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xP"
android:layout_width="33sp" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold" android:text="P"
android:fitsSystemWindows="true" android:tag="P"
android:layout_gravity="center_horizontal" android:ellipsize="marquee" />
</LinearLayout>
</TableRow>
<TableRow android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout android:layout_width="fill_parent"
android:layout_height="45sp">
<Button android:layout_alignWithParentIfMissing="true"
android:soundEffectsEnabled="true" android:id="@+id/xA"
android:layout_width="30sp" android:layout_centerHorizontal="true"
android:tag="A" android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold"
android:layout_height="fill_parent" android:text="A"
android:layout_alignParentLeft="true" android:fitsSystemWindows="true" />
<Button android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:layout_toRightOf="@id/xA"
android:id="@+id/xS" android:layout_width="30sp" android:tag="S"
android:layout_gravity="center_horizontal|center_vertical|center"
android:layout_height="fill_parent" android:text="S"
android:textColor="#000" android:textStyle="bold"
android:layout_alignWithParentIfMissing="true"
android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xD"
android:layout_toRightOf="@id/xS" android:layout_width="30sp"
android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold" android:tag="D"
android:layout_height="fill_parent" android:text="D"
android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xF"
android:layout_toRightOf="@id/xD" android:layout_width="30sp"
android:tag="F" android:layout_gravity="center_horizontal|center_vertical|center"
android:layout_height="fill_parent" android:text="F"
android:textColor="#000" android:textStyle="bold"
android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xG"
android:layout_toRightOf="@id/xF" android:layout_width="33sp"
android:textColor="#000" android:textStyle="bold"
android:layout_height="fill_parent" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="G" android:text="G" android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xH"
android:layout_toRightOf="@id/xG" android:layout_width="33sp"
android:tag="H" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="center_horizontal|center_vertical|center"
android:text="H" android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xJ"
android:layout_toRightOf="@id/xH" android:layout_width="33sp"
android:textColor="#000" android:textStyle="bold"
android:layout_height="fill_parent" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="J" android:text="J" android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xK"
android:textColor="#000" android:textStyle="bold"
android:layout_toRightOf="@id/xJ" android:layout_width="33sp"
android:layout_height="fill_parent" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="K" android:text="K" android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xL"
android:textColor="#000" android:textStyle="bold"
android:layout_toRightOf="@id/xK" android:layout_width="33sp"
android:layout_height="fill_parent" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="L" android:text="L" android:fitsSystemWindows="true" />
<Button android:layout_alignWithParentIfMissing="true"
android:layout_centerHorizontal="true"
android:soundEffectsEnabled="true" android:id="@+id/xS1"
android:layout_toRightOf="@id/xL" android:layout_width="33sp"
android:textColor="#000" android:textStyle="bold"
android:layout_height="fill_parent" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="ç" android:text="ç" android:fitsSystemWindows="true" />
</RelativeLayout>
</TableRow>
<TableRow android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_gravity="fill_vertical"
android:fitsSystemWindows="true" android:orientation="horizontal">
<LinearLayout android:layout_width="fill_parent"
android:layout_height="45sp" android:gravity="bottom"
android:orientation="horizontal">
<Button android:soundEffectsEnabled="true" android:id="@+id/xS2"
android:layout_width="30sp" android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold"
android:layout_height="fill_parent" android:text="à" android:tag="à"
android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xZ"
android:layout_width="30sp" android:layout_gravity="center_horizontal|center_vertical|center"
android:layout_height="fill_parent" android:text="Z" android:tag="Z"
android:textColor="#000" android:textStyle="bold"
android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xX"
android:layout_width="30sp" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="X" android:layout_height="fill_parent" android:text="X"
android:textColor="#000" android:textStyle="bold"
android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xC"
android:layout_width="30sp" android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="C" android:layout_height="fill_parent" android:text="C"
android:textColor="#000" android:textStyle="bold"
android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xV"
android:layout_width="30sp" android:layout_height="fill_parent"
android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold" android:tag="V"
android:text="V" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xB"
android:layout_width="33sp" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="B" android:text="B" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xN"
android:layout_width="33sp" android:layout_height="fill_parent"
android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold" android:tag="N"
android:text="N" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xM"
android:layout_width="33sp" android:layout_height="fill_parent"
android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold" android:tag="M"
android:text="M" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xS3"
android:layout_width="33sp" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold" android:tag="é"
android:layout_gravity="center_horizontal|center_vertical|center"
android:text="é" android:fitsSystemWindows="true" />

<Button android:soundEffectsEnabled="true" android:id="@+id/xBack"
android:layout_width="33sp" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold" android:tag="back"
android:layout_gravity="center_horizontal|center_vertical|center"
android:fitsSystemWindows="true" android:background="@drawable/back_high" />

</LinearLayout>
</TableRow>
<TableRow android:layout_width="fill_parent"
android:layout_height="fill_parent" android:fitsSystemWindows="true"
android:orientation="horizontal">
<LinearLayout android:layout_width="fill_parent"
android:layout_height="45sp" android:gravity="bottom"
android:orientation="horizontal">
<Button android:soundEffectsEnabled="true" android:id="@+id/xChange"
android:layout_width="wrap_content" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="right" android:fitsSystemWindows="true"
android:paddingLeft="35sp" android:tag="upper" android:background="@drawable/change" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xS4"
android:layout_width="33sp" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="right" android:fitsSystemWindows="true"
android:tag="è" android:text="è" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xSpace"
android:textColor="#000" android:textStyle="bold"
android:layout_width="75sp" android:layout_height="fill_parent"
android:tag=" " android:text="|_____|" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xS5"
android:layout_width="30sp" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold"
android:layout_gravity="center_horizontal|center_vertical|center"
android:tag="û" android:text="û" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xS6"
android:layout_width="30sp" android:layout_height="fill_parent"
android:layout_gravity="center_horizontal|center_vertical|center"
android:textColor="#000" android:textStyle="bold" android:tag="î"
android:text="î" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xNum"
android:layout_width="wrap_content" android:layout_height="fill_parent"
android:textColor="#000" android:textStyle="bold" android:tag="num"
android:text="12#" android:fitsSystemWindows="true" />
<Button android:soundEffectsEnabled="true" android:id="@+id/xDone"
android:layout_width="40sp" android:layout_height="fill_parent"
android:layout_gravity="right" android:background="@drawable/hide_high"
android:textColor="#000" android:textStyle="bold" android:tag="done"
android:fitsSystemWindows="true" />
</LinearLayout>
</TableRow>
</TableLayout>
</TableLayout>
</RelativeLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:id="@+id/xMLayout"
android:background="#000000" android:layout_height="fill_parent"
android:focusable="true"
android:orientation="vertical">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:id="@+id/xsubLayout"
android:keepScreenOn="true" android:orientation="vertical"
android:layout_height="fill_parent">
<EditText android:id="@+id/xEt" android:layout_width="fill_parent"
android:focusableInTouchMode="true" android:layout_height="wrap_content" />
<EditText android:id="@+id/et1" android:layout_width="fill_parent"
android:layout_below="@+id/xEt" android:layout_height="wrap_content" />
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:id="@+id/xK1"
android:layout_height="wrap_content" android:orientation="vertical"
android:visibility="gone">
<include android:id="@+id/xKeyBoard" layout="@layout/keyboard"></include>
</RelativeLayout>
</RelativeLayout>

package com.mykey;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RelativeLayout;

public class MyKey extends Activity implements OnTouchListener,OnClickListener,OnFocusChangeListener {
/** Called when the activity is first created. */

EditText et1,et2;
private Button mBSpace, mBdone, mBack, mBChange, mNum;
private RelativeLayout mLayout, mKLayout;
private boolean isEdit = false, isEdit1 = false;
private String mUpper = "upper", mLower = "lower";
private int w, mWindowWidth;
private String sL[] = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j",
"k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w",
"x", "y", "z", "Ã§", "Ã ", "Ã©", "Ã¨", "Ã»", "Ã®" };
private String cL[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J",
"K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W",
"X", "Y", "Z", "Ã§", "Ã ", "Ã©", "Ã¨", "Ã»", "Ã®" };
private String nS[] = { "!", ")", "'", "#", "3", "$", "%", "&", "8", "*",
"?", "/", "+", "-", "9", "0", "1", "4", "@", "5", "7", "(", "2",
"\"", "6", "_", "=", "]", "[", "<", ">", "|" };
private Button mB[] = new Button[32];

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try
{
setContentView(R.layout.main);
setKeys();
setFrow();
setSrow();
setTrow();
setForow();
et1 = (EditText) findViewById(R.id.xEt);
et1.setOnTouchListener(this);
et1.setOnFocusChangeListener(this);
et2 = (EditText) findViewById(R.id.et1);

et2.setOnTouchListener(this);
et2.setOnFocusChangeListener(this);
et1.setOnClickListener(this);
et2.setOnClickListener(this);
mLayout = (RelativeLayout) findViewById(R.id.xK1);
mKLayout = (RelativeLayout) findViewById(R.id.xKeyBoard);

}catch (Exception e)
{
e.printStackTrace();
}

}

private void setFrow() {
w = (mWindowWidth / 13);
w = w - 15;
mB[16].setWidth(w);
mB[22].setWidth(w + 3);
mB[4].setWidth(w);
mB[17].setWidth(w);
mB[19].setWidth(w);
mB[24].setWidth(w);
mB[20].setWidth(w);
mB[8].setWidth(w);
mB[14].setWidth(w);
mB[15].setWidth(w);
mB[16].setHeight(50);
mB[22].setHeight(50);
mB[4].setHeight(50);
mB[17].setHeight(50);
mB[19].setHeight(50);
mB[24].setHeight(50);
mB[20].setHeight(50);
mB[8].setHeight(50);
mB[14].setHeight(50);
mB[15].setHeight(50);

}

private void setTrow() {
w = (mWindowWidth / 12);
mB[25].setWidth(w);
mB[23].setWidth(w);
mB[2].setWidth(w);
mB[21].setWidth(w);
mB[1].setWidth(w);
mB[13].setWidth(w);
mB[12].setWidth(w);
mB[27].setWidth(w);
mB[28].setWidth(w);
mBack.setWidth(w);

mB[25].setHeight(50);
mB[23].setHeight(50);
mB[2].setHeight(50);
mB[21].setHeight(50);
mB[1].setHeight(50);
mB[13].setHeight(50);
mB[12].setHeight(50);
mB[27].setHeight(50);
mB[28].setHeight(50);
mBack.setHeight(50);

}

private void setSrow() {
w = (mWindowWidth / 10);
mB[0].setWidth(w);
mB[18].setWidth(w);
mB[3].setWidth(w);
mB[5].setWidth(w);
mB[6].setWidth(w);
mB[7].setWidth(w);
mB[26].setWidth(w);
mB[9].setWidth(w);
mB[10].setWidth(w);
mB[11].setWidth(w);
mB[26].setWidth(w);

mB[0].setHeight(50);
mB[18].setHeight(50);
mB[3].setHeight(50);
mB[5].setHeight(50);
mB[6].setHeight(50);
mB[7].setHeight(50);
mB[9].setHeight(50);
mB[10].setHeight(50);
mB[11].setHeight(50);
mB[26].setHeight(50);
}

private void setForow() {
w = (mWindowWidth / 10);
mBSpace.setWidth(w * 4);
mBSpace.setHeight(50);
mB[29].setWidth(w);
mB[29].setHeight(50);

mB[30].setWidth(w);
mB[30].setHeight(50);

mB[31].setHeight(50);
mB[31].setWidth(w);
mBdone.setWidth(w + (w / 1));
mBdone.setHeight(50);

}

private void setKeys() {
// TODO Auto-generated method stub
mWindowWidth=getWindowManager().getDefaultDisplay().getWidth();
mB[0]=(Button)findViewById(R.id.xA);
mB[1]=(Button)findViewById(R.id.xB);
mB[2]=(Button)findViewById(R.id.xC);
mB[3]=(Button)findViewById(R.id.xD);
mB[4]=(Button)findViewById(R.id.xE);
mB[5]=(Button)findViewById(R.id.xF);
mB[6]=(Button)findViewById(R.id.xG);
mB[7]=(Button)findViewById(R.id.xH);
mB[8]=(Button)findViewById(R.id.xI);
mB[9]=(Button)findViewById(R.id.xJ);
mB[10]=(Button)findViewById(R.id.xK);
mB[11]=(Button)findViewById(R.id.xL);
mB[12]=(Button)findViewById(R.id.xM);
mB[13]=(Button)findViewById(R.id.xN);
mB[14]=(Button)findViewById(R.id.xO);
mB[15]=(Button)findViewById(R.id.xP);
mB[16]=(Button)findViewById(R.id.xQ);
mB[17]=(Button)findViewById(R.id.xR);
mB[18]=(Button)findViewById(R.id.xS);
mB[19]=(Button)findViewById(R.id.xT);
mB[20]=(Button)findViewById(R.id.xU);
mB[21]=(Button)findViewById(R.id.xV);
mB[22]=(Button)findViewById(R.id.xW);
mB[23]=(Button)findViewById(R.id.xX);
mB[24]=(Button)findViewById(R.id.xY);
mB[25]=(Button)findViewById(R.id.xZ);
mB[26]=(Button)findViewById(R.id.xS1);
mB[27]=(Button)findViewById(R.id.xS2);
mB[28]=(Button)findViewById(R.id.xS3);
mB[29]=(Button)findViewById(R.id.xS4);
mB[30]=(Button)findViewById(R.id.xS5);
mB[31]=(Button)findViewById(R.id.xS6);
mBSpace=(Button)findViewById(R.id.xSpace);
mBdone=(Button)findViewById(R.id.xDone);
mBChange=(Button)findViewById(R.id.xChange);
mBack=(Button)findViewById(R.id.xBack);
mNum=(Button)findViewById(R.id.xNum);
for(int i=0;i<mB.length;i++)
mB[i].setOnClickListener(this);
mBSpace.setOnClickListener(this);
mBdone.setOnClickListener(this);
mBack.setOnClickListener(this);
mBChange.setOnClickListener(this);
mNum.setOnClickListener(this);

}

@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
if(v==et1)
{
hideDefaultKeyboard();
enableKeyboard();

}
if(v==et2)
{
hideDefaultKeyboard();
enableKeyboard();
}
return true;
}

private void enableKeyboard() {
// TODO Auto-generated method stub
mLayout.setVisibility(RelativeLayout.VISIBLE);
mKLayout.setVisibility(RelativeLayout.VISIBLE);

}

private void hideDefaultKeyboard() {
// TODO Auto-generated method stub
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v==mBChange)
{
if(mBChange.getTag().equals(mUpper))
{
changeSmallLetters();
changeSmallTags();

}
else if(mBChange.getTag().equals(mLower))
{
changeCapitalLetters();
changeCaptialTags();
}
}else if(v!=mBdone && v!=mBack && v!=mBChange && v!=mNum)
{
addText(v);
}else if(v==mBdone)
{
disableKeyboard();
}else if(v==mBack)
{
isBack(v);
}else if(v==mNum)
{
String tag=(String)mNum.getTag();
if(tag.equals("num"))
{
changeSyNuLetters();
changeSyNuTags();
mBChange.setVisibility(Button.INVISIBLE);
}
if(tag.equals("ABC"))
{
changeCapitalLetters();
changeCaptialTags();
}
}

}

private void disableKeyboard() {
// TODO Auto-generated method stub
mLayout.setVisibility(RelativeLayout.INVISIBLE);
mKLayout.setVisibility(RelativeLayout.INVISIBLE);

}

private void changeSyNuTags() {
// TODO Auto-generated method stub
for(int i=0;i<nS.length;i++)
mB[i].setTag(sL[i]);
mNum.setTag("ABC");

}

private void changeSyNuLetters() {
// TODO Auto-generated method stub
for(int i=0;i<nS.length;i++)
mB[i].setText(nS[i]);
mNum.setTag("ABC");

}

private void changeCaptialTags() {
// TODO Auto-generated method stub
for(int i=0;i<cL.length;i++)
mB[i].setTag(cL[i]);
//mBChange.setTag("upper");
mNum.setText("num");

}

private void changeCapitalLetters() {
// TODO Auto-generated method stub
mBChange.setVisibility(Button.VISIBLE);
for(int i=0;i<cL.length;i++)
mB[i].setText(cL[i]);
mBChange.setTag("upper");
mNum.setTag("12#");
}

private void changeSmallTags() {
// TODO Auto-generated method stub
for(int i=0;i<sL.length;i++)
mB[i].setTag(sL[i]);
mBChange.setTag("lower");
mNum.setTag("num");

}

private void changeSmallLetters() {
// TODO Auto-generated method stub
mBChange.setVisibility(Button.VISIBLE);
for(int i=0;i<sL.length;i++)
mB[i].setText(sL[i]);
mNum.setTag("12#");

}

private void isBack(View v) {
// TODO Auto-generated method stub
if(isEdit==true)
{
CharSequence cc=et1.getText();
if(cc!=null && cc.length()>0)
{
et1.setText("");
et1.append(cc.subSequence(0, cc.length()-1));
}
}
if(isEdit1==false)
{
CharSequence cc=et2.getText();
if(cc!=null && cc.length()>0)
{
et2.setText("");
et2.append(cc.subSequence(0, cc.length()-1));
}
}

}

private void addText(View v) {
// TODO Auto-generated method stub
if(isEdit==true)
{
String b;
b=(String)v.getTag();
if(b!=null)
{
et1.append(b);
}
}
if(isEdit1==true)
{
String c;
c=(String)v.getTag();
if(c!=null)
{
et2.append(c);
}
}

}

@Override
public void onFocusChange(View v, boolean hasFocus) {
if (v == et1 && hasFocus == true) {
isEdit = true;
isEdit1 = false;

} else if (v == et2 && hasFocus == true) {
isEdit = false;
isEdit1 = true;

}

}
}

Android And its Version

2012-03-07T19:48:00.002+05:30

What Is Android?
Android is a mobile operating system that is based on a modified version of Linux. It was originally
developed by a startup of the same name, Android, Inc. In 2005, as part of its strategy to enter the
mobile space, Google purchased Android and took over its development work (as well as its development
team).
Google wanted Android to be open and free; hence, most of the Android code was released under
the open-source Apache License, which means that anyone who wants to use Android can do so by
downloading the full Android source code. Moreover, vendors (typically hardware manufacturers)
can add their own proprietary extensions to Android and customize Android to differentiate their
products from others. This simple development model makes Android very attractive and has thus
piqued the interest of many vendors. This has been especially true for companies affected by the phenomenon
of Apple’s iPhone, a hugely successful product that revolutionized the smartphone industry.
Such companies include Motorola and Sony Ericsson, which for many years have been developing
their own mobile operating systems. When the iPhone was launched, many of these manufacturers
had to scramble to find new ways of revitalizing their products. These manufacturers see Android as
a solution — they will continue to design their own hardware and use Android as the operating system
that powers it.
The main advantage of adopting Android is that it offers a unified approach to application development.
Developers need only develop for Android, and their applications should be able to run on numerous
different devices, as long as the devices are powered using Android. In the world of smartphones, applications
are the most important part of the success chain. Device manufacturers therefore see Android
as their best hope to challenge the onslaught of the iPhone, which already commands a large base of
applications.
Android Versions
Android has gone through quite a number of updates since its first release. Table 1-1 shows the various
versions of Android and their codenames.
Tab le 1-1: A Brief History of Android Versions
Android Version Releas e Da te Codename
1.1 9 February 2009
1.5 30 April 2009 Cupcake
1.6 15 September 2009 Donut
2.0/2.1 26 October 2009 Eclair
2.2 20 May 2010 Froyo
2.3 6 December 2010 Gingerbread
3.0 Unconfirmed at the time of writing Honeycomb

Features of Android

2012-03-07T19:45:00.000+05:30

As Android is open source and freely available to manufacturers for customization, there are no fixed
hardware and software configurations. However, Android itself supports the following features:
➤➤ Storage — Uses SQLite, a lightweight relational database, for data storage. Chapter 6 discusses
data storage in more detail.
➤➤ Connectivity — Supports GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth (includes
A2DP and AVRCP), WiFi, LTE, and WiMAX. Chapter 8 discusses networking in more detail.
➤➤ Messaging — Supports both SMS and MMS. Chapter 8 discusses messaging in more detail.
➤➤ Web browser — Based on the open-source WebKit, together with Chrome’s V8 JavaScript engine
➤➤ Media support — Includes support for the following media: H.263, H.264 (in 3GP or MP4
container), MPEG-4 SP, AMR, AMR-WB (in 3GP container), AAC, HE-AAC (in MP4 or
3GP container), MP3, MIDI, Ogg Vorbis, WAV, JPEG, PNG, GIF, and BMP
➤➤ Hardware support — Accelerometer Sensor, Camera, Digital Compass, Proximity Sensor,
and GPS
➤➤ Multi-touch — Supports multi-touch screens
➤➤ Multi-tasking — Supports multi-tasking applications
➤➤ Flash support — Android 2.3 supports Flash 10.1.
➤➤ Tethering — Supports sharing of Internet connections as a wired/wireless hotspot

Animation in android

2012-02-29T15:06:00.003+05:30

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class AnimationEx extends Activity {
/** Called when the activity is first created. */

Button b1;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b1=(Button)findViewById(R.id.button1);
b1.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
parentButtonClicked(v);
/*ImageView img=(ImageView)findViewById(R.id.imageView1);
img.setBackgroundResource(R.drawable.ani);
AnimationDrawable ad=(AnimationDrawable)img.getBackground();
*/

}

});
}
private void parentButtonClicked(View v)
{
animate();
}
private void animate()
{
ImageView img=(ImageView)findViewById(R.id.imageView1);
img.setBackgroundResource(R.drawable.ani);
AnimationDrawable ad=(AnimationDrawable)img.getBackground();
if(ad.isRunning())
{
ad.stop();
b1.setText("start");
}
else
{
ad.start();
b1.setText("stop");
}

}
}

anim.xml in drawable folder in same folder were your picture or snaps are kept

<animation-list
xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item
android:drawable="@drawable/icon"
android:duration="550" />
<item
android:drawable="@drawable/anim"
android:duration="550" />
<item
android:drawable="@drawable/cute"
android:duration="550"></item>
<item
android:drawable="@drawable/dolphin"
android:duration="550"></item>
<item
android:drawable="@drawable/man"
android:duration="550"></item>
</animation-list>

Sms via Intent

2012-02-27T17:08:00.001+05:30

ProgressBar

2012-02-27T17:06:00.003+05:30

import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class ProgressBar extends Activity {

//String items[]={"Googel","Appel","MacBook"};
//boolean[] itemchecked= new boolean[items.length];
/*ProgressThread progthread;
ProgressThread progThread;
*/
ProgressDialog progressdialog;
int progress=0;
Handler progresshandler;
Button b1;
Dialog dialog;
static int maxBarValue = 200;
//ProgressThread progressthread;
//protected Message Message;
/** Called when the activity is first created. */

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
progresshandler=new Handler()
{
public void handleMessage(Message msg)
{
super.handleMessage(msg);
if (progress >= 100) {
Toast.makeText(getApplicationContext(),"Sucess!!", Toast.LENGTH_LONG).show();
progressdialog.dismiss();
} else {
progress++;
progressdialog.incrementProgressBy(1);
progresshandler.sendEmptyMessageDelayed(0, 100);
}
}

};

progressdialog=new ProgressDialog(this);
progressdialog.setTitle("Downloading files");
progressdialog.setProgressStyle(progressdialog.STYLE_HORIZONTAL);
progressdialog.setButton(DialogInterface.BUTTON_POSITIVE,"Hide",new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(),"Hide Clicked!!",Toast.LENGTH_LONG).show();
}
});
progressdialog.setButton(DialogInterface.BUTTON_NEGATIVE,"Cancel Clicked!!",new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(),"Cancel Clicked!!",Toast.LENGTH_LONG).show();

}
});

b1=(Button)findViewById(R.id.button1);
b1.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v) {
progressdialog.show();
progress=0;
/*Thread t=new Thread();
t.start();*/
ProgressThread progressthread=new ProgressThread(progresshandler);
progressthread.start();

progressdialog.setProgress(0);
progresshandler.sendEmptyMessage(0);
}

});

}
}

class ProgressThread extends Thread
{

final static int DONE = 0;
final static int RUNNING = 1;

Handler mHandler;
int mState;
int total;
ProgressThread(Handler m)
{
mHandler=m;
}
public void run() {
mState = RUNNING;
total = ProgressBar.maxBarValue;
while (mState == RUNNING) {

try {
// Control speed of update (but precision of delay not guaranteed)
Thread.sleep(40);

} catch (InterruptedException e) {
e.printStackTrace();
}

total--;

}}}

MediaPlayer with Visualization And Equalizer

2012-02-27T17:06:00.000+05:30

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.audiofx.Equalizer;
import android.media.audiofx.Visualizer;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.VideoView;

public class MediaDemo extends Activity {
/** Called when the activity is first created. */

private static final String TAG = "AudioFxDemo";

private static final float VISUALIZER_HEIGHT_DIP = 50f;

private MediaPlayer mp;
private Visualizer mVisualizer;
private Equalizer mEqualizer;

private LinearLayout ll;
private VideoView vv;
private VisualizerView mVisualizerView;
private TextView tv;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
tv=new TextView(this);
vv=new VideoView(this);
ll=new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
ll.addView(tv);
setContentView(ll);
mp=MediaPlayer.create(getApplicationContext(), R.raw.jan);
Log.d(TAG, "MediaPlayer audio session ID: " + mp.getAudioSessionId());

setupVisualizer();
setupEqualizer();
mVisualizer.setEnabled(true);
mp.setOnCompletionListener(new OnCompletionListener()
{

@Override
public void onCompletion(MediaPlayer arg0) {
// TODO Auto-generated method stub
mVisualizer.setEnabled(false);

}

});
mp.start();
tv.setText("playing audio");
}
public void setupEqualizer()
{
mEqualizer=new Equalizer(0,mp.getAudioSessionId());
mEqualizer.setEnabled(true);
TextView tv=new TextView(this);
tv.setText("equalizer");
ll.addView(tv);
short bands=mEqualizer.getNumberOfBands();
final short min=mEqualizer.getBandLevelRange()[0];
final short max=mEqualizer.getBandLevelRange()[1];
for(short i=0;i<bands;i++)
{
final short band=1;
TextView tv1=new TextView(this);
tv1.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT));
tv1.setGravity(Gravity.CENTER_HORIZONTAL);
tv1.setText((mEqualizer.getCenterFreq(band)/1000)+"hz");
ll.addView(tv1);
LinearLayout lv=new LinearLayout(this);
lv.setOrientation(LinearLayout.HORIZONTAL);
//TextView tv2=new TextView(this);
//tv2.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT));
//tv2.setText((min/100)+"db");
//TextView tv3=new TextView(this);
//tv3.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT));
//tv3.setText((max/100)+"db");
LinearLayout.LayoutParams param=new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
param.weight=1;
SeekBar bar=new SeekBar(this);
bar.setLayoutParams(param);
bar.setMax(max-min);
bar.setProgress(mEqualizer.getBandLevel(band));
bar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub

}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub

}

@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
mEqualizer.setBandLevel(band, (short)(progress+min));

}
});
//lv.addView(tv2);
//lv.addView(tv3);
lv.addView(bar);
ll.addView(lv);
}

}
public void setupVisualizer()
{
mVisualizerView=new VisualizerView(this);
mVisualizerView.setLayoutParams(new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
(int)(VISUALIZER_HEIGHT_DIP * getResources().getDisplayMetrics().density)));
/*vv.getBackground();
ll.addView(vv);*/
ll.addView(mVisualizerView);

mVisualizer=new Visualizer(mp.getAudioSessionId());

mVisualizer.setCaptureSize(Visualizer.getCaptureSizeRange()[1]);
mVisualizer.setDataCaptureListener(new Visualizer.OnDataCaptureListener() {

@Override
public void onWaveFormDataCapture(Visualizer visualizer, byte[] bytes,
int samplingRate) {
// TODO Auto-generated method stub
mVisualizerView.updateVisualizer(bytes);

}

@Override
public void onFftDataCapture(Visualizer visualizer, byte[] fft,
int samplingRate) {
// TODO Auto-generated method stub

}
}, Visualizer.getMaxCaptureRate()/2, true,false);

}
protected void onPause() {
super.onPause();

if (isFinishing() && mp != null) {
mVisualizer.release();
mEqualizer.release();
mp.release();
mp = null;
}
}
}
class VisualizerView extends View {
private byte[] mBytes;
private float[] mPoints;
private Rect mRect = new Rect();

private Paint mForePaint = new Paint();

public VisualizerView(Context context) {
super(context);
init();
}

private void init() {
mBytes = null;

mForePaint.setStrokeWidth(1f);
mForePaint.setAntiAlias(true);
mForePaint.setColor(Color.rgb(0, 128, 255));
}

public void updateVisualizer(byte[] bytes) {
mBytes = bytes;
invalidate();
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);

if (mBytes == null) {
return;
}

if (mPoints == null || mPoints.length < mBytes.length * 4) {
mPoints = new float[mBytes.length * 4];
}

mRect.set(0, 0, getWidth(), getHeight());

for (int i = 0; i < mBytes.length - 1; i++) {
mPoints[i * 4] = mRect.width() * i / (mBytes.length - 1);
mPoints[i * 4 + 1] = mRect.height() / 2
+ ((byte) (mBytes[i] + 128)) * (mRect.height() / 2) / 128;
mPoints[i * 4 + 2] = mRect.width() * (i + 1) / (mBytes.length - 1);
mPoints[i * 4 + 3] = mRect.height() / 2
+ ((byte) (mBytes[i + 1] + 128)) * (mRect.height() / 2) / 128;
}

canvas.drawLines(mPoints, mForePaint);
}
}

ListView

2012-02-27T17:04:00.005+05:30

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class ListEx extends ListActivity {
/** Called when the activity is first created. */

String s[];
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.main);
ListView l1=getListView();
s=getResources().getStringArray(R.array.s);

l1.setChoiceMode(2);
l1.setTextFilterEnabled(true);
setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_expandable_list_item_1,s));

}
public void onListItemClick(ListView parent, View v, int position, long id)
{
parent.setItemChecked(position,parent.isItemChecked(position));
Toast.makeText(this,"you have selected" +":"+ s[position],
Toast.LENGTH_SHORT).show();
}
}

Intent with its different use

2012-02-27T17:04:00.002+05:30

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class Example extends Activity {
/** Called when the activity is first created. */

Button b1,b2,b3,b4;
int requestcode=1;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b1=(Button)findViewById(R.id.button1);

b1.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i=new Intent(android.content.Intent.ACTION_VIEW,Uri.parse("http://www.google.com"));
startActivity(i);

}

});
b2=(Button)findViewById(R.id.button2);
b2.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i1=new Intent(android.content.Intent.ACTION_DIAL,Uri.parse("tel:+8095880668"));
startActivity(i1);

}

});
b3=(Button)findViewById(R.id.button3);
b3.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

Intent i2 = new Intent(android.content.Intent.ACTION_VIEW,Uri.parse("geo:37.827500,-122.481670"));
startActivity(i2);
}

});
b4=(Button)findViewById(R.id.button4);
b4.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i3=new Intent(android.content.Intent.ACTION_PICK);
i3.setType(ContactsContract.Contacts.CONTENT_TYPE);
startActivityForResult(i3,requestcode);
}

});
}
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == requestcode)
{
if (resultCode == RESULT_OK)
{
Toast.makeText(this,data.getData().toString(),
Toast.LENGTH_SHORT).show();
Intent i = new Intent(
android.content.Intent.ACTION_VIEW,
Uri.parse(data.getData().toString()));
startActivity(i);
}
}
}
}

Insert Image to DataBase and show in Image view

2012-02-27T13:55:00.001+05:30

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

public class DBAdapter {
public static final String id = "id";
public static final String data = "image";
public static final String databasename="dbex";
public static final String tablename="login";
private static final int dbversion=1;
private static final String create="create table login(id integer primary key autoincrement,image blob);";
public static final String[] PROJECTION_ALL = new String[] {
id,data};
private SQLiteDatabase db;
private DbHelper helper;
private final Context context;
//byte[] image;
public DBAdapter(Context con)
{
this.context=con;
helper=new DbHelper(context);
}
public class DbHelper extends SQLiteOpenHelper
{

public DbHelper(Context context) {
super(context, databasename, null, dbversion);
// TODO Auto-generated constructor stub
}

@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL(create);

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
Log.w("Login DB","upgrading database from"+oldVersion+"to"+newVersion+"which destroy all data");
if(oldVersion==1)
{
db.execSQL("DROP TABLE IF EXIST LOGIN ");
}

onCreate(db);

}

}
public DBAdapter open()throws SQLException
{
db=helper.getWritableDatabase();
return this;
}
public void close()
{
helper.close();
}
public long insert(byte[] image1)
{
ContentValues cv=new ContentValues();
cv.put(data, image1);
return db.insert(tablename, null, cv);
}
public Cursor fetchAll()
{
Cursor c=db.rawQuery("SELECT image FROM LOGIN" , null);
return c;
/*Cursor c=db.query(tablename, PROJECTION_ALL,null, null,null,null,null);
byte[] image=null;
if(c.getCount()>0)
{
c.moveToNext();
image=c.getBlob(c.getColumnIndex(data));
return image;
}
else
{
return null;

}*/

}
public byte[] fetchSingle(int id1)
{
Cursor c=db.query(tablename, PROJECTION_ALL, id+"="+id1, null,null,null,null);
if(c==null)
{
return null;
}
byte[] image=null;
if(c.moveToFirst())
{
image=c.getBlob(c.getColumnIndexOrThrow(data));
}
c.close();
return image;
}
}

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class Dbimage extends Activity {

/** Called when the activity is first created. */

Button b1;

DBAdapter db;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

b1=(Button)findViewById(R.id.button1);

b1.setOnClickListener(new OnClickListener()

{

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

Intent i=new Intent(getApplicationContext(),Show.class);

startActivity(i);

}

});

import java.util.ArrayList;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.graphics.BitmapFactory;

import android.os.Bundle;

import android.view.Display;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.BaseAdapter;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.AdapterView.OnItemClickListener;

public class Show extends Activity{

//Integer i[]={R.drawable.cute,R.drawable.icon,R.drawable.dolphin};

ArrayList<byte[]> a;

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.show);

DBAdapter db=new DBAdapter(this);

//ImageView im=(ImageView)findViewById(R.id.imageView1);

///

db.open();

byte[] img=Utilities.getBytes(BitmapFactory.decodeResource(getResources(), R.drawable.dolphin));

byte[] img1=Utilities.getBytes(BitmapFactory.decodeResource(getResources(), R.drawable.cute));

db.insert(img);

db.insert(img1);

byte[] b=db.fetchSingle(1);

im.setImageBitmap(Utilities.getImage(b));*/

Cursor c=db.fetchAll();

System.out.println("The Lenght of the Cursor:::::::::::::::::::::::::::::::::"+c.getCount());

a=new ArrayList<byte[]>(c.getCount());

c.moveToFirst();

while(!c.isAfterLast())

{

final byte[] b=db.fetchSingle(c.getPosition()+1);

//ByteArrayInputStream input=new ByteArrayInputStream(b);

//Bitmap map=BitmapFactory.decodeStream(input);

//c.getBlob(c.getColumnIndex("data"));

a.add(b);

GridView gal=(GridView)findViewById(R.id.gridView1);

gal.setAdapter(new ShowAdapter(this, a));

c.moveToNext();

gal.setOnItemClickListener(new OnItemClickListener()

{

@Override

public void onItemClick(AdapterView<?> arg0, View arg1,

int arg2, long arg3) {

// TODO Auto-generated method stub

Intent i=new Intent(getApplicationContext(),Display1.class);

i.putExtra("image", b);

Bundle b=new Bundle();

b.putInt("position",arg2);

i.putExtras(b);

startActivity(i);

}

});

}

// db.insert(img1);

//byte[] b=db.fetchAll();

//im.setImageBitmap(Utilities.getImage(img1));

//im.setImageBitmap(Utilities.getImage(img));

db.close();

//gal.setAdapter(new ShowAdapter(this));

//db=new DBAdapter(this);

// byte[] b=db.fetchSingle(1);

//img1.setImageBitmap(Utilities.getImage(img));

}

class ShowAdapter extends BaseAdapter{

Context c;

ArrayList<byte[]> a;

ShowAdapter(Context con,ArrayList<byte[]> a){

c=con;

this.a=a;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return a.size();

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return position;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return position;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

// TODO Auto-generated method stub

//LinearLayout ll=new LinearLayout(c);

/*GridView gal=new GridView(c);

gal.setBackgroundResource(R.drawable.cute);

ll.addView(gal);*/

ImageView img;

if(convertView==null)

{

img=new ImageView(c);

img.setLayoutParams(new GridView.LayoutParams(50,50));

img.setPadding(3, 3, 3, 3);

}

else

{

img=(ImageView)convertView;

}

img.setImageBitmap(Utilities.getImage(a.get(position)));

return img;

//return ll;

}

Utility.java

import java.io.ByteArrayOutputStream;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Bitmap.CompressFormat;

public class Utilities {

public static byte[] getBytes(Bitmap bitmap)

{

ByteArrayOutputStream stream=new ByteArrayOutputStream();

bitmap.compress(CompressFormat.JPEG,0, stream);

return stream.toByteArray();

}

public static Bitmap getImage(byte[] image)

{

return BitmapFactory.decodeByteArray(image, 0, image.length);

}

Display.java

import android.app.Activity;

import android.os.Bundle;

import android.widget.ImageView;

public class Display1 extends Activity {

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.show1);

Bundle b1=new Bundle();

int i=b1.getInt("position");

byte b[]=getIntent().getByteArrayExtra("image");

ImageView im=(ImageView)findViewById(R.id.imageView1);

im.setImageBitmap(Utilities.getImage(b));

}

Gridview

2012-02-27T13:53:00.000+05:30

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class GridViewEx extends Activity {
/** Called when the activity is first created. */

Button b1;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b1=(Button)findViewById(R.id.button1);
b1.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i=new Intent(getApplicationContext(),GridView1.class);
startActivity(i);

}

});
}
}
GridView.java

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class GridView1 extends Activity {
GridView g;
ImageView im;
static int i[]={R.drawable.cute,R.drawable.crane,R.drawable.watch,R.drawable.coffee,R.drawable.add,
R.drawable.aa};

public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
g=(GridView)findViewById(R.id.gridview1);
//im=(ImageView)findViewById(R.id.imageView1);
g.setAdapter(new ShowAdapter(this));
g.setOnItemClickListener(new OnItemClickListener()
{

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
//showImage(arg1,arg2);
//Toast.makeText(getApplicationContext(),"you have selected pic",Toast.LENGTH_LONG).show();
Intent i1=new Intent(getApplicationContext(),Show.class);
//i1.putExtra("image",R.drawable.cute);
i1.putExtra("image",i);
//i1.putExtra("position",arg2);
Bundle b=new Bundle();
b.putInt("position",arg2);
i1.putExtras(b);
startActivity(i1);
/*Bundle bundle = new Bundle();
bundle.putInt("image", i[arg2]);
i1.putExtras(bundle);
startActivityForResult(i1, 0);*/
//im.setImageResource(i[arg2]);
}

});
}
/*public void showImage(View v,int position)
{
ImageView img=(ImageView)v;
img.setImageResource(i[position]);

}*/
public class ShowAdapter extends BaseAdapter
{
Context c;
public ShowAdapter(Context con)
{
c=con;

}

@Override
public int getCount() {
// TODO Auto-generated method stub
return i.length;
}

@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView img;
if(convertView==null)
{
img=new ImageView(c);
img.setLayoutParams(new GridView.LayoutParams(85,85));
img.setPadding(5, 5, 5, 5);

}
else
{
img=(ImageView)convertView;
}
img.setImageResource(i[position]);
return img;
}

}

}

import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;

public class Show extends Activity{
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);

int i1[]=getIntent().getIntArrayExtra("image");

Bundle b=new Bundle();
b=getIntent().getExtras();
int i=b.getInt("position");

ImageView i2=(ImageView)findViewById(R.id.imageView2);
i2.setImageResource(i1[i]);

}

}

GalleryImgSwitcher

2012-02-27T13:51:00.001+05:30

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Gallery2 extends Activity {
/** Called when the activity is first created. */

Button b1;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b1=(Button)findViewById(R.id.button1);
b1.setOnClickListener(new OnClickListener()
{

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i=new Intent(getApplicationContext(),Gallerynew.class);
startActivity(i);

}

});
}
}
Gallery.java

import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ViewSwitcher.ViewFactory;

public class Gallerynew extends Activity implements ViewFactory{
Gallery g;
Integer i[]={R.drawable.crane,R.drawable.face,R.drawable.watch};
ImageSwitcher img;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
img=(ImageSwitcher)findViewById(R.id.imageSwitcher1);
img.setFactory(this);
img.setInAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_in));
img.setOutAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_out));
g=(Gallery)findViewById(R.id.gallery);
g.setAdapter(new ImageAdapter(this));
g.setOnItemClickListener(new OnItemClickListener()
{

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(),"you selected"+(arg2+1)+"picture",Toast.LENGTH_LONG).show();
img.setImageResource(i[arg2]);
}

});

}
public View makeView() {
// TODO Auto-generated method stub
ImageView im=new ImageView(this);
im.setBackgroundColor(0xFF000000);
im.setScaleType(ImageView.ScaleType.FIT_XY);
im.setLayoutParams(new
ImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
return im;
}
public class ImageAdapter extends BaseAdapter
{
Context c;
int itembackground;
public ImageAdapter(Context con)
{
c=con;
TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
itembackground = a.getResourceId(
R.styleable.Gallery1_android_galleryItemBackground, 0);
a.recycle();
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return i.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView img=new ImageView(c);
img.setImageResource(i[position]);
img.setLayoutParams(new Gallery.LayoutParams(150,120));
img.setBackgroundResource(itembackground);
return img;
}

}

}