Android Beginning Bunch

CoroutineScope : Android

2024-11-20T17:29:00.003+05:30

CoroutineScope : Android

Lifescycle scope

Global Scope

ViewmodelScope (Custom Scope )

Lifescycle scope

Use lifecycle-aware scopes like lifecycleScope or viewLifecycleOwner.lifecycleScope provided by Jetpack's Lifecycle library to automatically manage coroutine lifecycles.

Global Scope

Global scope alive till application running

Viewmodel Scope

Viewmodel scope will alive till activity or fragment

can able to use multiple fragment or activity.

What are Scope functions in kotlin?

2024-11-12T10:51:00.000+05:30

Below example for list scope function in kotlin

let
run
with
apply
also

let

The basic functionality of all the scope functions is the same i.e. to execute a block of code on an object.

Android - The Crashlytics build ID is missing.

2023-04-29T13:20:00.002+05:30

Android - The Crashlytics build ID is missing.

When i integrate Firebase Crashlytics getting following error .

The Crashlytics build ID is missing

kindly add following lines in string.xml

<string name="com.crashlytics.android.build_id">1</string>

Android : Could not find com.twitter.sdk.android:twitter-core:3.1.1

2023-03-21T14:05:00.001+05:30

While integrate Twitter signup integration in android . I'm getting following error

Execution failed for task ':app:mergeDebugNativeLibs'.

> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.

> Could not find com.twitter.sdk.android:twitter-core:3.1.1.

Searched in the following locations:

- https://dl.google.com/dl/android/maven2/com/twitter/sdk/android/twitter-core/3.1.1/twitter-core-3.1.1.pom

- https://repo.maven.apache.org/maven2/com/twitter/sdk/android/twitter-core/3.1.1/twitter-core-3.1.1.pom

Required by:

project : app

Error

Solution

Add following line in setting.gradle file

pluginManagement {
    repositories {
        maven {
            url ("https://github.com/jitsi/jitsi-maven-repository/raw/master/releases")
        }
        maven{
            url("https://jcenter.bintray.com")
        }

        maven { url 'https://jitpack.io' }

        gradlePluginPortal()
        google()
        mavenCentral()

    }
}
dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {

        maven {
            url ("https://github.com/jitsi/jitsi-maven-repository/raw/master/releases")
        }
        google()
        mavenCentral()

        maven{
            url("https://jcenter.bintray.com")
        }

        maven { url 'https://jitpack.io' }
    }
}

Android : Jitsi starts dialing up call out a phone number with room id some android devices

2022-12-03T12:19:00.005+05:30

Android : Jitsi starts dialing up call out a phone number with room id some android devices

Solution

Make call-integration.enabled false

options

= new JitsiMeetConferenceOptions.Builder()

.setRoom(roomID)

.setServerURL(domainURl)

.setConfigOverride("requireDisplayName", true)

.setFeatureFlag("call-integration.enabled", false)

Data Binding is not working after we change the package name...? Android Studio

2022-11-29T14:45:00.000+05:30

Data Binding is not working after we change the package name...?Android Studio

Solution:

1. Build > Clean Project

2.Go to your Build.gradle (Module) and disable databinding:

android {

buildFeatures {

viewBinding false

}

3.File > Sync Project with Gradle Files

4.Build > Rebuild Project ,Now enable databinding again:

android {

buildFeatures {

viewBinding true

}

5.File > Sync Project with Gradle Files

When enable setPersistenceEnabled(true). Firebase Realtime Database retrieving old data ?

2022-11-23T11:53:00.003+05:30

When enable setPersistenceEnabled(true). Firebase Realtime Database retrieving old data ?

its showing old data. for that u have to add one more line.

FirebaseDatabase.getInstance().setPersistenceEnabled(true);
FirebaseDatabase.getInstance().getReference().keepSynced(true);

How to Update UserOnline Status Android Smack ?

2022-08-02T14:37:00.002+05:30

How to Update UserOnline Status Android Smack ?

Presence p = new Presence(Presence.Type.available, "" +mode, 42, Presence.Mode.away);
ConnectionManager.mConnection.sendStanza(p);

Duplicate class org.xmlpull.mxp1.MXParser found in modules xpp3-1.1.4c (xpp3:xpp3:1.1.4c) and xpp3_min-1.1.4c (xpp3:xpp3_min:1.1.4c)

2022-07-19T09:15:00.006+05:30

Duplicate class org.xmlpull.mxp1.MXParser found in modules xpp3-1.1.4c (xpp3:xpp3:1.1.4c) and xpp3_min-1.1.4c (xpp3:xpp3_min:1.1.4c)

Duplicate class org.xmlpull.v1.XmlPullParser found in modules xpp3-1.1.4c (xpp3:xpp3:1.1.4c) and xpp3_min-1.1.4c (xpp3:xpp3_min:1.1.4c)

Duplicate class org.xmlpull.v1.XmlPullParserException found in modules xpp3-1.1.4c (xpp3:xpp3:1.1.4c) and xpp3_min-1.1.4c (xpp3:xpp3_min:1.1.4c)

Solution

Add gradle

(here Your Project)

implementation ("org.igniterealtime.smack:smack-tcp:4.4.0")
/*  {
      exclude group: "xmlpull", module: "xmlpull"
      exclude module: 'xpp3'
  }

Android Smack Unfriend Request

2022-07-12T09:07:00.002+05:30

Android Smack Unfriend Request

public static void  sendFriendshipRequest(EntityBareJid toJid , String name, String stanzaID) throws SmackException.NotConnectedException, InterruptedException {
    Presence presence = new Presence(Presence.Type.unsubscribe);
    presence.setTo(toJid);
    presence.setFrom(fromJid);

    presence.setStanzaId(stanzaID);
    mConnection.sendStanza(presence);
    mConnection.addStanzaSendingListener(new StanzaListener() {
        @Override
        public void processStanza(Stanza packet) {
            Presence presence = (Presence) packet;
            Presence.Mode mode = presence.getMode();
           // Toast.makeText(act, "Un friend succefully  " +name, Toast.LENGTH_SHORT).show();
          
            if (mode == null) return;
            switch (mode) {
                case available:
                case chat:
                    // We assume that only a switch to available and chat indicates user activity
                    // since other mode changes could be also a result of some sort of automatism

                    break;
                default:
                    break;
            }
        }
    }, StanzaTypeFilter.PRESENCE);
}

Android SMACK get USER Online Status (Presence)

2022-07-09T13:00:00.003+05:30

Android SMACK get USER Online Status

public void getUserStatus(){
    {
        Presence presence;
        presence = roster.getPresence(jid);
            if (presence.getMode().name().equalsIgnoreCase("available")) {

            } else if (presence.getMode().name().equalsIgnoreCase("away")) {


            } else if(presence.getMode().name().equalsIgnoreCase("xa")){

            }
            else if(presence.getMode().name().equalsIgnoreCase("chat")){

            }
            else {
              //dnd
            }
        }

XMPP SMACK Connection android Test

2022-07-01T00:47:00.010+05:30

XMPP Connection android

package com.ttg.androidxmppsample;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.net.InetAddresses;
import android.os.Bundle;
import android.os.Handler;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import org.jivesoftware.smack.AbstractXMPPConnection;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.ConnectionListener;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
import org.jxmpp.jid.DomainBareJid;
import org.jxmpp.jid.impl.JidCreate;
import org.jxmpp.stringprep.XmppStringprepException;

import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.UnknownHostException;

public class MainActivity2 extends AppCompatActivity {
       String TAG = "ConnectXmpp";
       String DOMAIN = "localhost";
       String HOST = "10.11.227.130";
       int PORT = 5222;

    private String userName ="";
    private String passWord = "";

    public static boolean connected = false;
    public static boolean isToasted = true;
    public static boolean chat_created = true;
    // Chat newChat;
    XMPPConnectionListener connectionListener = new XMPPConnectionListener();


    public  AbstractXMPPConnection mConnection;
    public XMPPTCPConnectionConfiguration mConnectionConfiguration;

    private boolean startConnected = false;

    TextView connStatus ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitNetwork().build();
        StrictMode.setThreadPolicy(policy);
        Button btn  = findViewById(R.id.button);
        connStatus = findViewById(R.id.textView);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                try {
                    init("","");
                } catch (XmppStringprepException e) {
                    Log.i("dbXMPP", "XmppStringprepException!");
                    e.printStackTrace();
                }

               // startLogin("lx2rvktowng3","9739876646vV");

               // startLogin("","");
            }
        });

    }

    public void init(final String userName, final String passWord) throws XmppStringprepException {

        Log.i("dbXMPP", "Initializing!");
        //this.userName = userId;
        //this.passWord = pwd;
        XMPPTCPConnectionConfiguration.Builder configBuilder = XMPPTCPConnectionConfiguration.builder();
        configBuilder.setUsernameAndPassword(userName, passWord);
        configBuilder.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
        configBuilder.setResource("SomeResource");
       // DomainBareJid serviceName = JidCreate.domainBareFrom(DOMAIN);
       // configBuilder.setServiceName(serviceName);
       // configBuilder.setXmppDomain(serviceName);
        configBuilder .setXmppDomain("10.11.227.130");
       // configBuilder.setHost(HOST);
        configBuilder.setPort(PORT);

        configBuilder.allowEmptyOrNullUsernames();
        // connection = new XMPPTCPConnection(configBuilder.build());
        // connection.addConnectionListener(connectionListener);
        Log.i("dbXMPP", "Initializing! 1");
        AbstractXMPPConnection connection = new XMPPTCPConnection(configBuilder.build());
        connection.addConnectionListener(connectionListener);

        try {
            // mConnection.setReplyTimeout(10000);
            connection.connect();
            startConnected = true;
        } catch (Exception e) {
            e.printStackTrace();
            Log.e(TAG, " ***** + Connected" +e.getLocalizedMessage());
        }


        Log.i("dbXMPP", "Initializing!  2");
    }
    //  Connection Listener to check connection state
    public class XMPPConnectionListener implements ConnectionListener {
        @Override
        public void connected(@NonNull final XMPPConnection connection) {

            Log.i("dbXMPP", "Connected!");
            connected = true;
            connStatus.setText("Connected");
            connStatus.setTextColor(Color.GREEN);

            if (!connection.isAuthenticated()) {
              //  login();
            }


        }

        @Override
        public void authenticated(XMPPConnection xmppConnection, boolean b) {
            Log.i("dbXMPP", "authenticated!");
            connStatus.setText("Connected , authenticated");
            connStatus.setTextColor(Color.GREEN);

        }

        @Override
        public void connectionClosed() {
            Log.d("dbXMPP", "ERROR connectionClosed!");
          //  connStatus.setText("connectionClosed");
          //  connStatus.setTextColor(Color.RED);
        }

        @Override
        public void connectionClosedOnError(Exception e) {
          //  connStatus.setText("connectionClosedOnError");
           // connStatus.setTextColor(Color.RED);
            Log.d("dbXMPP", "ERROR connectionClosedOnError!");
        }


        private boolean loggedin = true;

        public void login() {

            try {

                XMPPLogic.connection.login(userName, passWord);
                //connection.login(userName, passWord);


            } catch (XMPPException | SmackException | IOException e) {
                e.printStackTrace();
            } catch (Exception e) {
                loggedin = false;
                chat_created = false;
            }

            if (!loggedin) {
                Log.e(TAG, "Unable to login");

              //  disconnect();
                loggedin = true;
            } else {


                Log.e(TAG, "Logged in");
            }

        }
    }



    /*
     * startLogin creates the connection for the log in process.
     * First, a connection to the server must be established. After the connection
     *   is established, then only can you process the login details.
     * */
    private void startLogin(final String username, final String password) {
/*
        new Handler().postDelayed(new Runnable() {
            public void run() {
                // do something...

                {
                    DomainBareJid serviceName = null;
                    InetAddress address = null;
                    try {
                        serviceName = JidCreate.domainBareFrom(DOMAIN);
                    } catch (XmppStringprepException e) {
                        e.printStackTrace();
                    }
                    try {
                        address=InetAddress.getByName(HOST);
                    } catch (UnknownHostException e) {
                        e.printStackTrace();
                    }

                    mConnectionConfiguration = XMPPTCPConnectionConfiguration.builder()
                            .setUsernameAndPassword(username, password) // The username and password supplied by the user
                            .setHostAddress(address)// Service name
                            .setXmppDomain(serviceName)
                            .setHost(HOST) // Server host name
                            .setPort(5222) // Incoming port (might depend on your XMPP server software)
                            .setSecurityMode(ConnectionConfiguration.SecurityMode.disabled) // Security mode is disabled for example purposes
                            .build();

                    mConnection = new XMPPTCPConnection(mConnectionConfiguration);

                    try {
                        mConnection.setReplyTimeout(10000);
                        mConnection.connect();
                        startConnected = true;
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                    // If the connection is successful, we begin the login process
                    if(startConnected) {
                        // connectionLogin();
                        Log.e(TAG, " ***** + Connected");
                    } else {
                        Log.e(TAG, "Unable to connect");
                    }
                }
            }
        }, 10000);
        */
        new Thread(new Runnable() {
            @Override
            public void run() {
                DomainBareJid serviceName = null;
                InetAddress address = null;
                try {
                    serviceName = JidCreate.domainBareFrom(DOMAIN);
                } catch (XmppStringprepException e) {
                    e.printStackTrace();
                }
                try {
                     address=InetAddress.getByName(HOST);
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }

                try {
                    mConnectionConfiguration = XMPPTCPConnectionConfiguration.builder()
                            .setUsernameAndPassword(username, password) // The username and password supplied by the user
                          .setResource("SomeResource")
                           // .setHostAddress(address)// Service name
                          //  .setXmppDomain("jabber.org")
                            .setXmppDomain("jabber.org")
                           // .setHost(HOST) // Server host name
                           .setPort(5222) // Incoming port (might depend on your XMPP server software)
                         //   .setSecurityMode(ConnectionConfiguration.SecurityMode.disabled) // Security mode is disabled for example purposes
                           .allowEmptyOrNullUsernames()
                            .build();
                } catch (XmppStringprepException e) {
                    e.printStackTrace();
                }

                mConnection = new XMPPTCPConnection(mConnectionConfiguration);

                try {
                   // mConnection.setReplyTimeout(10000);
                    mConnection.connect();
                    startConnected = true;
                } catch (Exception e) {
                    e.printStackTrace();
                    Log.e(TAG, " ***** + Connected" +e.getLocalizedMessage());
                }

                // If the connection is successful, we begin the login process
                if(startConnected) {
                   // connectionLogin();
                    Log.e(TAG, " ***** + Connected");
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            connStatus.setText("Connected");
                            connStatus.setTextColor(Color.GREEN);
                        }
                    });

                } else {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            connStatus.setText("Not Connected");
                            connStatus.setTextColor(Color.RED);
                        }
                    });
                    Log.e(TAG, "Unable to connect");

                }
            }
        }).start();
    }

}

implementation "org.igniterealtime.smack:smack-tcp:4.3.0"
// Optional for XMPPTCPConnection
implementation "org.igniterealtime.smack:smack-android-extensions:4.3.0"

implementation 'org.igniterealtime.smack:smack-android:4.3.0'

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_gravity="center"
    android:gravity="center"
    android:layout_height="match_parent"
    tools:context=".MainActivity2">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_marginTop="10dp"
        android:layout_height="wrap_content"
        android:text="Connect"
        tools:layout_editor_absoluteX="178dp"
        tools:layout_editor_absoluteY="217dp" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_marginTop="50dp"
        android:layout_height="wrap_content"
        android:textSize="20dp"
        android:maxLines="10"
        android:text="Connection Status"
        tools:layout_editor_absoluteX="166dp"
        tools:layout_editor_absoluteY="381dp" />
</LinearLayout>

package com.ttg.myapplicationxmpptest;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import org.apache.http.conn.ssl.SSLSocketFactory;
import org.jivesoftware.smack.AbstractXMPPConnection;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;

public class MainActivity2 extends AppCompatActivity {
    protected static final String TAG = "ConnectionManager";
    /*
     * SERVICE_NAME and HOST_NAME are your server details.
     * Make sure you edit this with your own
     * */
    protected static final String SERVICE_NAME = "mongoose.netaxis.co";
    protected static final String HOST_NAME = "mongoose.netaxis.co";

    public static AbstractXMPPConnection mConnection;
    private XMPPTCPConnectionConfiguration mConnectionConfiguration;

    private boolean startConnected = false;
    EditText userNameET, passwordET;
    TextView status;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        Button connnect = findViewById(R.id.button);
        userNameET = findViewById(R.id.userName);
        passwordET = findViewById(R.id.password);
        status = findViewById(R.id.status);
        connnect.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startLogin(userNameET.getText().toString(),passwordET.getText().toString());
              //  userNameET.setText("");
               // passwordET.setText("");
            }
        });

    }


    /*
     * startLogin creates the connection for the log in process.
     * First, a connection to the server must be established. After the connection
     *   is established, then only can you process the login details.
     * */
    private void startLogin(final String username, final String password) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                mConnectionConfiguration = XMPPTCPConnectionConfiguration.builder()
                        .setUsernameAndPassword(username, password) // The username and password supplied by the user
                        .setServiceName(SERVICE_NAME) // Service name
                        .setHost(HOST_NAME) // Server host name
                        .setPort(5222) // Incoming port (might depend on your XMPP server software)
                        .setSecurityMode(ConnectionConfiguration.SecurityMode.ifpossible) // Security mode is disabled for example purposes
                         .setCompressionEnabled(true)
                        .setResource("sender")
                        .setDebuggerEnabled(true)
                        .build();

                mConnection = new XMPPTCPConnection(mConnectionConfiguration);

                try {
                    mConnection.connect();
                    startConnected = true;
                } catch (Exception e) {
                    e.printStackTrace();
                }

                // If the connection is successful, we begin the login process
                if(startConnected) {
                    Log.e(TAG, "Connected");
                    connectionLogin();

                } else {
                    Log.e(TAG, "Unable to connect");
                }
            }
        }).start();
    }

    private boolean loggedIn = true;
    private void connectionLogin() {
        try {
            //XMPPConnection connection = new XMPPConnection(mConnectionConfiguration);


           // xmppClient.setConnection(mConnection);
            mConnection.login();
            Presence presence = new Presence(Presence.Type.available);
            mConnection.sendPacket(presence);

        } catch (Exception e) {
            loggedIn = false;
        }

        // If the login fails, we disconnect from the server
        if(!loggedIn) {
            Log.e(TAG, "Unable to login");

            disconnect();
            loggedIn = true;
        } else {
            // If the login succeeds, we implement the chat listener.
            // It's important to implement the listener here so we can receive messages sent to us
            //      when we're offline.
          //  createChatListener();
            // Callback to LoginScreen to change the UI to the ChatScreen listview
           // EventBus.getDefault().post(new LoggedInEvent(true));
            Log.e(TAG, "Logged in");

            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    status.setText("Logged In  : " + userNameET.getText().toString());
                    status.setTextColor(Color.GREEN);
                }
            });

        }
    }

    private void disconnect() {
        if(mConnection != null && mConnection.isConnected()) {
            new AsyncTask<Void, Void, Void>() {
                @Override
                protected Void doInBackground(Void... params) {
                    mConnection.disconnect();
                    Log.e(TAG, "Connection disconnected");
                    return null;
                }
            }.execute();
        }
    }



}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_gravity="center"
    android:gravity="center"
    android:layout_height="match_parent"
    tools:context=".MainActivity2">

    <EditText
        android:id="@+id/userName"
        android:layout_height="50dp"
        android:textColor="#000000"
        android:hint="user name"
        android:layout_margin="10dp"
        android:textColorHint="@color/black"
        android:layout_width="match_parent"
        android:text="" />
    <EditText
        android:id="@+id/password"
        android:layout_height="50dp"
        android:textColor="#000000"
        android:layout_margin="10dp"
        android:hint="password"
        android:textColorHint="@color/black"
        android:layout_width="match_parent"
        android:text="" />
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_marginTop="10dp"
        android:layout_height="wrap_content"
        android:text="Connect"
        tools:layout_editor_absoluteX="178dp"
        tools:layout_editor_absoluteY="217dp" />

    <TextView
        android:id="@+id/status"
        android:layout_width="wrap_content"
        android:layout_marginTop="50dp"
        android:layout_height="wrap_content"
        android:textSize="20dp"
        android:maxLines="10"
        android:text="Connection Status"
        tools:layout_editor_absoluteX="166dp"
        tools:layout_editor_absoluteY="381dp" />
</LinearLayout>

implementation "org.igniterealtime.smack:smack-android-extensions:4.1.3"
implementation "org.igniterealtime.smack:smack-tcp:4.1.3"

package com.ttg.androidxmppsample;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import org.jivesoftware.smack.AbstractXMPPConnection;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.ConnectionListener;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
import org.jxmpp.stringprep.XmppStringprepException;

import java.io.IOException;

public class MainActivityInitXMPP extends AppCompatActivity {
    String TAG = "ConnectXmpp";
    String DOMAIN = "jabber.org";
    String HOST = "10.11.227.130";

    int PORT = 5222;

    private String userName ="";
    private String passWord = "";

    public static boolean connected = false;
    XMPPConnectionListener connectionListener = new MainActivityInitXMPP.XMPPConnectionListener();
    TextView connStatus ;
    private boolean startConnected = false;
    AbstractXMPPConnection connection = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitNetwork().build();
        StrictMode.setThreadPolicy(policy);
        Button btn  = findViewById(R.id.button);
        connStatus = findViewById(R.id.textView);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                try {
                    init("","");
                } catch (XmppStringprepException e) {
                    Log.i("dbXMPP", "XmppStringprepException!");
                    e.printStackTrace();
                }

                // startLogin("lx2rvktowng3","9739876646vV");

                // startLogin("","");
            }
        });

    }


    public void init (String username, String password) throws XmppStringprepException {

        Log.i("dbXMPP", "Initializing!");
        XMPPTCPConnectionConfiguration.Builder configuration =  XMPPTCPConnectionConfiguration.builder();
        configuration.setUsernameAndPassword(username,password);
        configuration.setSecurityMode(ConnectionConfiguration.SecurityMode.ifpossible);
        configuration.setResource("SomeResource");
        configuration.setXmppDomain(DOMAIN);
        configuration.setPort(PORT);
        configuration.allowEmptyOrNullUsernames();

         connection = new XMPPTCPConnection(configuration.build());
        connection.addConnectionListener(connectionListener);

        try {
            // mConnection.setReplyTimeout(10000);
            connection.connect();
            startConnected = true;
        } catch (Exception e) {
            e.printStackTrace();
            Log.e(TAG, " ***** + Connected" +e.getLocalizedMessage());
        }


    }

    //  Connection Listener to check connection state
    public class XMPPConnectionListener implements ConnectionListener {

        @Override
        public void connected(@NonNull final XMPPConnection connection) {

            Log.i("dbXMPP", "Connected!");
            connected = true;
            connStatus.setText("Connected");
            connStatus.setTextColor(Color.GREEN);

            if (!connection.isAuthenticated()) {
                //  login();
            }


        }

        @Override
        public void authenticated(XMPPConnection xmppConnection, boolean b) {
            Log.i("dbXMPP", "authenticated!");
            connStatus.setText("Connected , authenticated");
            connStatus.setTextColor(Color.GREEN);

        }

        @Override
        public void connectionClosed() {
            Log.d("dbXMPP", "ERROR connectionClosed!");
            //  connStatus.setText("connectionClosed");
            //  connStatus.setTextColor(Color.RED);
        }

        @Override
        public void connectionClosedOnError(Exception e) {
            //  connStatus.setText("connectionClosedOnError");
            // connStatus.setTextColor(Color.RED);
            Log.d("dbXMPP", "ERROR connectionClosedOnError!");
        }

    }

    private boolean loggedin = true;

    public void login() {

        try {

            connection.login(userName, passWord);
            //connection.login(userName, passWord);


        } catch (XMPPException | SmackException | IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            loggedin = false;
          //  chat_created = false;
        }

        if (!loggedin) {
            Log.e(TAG, "Unable to login");

            //  disconnect();
            loggedin = true;
        } else {


            Log.e(TAG, "Logged in");
        }

    }
    }

Android Kotlin Advantages

2022-03-19T16:01:00.001+05:30

Android Kotlin Advantages

1.Readability

2. Null Safety

3.Interoperable

4. SmartCast

5.Perfomance

Android Kotlin DisAdvantages

1. NameSpace Declaration

2. No Static Declaration

Configure Kotlin Plugin to Android Studio

2017-07-24T11:02:00.000+05:30

Kotlin is a new programming language Developed by JetBrains.

This article about
1.How to configure Kotlin plugin to Android Studio.
2. Create Hollo world App.

Install Kotlin Plugin to Android Studio

File -> Settings -> Plugins - > Browse Repositories -> Search -> Kotlin -> Install

Create new Android Project and Apply Kotlin Plugin to your project.

Apply Kotlin to your project

buildscript {
    ext.kotlin_version = "1.0.6" // replace with the latest (stable) version: https://github.com/JetBrains/kotlin/releases/latest

    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android' // apply kotlin android plugin

Convert Activity java code to Kotlin

This is java code

package world.hello.kotlin.kotlinfirstproject;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

After Conversion

package world.hello.kotlin.kotlinfirstproject

import android.support.v7.app.AppCompatActivity
import android.os.Bundle

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }
}

Android NANOHttpd share images example

2016-12-16T15:39:00.004+05:30

Android NANOHttpd

Share files between the device using local network.

* Pic images from phone gallery and share with local network.
*It will work only same wifi network
*share files have used GET method.

add gradle

dependencies {
  
    compile 'org.nanohttpd:nanohttpd:2.2.0'   
}

Activity source code

package nanohttpd.test.com.postimage;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.esafirm.imagepicker.features.ImagePicker;

public class MainActivity extends AppCompatActivity {

    public  static int REQUEST_CODE_PICKER =103;
    NanoTest mService;
    Button btn;
    String imagePath ="";
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
         btn = (Button)findViewById(R.id.button);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {

                ImagePicker.create(MainActivity.this) // Activity or Fragment                        .start(REQUEST_CODE_PICKER);
            }
        });
    }

    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE_PICKER && resultCode == RESULT_OK && data != null) {

          //  printImages(images);
            imagePath = ""+ImagePicker.getImages(data).get(0).getPath();
            if(mService != null) {
                mService.setImagePath(imagePath);
            }
            Log.e("MainActivity","imagePath :: " +ImagePicker.getImages(data).get(0).getPath());
            Intent mIntent = new Intent(this, NanoTest.class);
            bindService(mIntent, mConnection, Context.BIND_AUTO_CREATE);
            return;
        }
    }

    private ServiceConnection mConnection = new ServiceConnection () {
        @Override        public void onServiceConnected(ComponentName className, IBinder service) {
            NanoTest.NanoTestBinder binder = (NanoTest.NanoTestBinder) service;
            mService = binder.getService();
            if(mService != null) {
                mService.setImagePath(imagePath);
            }
            mService.initializeServices(true,imagePath);
        }
        @Override        public void onServiceDisconnected(ComponentName arg0) {
            mService = null;
        }
    };



}

NanoHttpUtils Class

package nanohttpd.test.com.postimage;

import android.app.Service;
import android.content.Intent;
import android.net.wifi.WifiManager;
import android.os.Binder;
import android.os.Environment;
import android.os.IBinder;
import android.util.Log;


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

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.SocketTimeoutException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import fi.iki.elonen.NanoHTTPD;
import fi.iki.elonen.NanoHTTPD.Method;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class NanoTest extends Service  implements Callback<String> {
   private static final String AUTH_TYPE            = "Basic ";
   private static final String TAG                = "[NANO]";
   private static final int BUFFER_SIZE               = 128;       // 128 bytes   private static final int RECEIVE_TIMEOUT         = 1000*30;        // 30 sec   private static final String BROADCAST_MESSAGE_HELLO = "Hello";
   private static final String BROADCAST_MESSAGE_REPLY = "HRU";
   public static final int PORT = 1507;
   private final IBinder mBinder                 = new NanoTestBinder();
   private static String[] ipAddresses             = null;
   private TestNanoHttpD server                  = null;
   private HashMap<String, ServerSyncService>
                              allSyncServices = null;
   private volatile DatagramSocket socket              = null;
   // Client specific   private static InetAddress lastKnownServerAddress  = null;          /*< Auto-detected server address */   private boolean bRunDetection                 = true;
   private static final int SLEEP_TIME             = 30*60*1000;  // 30 minutes   private static final int NONE_FOUND_SLEEP_TIME    = 1000*30;    // 30 sec   private static final String MIME_JSON = "application/json";
   String imagePath ="";

   @Override   public void onResponse(Call<String> call, Response<String> response) {

      Log.d("response","response ::: " +response);
   }

   @Override   public void onFailure(Call<String> call, Throwable t) {

   }

   public class NanoTestBinder extends Binder {
      public NanoTest getService() {
            return NanoTest.this;
        }
   }
   
   public static abstract class ServerSyncService {
      protected static final String OLDEST_TIMESTAMP = "2016-05-10T00:00:00.000Z";
      public abstract String processData(Method method, String json, String offset);
      public abstract String getListenUri();
      public static String getJsonStatus(String status) {
         if(status == null)
            status = "success";
         return "{\"data\":\""+status+"\"}";
      }

   };
   
   public static final String[] getCurrentIpAddresses() {
      return ipAddresses;
   }
   
   public static final InetAddress getLastKnownServerAddress() {
      return lastKnownServerAddress;
   }
    
   @Override   public void onCreate() {
      super.onCreate();
   }

   @Override   public IBinder onBind(Intent intent) {
      return mBinder;
   }
   
   @Override   public boolean onUnbind(Intent intent) {
      stopServer();
      stopServerDetection();
      return false;
   }
   
   public void initializeServices(boolean bServer,String imagePaths) {
      imagePath = imagePaths;
      getAllIpAddresses();
         restartServer();
   }
   
   private void stopServerDetection() {
      bRunDetection = false;
   }
   
   private void startServerDetection() {
      bRunDetection = true;
      Thread thread = new Thread(new Runnable() {
         @Override         public void run() {
            try {
               while(bRunDetection) {
                  findServer();
                  Thread.sleep(lastKnownServerAddress == null ? NONE_FOUND_SLEEP_TIME : SLEEP_TIME);
               }
            } catch(Exception e) {
               e.printStackTrace();
            }
            
         }
      });
      thread.start();
   }
   
   public void stopServer() {
      // Close Broadcast Server      if(socket != null)
         socket.close();
      socket = null;

      // Close API Server      if(server != null && server.isAlive())
         server.stop();
      server = null;
      
   }

   public void setImagePath(String imagePath) {
      this.imagePath = imagePath;
   }

   private void startBroadcastServer() {
      try {
         // Start Broadcast server         socket = new DatagramSocket(PORT, InetAddress.getByName("0.0.0.0"));
         socket.setBroadcast(true);
         Thread thread = new Thread(new Runnable() {
            @Override            public void run() {
               byte[] recvBuf = new byte[BUFFER_SIZE];
               while(socket != null) {
                  try {
                     DatagramPacket packet = new DatagramPacket(recvBuf, recvBuf.length);
                     socket.receive(packet);
                     String message = new String(packet.getData()).trim();
                     Log.d(TAG, "Server Received:"+message+":"+packet.getAddress().getHostAddress()+":"+packet.getPort());
                     if(message.equalsIgnoreCase(BROADCAST_MESSAGE_HELLO)) {
                        byte[] sendData = BROADCAST_MESSAGE_REPLY.getBytes();
                        DatagramPacket sendPacket = new DatagramPacket(sendData,
                                                            sendData.length,
                                                            packet.getAddress(),
                                                            packet.getPort());
                        socket.send(sendPacket);
                     }
                  } catch(SocketException e) {
                     e.printStackTrace();
                     socket = null;
                  } catch(Exception e) {
                     e.printStackTrace();
                  }
               }
            }
         });
         thread.start();
      } catch(Exception e) {
         e.printStackTrace();
      }
   }

   /**    * Tries finding a server.    *    * Requires to be run on a different thread.    *     * @return Returns lastKnownServerAddress (can be null)    */   public static InetAddress findServer() {
      DatagramSocket client = null;
      try {
         client = new DatagramSocket();
         byte[] helloMessage = BROADCAST_MESSAGE_HELLO.getBytes();
         client.setBroadcast(true);

         // Try Broadcast IP         DatagramPacket sendPacket = new DatagramPacket(helloMessage,
                                             helloMessage.length,
                                             InetAddress.getByName("255.255.255.255"),
                                             PORT);
         client.send(sendPacket);

         // Try Receiving response         byte[] recvBuf = new byte[BUFFER_SIZE];
         Log.d(TAG, "Starting receive...");
         DatagramPacket packet = new DatagramPacket(recvBuf, recvBuf.length);
         client.setSoTimeout(RECEIVE_TIMEOUT);
         client.receive(packet);
         String message = new String(packet.getData()).trim();
         Log.d(TAG, "Client Received:"+message);
         if(message.equalsIgnoreCase(BROADCAST_MESSAGE_REPLY)) {
            lastKnownServerAddress = packet.getAddress();
            Log.d(TAG, "Found Server:"+lastKnownServerAddress.getHostAddress()+":"+lastKnownServerAddress.getHostName());
         }
      } catch(SocketTimeoutException e) {
         Log.d(TAG, "Timedout...");
      } catch(Exception e) {
         e.printStackTrace();
      } finally {
         if(client != null)
            client.close();
      }
      return lastKnownServerAddress;
   }

   private void startServer() throws IOException {
      // Start API Server      server = new TestNanoHttpD();
      server.start();
      
      startBroadcastServer();
   }

   private void restartServer() {
      try {
         stopServer();

         startServer();
      } catch(IOException e) {
         e.printStackTrace();
      }
   }
   
   private void getAllIpAddresses() {
      ArrayList<String> addresses = new ArrayList<String>();
       try {
           for(Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
               NetworkInterface intf = en.nextElement();
               for(Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
                   InetAddress inetAddress = enumIpAddr.nextElement();
                   if(!inetAddress.isLoopbackAddress()) {
                      Log.e(TAG, "Adding IP Address:"+inetAddress.getHostAddress().toString());
                       addresses.add(inetAddress.getHostAddress().toString());
                   }
                }
            }
        } catch (SocketException ex) {
            ex.printStackTrace();
        }
        ipAddresses = addresses.toArray(new String[0]);
   }

   private class TestNanoHttpD extends NanoHTTPD {
      
      public TestNanoHttpD() throws IOException {
         super(PORT);
      }

      private String mapToString(Map<String, String> params) {
         final StringBuilder buf = new StringBuilder();
         for(Map.Entry<String, String> entry : params.entrySet()) {
            buf.append(entry.getKey() + ":" + entry.getValue() + "\n");
         }
         return buf.toString();
      }

      @Override      public Response serve(String uri, Method method, Map<String, String> headers, Map<String, String> params, Map<String, String> files) {
         FileInputStream fis = null;
         try {
            fis = new FileInputStream(imagePath);
         } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block            e.printStackTrace();
         }

         return newFixedLengthResponse(Response.Status.OK, "image/jpeg", fis,50000000);
      }


   }


}

Android Load images from Flikr

2016-08-31T22:06:00.002+05:30

Fetch the images from Flikr and cache the images without third party library

1. List of images

2. On click flip the image and get image information

Activity Code

Source Code

Android HD Video Player

2016-08-11T23:01:00.000+05:30

HD Video Player application for android . it will support all major Video formats

Android Studio - “Unmappable character for encoding UTF-8”

2016-06-01T15:06:00.003+05:30

Android Studio - “Unmappable character for encoding UTF-8”

Adding the following to `build.gradle` solves the problem :

android {
  
    compileOptions.encoding = 'ISO-8859-1'

}

java.lang.NoClassDefFoundError: com.google.android.gms.R$string

2016-05-20T14:42:00.003+05:30

java.lang.NoClassDefFoundError: com.google.android.gms.R$string

Include in your build.gradle dependencies this:

compile 'com.android.support:multidex:1.0.0'

your Manifest add MultiDexApplication class

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.multidex.myapplication">
    <application
        ...
        android:name="android.support.multidex.MultiDexApplication">
        ...
    </application>
</manifest>

If you already have your application class just extend it with MultiDexApplication class

How to get Particular application used Facebook Friends

2016-01-07T09:58:00.003+05:30

This post about how to get particular application used friends.

* You can get friend list who is using particular application.

Source Code Here

FacebookSdk.sdkInitialize(this);

GraphRequest request=   new GraphRequest(
        AccessToken.getCurrentAccessToken(),
        "/me/friends",
        null,
        HttpMethod.GET,
        new GraphRequest.Callback() {
            public void onCompleted(GraphResponse response) {
        

            }
        }
);

request.executeAsync();
Output
{  
   "data":[  
      {  
         "name":"Veena Potter",
         "id":"*******************"
      },
      {  
         "name":"VijayaKumar Muniappan",
         "id":"*********"
      },
      {  
         "name":"Mohammed Siddiq",
         "id":"1234324*********"
      }
   ],
   "paging":{  
      "next":"https:\/\/graph.facebook.com\/v2.5\/198639363810546\/friends?format=json&access_token=CAAOKcZCOlbVwBADkN0puCASZAdSJNPsHOqmUAZAPZB70OkftsRcIUSYZA9zKkWDFJbLvOZCwoFaTnWd9U6aa60ulmJ3aPiGKHZAtBxZBAQSNoojGZBVcDGDkd742jVkYIQkMlZAfaw7eNuwsN4dgHZBw29YnuxR5wHfeEcJMdFEgLZBJ7aSHCKYyjvDRsB0K03KtKiRZCv9RhNlFc9wZDZD&limit=25&offset=25&__after_id=enc_AdCJnOgPxZCJgh6xM5sZA3BoTs7q9POI3iIWOcsorUgCTJcHVg1jRUSO8vcoIkCvYkG7hSVf2hCZCi2U0rZAA1ZB6pfkZA"
   },
   "summary":{  
      "total_count":5
   }
},
error:null
}

Android native long text splitter like Magazine

2015-11-25T18:30:00.001+05:30

This post about how to split long html string as pager like Magazine .

Below the source code for splitting long html text by passing device height and width .

NativePageSplitter.java

package com.vj.pagesplitter;

import android.text.DynamicLayout;

import android.text.SpannableStringBuilder;

import android.text.TextPaint;

import android.util.Log;

import java.util.ArrayList;

import java.util.List;

public class NativePageSplitter {

private final int pageWidth;

private final int pageHeight;

private final float lineSpacingMultiplier;

private final float lineSpacingExtra;

private final List<CharSequence> pages = new ArrayList<CharSequence>();

private SpannableStringBuilder mSpannableStringBuilder = new SpannableStringBuilder();

public NativePageSplitter(int pageWidth, int pageHeight, float lineSpacingMultiplier, float lineSpacingExtra) {

this.pageWidth = pageWidth;

this.pageHeight = pageHeight;

this.lineSpacingMultiplier = lineSpacingMultiplier;

this.lineSpacingExtra = lineSpacingExtra;

}

public void append(CharSequence charSequence) {

mSpannableStringBuilder.append(charSequence);

}

public void split(TextPaint textPaint) {

DynamicLayout staticLayout = new DynamicLayout(

mSpannableStringBuilder,

textPaint,

pageWidth,

null,

lineSpacingMultiplier,

lineSpacingExtra,

true

);

int startLine = 0;

// Log.e("SM", "pages :: ####### &&&& " +staticLayout.getLineCount());

while(startLine < staticLayout.getLineCount()) {

// for(startLine =0; startLine< staticLayout.getLineCount(); startLine++) {

int startLineTop = staticLayout.getLineTop(startLine);

int endLine = staticLayout.getLineForVertical(startLineTop + pageHeight);

int endLineBottom = staticLayout.getLineBottom(endLine);

int lastFullyVisibleLine;

if(endLineBottom > startLineTop + pageHeight){

lastFullyVisibleLine = endLine - 1;

}

else{

lastFullyVisibleLine = endLine;

}

int startOffset = staticLayout.getLineStart(startLine);

Log.e("SM", "######## :lastFullyVisibleLine:::: " + lastFullyVisibleLine);

int endOffset = staticLayout.getLineEnd(lastFullyVisibleLine);

pages.add(mSpannableStringBuilder.subSequence(startOffset, endOffset));

startLine = lastFullyVisibleLine + 1;

}

public List<CharSequence> getPages() {

//Log.e("SM", "pages :: ####### " +pages.size());

return pages;

}

Activity Class

package com.vj.pagesplitter;

import android.app.Activity;

import android.os.Bundle;

import android.text.Html;

import android.text.TextPaint;

import android.util.DisplayMetrics;

import android.util.Log;

public class MainActivity extends Activity {

String htmlStrng ="<!DOCTYPE html><html><body>At the core of Android Studio is an intelligent code editor capable of advanced code completion, refactoring, and code analysis.The powerful code editor helps you be a more productive Android app developer..This is a paragraph.TAt the core of Android Studio is an intelligent code editor capable of advanced code completion, refactoring, and code analysis.The powerful code editor helps you be a more productive Android app developer.</body></html>";

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

DisplayMetrics dimension = new DisplayMetrics();

getWindowManager().getDefaultDisplay()

.getMetrics(dimension);

int w = dimension.widthPixels;

int h = dimension.heightPixels;

// PageSplitter_Articles pageSplitter = new PageSplitter_Articles(w-80, h-80

// , 1.3f, 1);

NativePageSplitter pageSplitter= new NativePageSplitter(w-70, h-70

, 1.2f, 1);

TextPaint textPaint = new TextPaint();

textPaint.setTextSize(15);

pageSplitter.append(Html.fromHtml(htmlStrng));

pageSplitter.split(textPaint);

String[] arr = new String[pageSplitter.getPages().size()];

for (int i = 0; i < pageSplitter.getPages().size(); i++) {

arr[i] = pageSplitter.getPages().get(i).toString();

Log.e("SM", "arr[i] " +arr[i]);

}

Download Source Code

Java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

2015-10-29T13:42:00.000+05:30

Java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

when i try to remove fragment onStop after onSaveInstanceState got exception .

Original Code

ft = fm.beginTransaction();

ft.remove(fragment3);

ft.addToBackStack(null);

ft.commit();

Solutions

Instead of ft.commit change to ft.commitAllowingStateLoss();

ft = fm.beginTransaction();

ft.remove(fragment3);

ft.addToBackStack(null);

ft.commitAllowingStateLoss();

Android Tag Cloud View Like Republic News

2015-09-15T15:14:00.000+05:30

This post about Tag cloud view like republic news.

1.BARREL View

2. SPHERE View

3.Flat View

Output

Following library i have referred and modified as per as requirement.
Source Code of View

Android Horizontal Staggeredgridview with PositiontoCenter

2015-08-04T15:52:00.000+05:30

This post about Horizontal Staggeredgridview with view to center position like pager.

when i have developed application . i have requirement like tile view with on swipe view should be center to position. then i tried and found solution.

See the below screen output will be like this.

Output

For this one i have used libray called lucasr https://github.com/lucasr/twoway-view/ and modified as per as my requirement.

Activity Code

package inf.vj.twowaystaggeredgridviewviewcenterposition;

import java.util.ArrayList;

import org.lucasr.twowayview.widget.DividerItemDecoration;

import org.lucasr.twowayview.widget.TwoWayView;

import com.squareup.picasso.Picasso;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.support.v7.widget.RecyclerView;

import android.widget.AbsListView.OnScrollListener;

public class MainActivity extends Activity {

TwoWayView mRecyclerView;

ArrayList<NewsStructure> newsArrayLst = new ArrayList<NewsStructure>();

String[] strImageUrl = {"http://www.hdwallpapersos.com/wp-content/uploads/2014/08/Nature-HD-Wallpaper-1080p.jpg",

"https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQJfVFBg3wTps8lucZi1RJ_sDrNDlsWUn5v_CP3dTI-eWlqnedn",

"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSnrFdFpG_70zp8RFPkuM7myrc6xkIVKS8aubXAvo_t3unbWuiJ",

"https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSuTV9Y9xYVvd0DHO7-gHht6O8tc343B5pa9kQnXMQbeyfQvwQF",

"https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcS5iTL5GeVCo2hlfCl9h1c8fBW7bF-2ZQ7hAuo6aNGzgpZgfELW",

"https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQJfVFBg3wTps8lucZi1RJ_sDrNDlsWUn5v_CP3dTI-eWlqnedn",

"http://www.hdwallpapersos.com/wp-content/uploads/2014/08/Nature-HD-Wallpaper-1080p.jpg",

"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSnrFdFpG_70zp8RFPkuM7myrc6xkIVKS8aubXAvo_t3unbWuiJ",

"https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSuTV9Y9xYVvd0DHO7-gHht6O8tc343B5pa9kQnXMQbeyfQvwQF",

"https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcS5iTL5GeVCo2hlfCl9h1c8fBW7bF-2ZQ7hAuo6aNGzgpZgfELW"};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mRecyclerView = (TwoWayView) findViewById(R.id.list);

mRecyclerView.setHasFixedSize(true);

mRecyclerView.setLongClickable(false);

mRecyclerView.setOrientation(org.lucasr.twowayview.TwoWayLayoutManager.Orientation.HORIZONTAL);

for(int i =0; i< 10; i++){

NewsStructure newsStr = new NewsStructure();

newsStr.setmId(""+strImageUrl[i]);

newsArrayLst.add(newsStr);

}

final Drawable divider = getResources().getDrawable(R.drawable.divider);

mRecyclerView.addItemDecoration(new DividerItemDecoration(divider));

ItemAdapter mAdapter = new ItemAdapter(MainActivity.this, mRecyclerView, R.layout.activity_main, newsArrayLst);

mRecyclerView.setAdapter(mAdapter);

mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {

@SuppressLint("NewApi") @Override

public void onScrollStateChanged(RecyclerView recyclerView, int scrollState) {

boolean pauseOnScroll = false; // or true

boolean pauseOnFling = false; // or false

final Picasso picasso = Picasso.with(MainActivity.this);

switch (scrollState) {

case OnScrollListener.SCROLL_STATE_IDLE:

picasso.resumeTag("mylist");

break;

case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:

if (pauseOnScroll) {

picasso.pauseTag("mylist");

}

break;

case OnScrollListener.SCROLL_STATE_FLING:

if (pauseOnFling) {

picasso.pauseTag("mylist");

}

break;

}

@SuppressLint("NewApi") @Override

public void onScrolled(RecyclerView recyclerView, int i, int i2) {

}

});

}

Adapter

package inf.vj.twowaystaggeredgridviewviewcenterposition;

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.Typeface;

import android.support.v7.widget.RecyclerView;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ImageView;

import android.widget.TextView;

import org.lucasr.twowayview.TwoWayLayoutManager;

import org.lucasr.twowayview.widget.TwoWayView;

import org.lucasr.twowayview.widget.SpannableGridLayoutManager;

import org.lucasr.twowayview.widget.StaggeredGridLayoutManager;

import com.squareup.picasso.Picasso;

import java.util.ArrayList;

import java.util.List;

public class ItemAdapter extends

RecyclerView.Adapter<ItemAdapter.SimpleViewHolder> {

private final Context mContext;

private final int mLayoutId;

ArrayList<NewsStructure> newsArrayLst = new ArrayList<NewsStructure>();

static Typeface typeFace;

String imageUrl = "";

public static class SimpleViewHolder extends RecyclerView.ViewHolder {

public final ImageView imageView;

public SimpleViewHolder(View view) {

super(view);

imageView = (ImageView) view.findViewById(R.id.newsTileImage);

}

public ItemAdapter(Context context, TwoWayView recyclerView, int layoutId,

ArrayList<NewsStructure> newsAry) {

mContext = context;

newsArrayLst = newsAry;

mLayoutId = layoutId;

}

@Override

public SimpleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

final View view = LayoutInflater.from(mContext).inflate(

R.layout.news_feed_item_en, parent, false);

return new SimpleViewHolder(view);

}

@SuppressWarnings("deprecation")

@Override

public void onBindViewHolder(SimpleViewHolder holder, int position) {

final View itemView = holder.itemView;

final int itemId = position;

if (mLayoutId == R.layout.activity_main) {

int dimenId;

final int span;

if (itemId % 3 == 0) {

imageUrl = newsArrayLst.get(position).getmId();

span = 2;

Picasso.with(mContext).load(imageUrl)

.placeholder(R.drawable.ic_launcher).noFade()

.tag("mylist").into(holder.imageView);

} else {

imageUrl = newsArrayLst.get(position).getmId();;

span = 1;

Picasso.with(mContext).load(imageUrl)

.placeholder(R.drawable.ic_launcher).noFade()

.tag("mylist").into(holder.imageView);

}

dimenId = R.dimen.staggered_child_medium;

final int size = mContext.getResources().getDimensionPixelSize(

dimenId);

final StaggeredGridLayoutManager.LayoutParams lp = (StaggeredGridLayoutManager.LayoutParams) itemView

.getLayoutParams();

lp.span = span;

lp.width = size;

itemView.setLayoutParams(lp);

}

@Override

public int getItemCount() {

return newsArrayLst.size();

}

NewsStructure.class

NewsStructure.class

package inf.vj.twowaystaggeredgridviewviewcenterposition;

public class NewsStructure {

public String mId ="";

public String getmId() {

return mId;

}

public void setmId(String mId) {

this.mId = mId;

}

XML

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

<RelativeLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_gravity="left"

android:orientation="vertical" >

<org.lucasr.twowayview.widget.TwoWayView

android:id="@+id/list"

style="@style/TwoWayView"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_gravity="left"

android:background="#000000"

android:visibility="visible"

app:twowayview_layoutManager="StaggeredGridLayoutManager"

app:twowayview_numColumns="2"

app:twowayview_numRows="2" />

</RelativeLayout>

</LinearLayout>

news_feed_item_en.xml

<?xml version="1.0" encoding="utf-8"?>

<!--

Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

-->

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<ImageView

android:id="@+id/newsTileImage"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:src="@drawable/ic_launcher"

android:gravity="center"

android:scaleType="centerCrop"

</RelativeLayout>

Download Source code

Android Customize Intent Share

2015-07-22T13:22:00.000+05:30

Android Customize Intent Share

This post about how to share the data from particular application like : whatsapp m facebook , twitter , gmail etc..

Share Intent via GMAIL

Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);

shareIntent.setType("text/plain");

shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, Html.fromHtml(shareTitle)

.toString());

shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, Html.fromHtml(shareContent)

.toString());

shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));

PackageManager pm = mContext.getPackageManager();

List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);

for (final ResolveInfo app : activityList)

{

if ((app.activityInfo.name).contains("android.gm"))

{

final ActivityInfo activity = app.activityInfo;

final ComponentName name = new ComponentName(activity.applicationInfo.packageName, activity.name);

shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);

shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);

shareIntent.setComponent(name);

mContext.startActivity(shareIntent);

break;

}

Share Intent Via TWITTER

Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);

shareIntent.setType("text/plain");

shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, Html.fromHtml(shareTitle)

.toString());

shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, Html.fromHtml(shareContent)

.toString());

shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));

PackageManager pm = mContext.getPackageManager();

List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);

for (final ResolveInfo app : activityList)

{

if ("com.twitter.android.PostActivity".equals(app.activityInfo.name))

{

final ActivityInfo activity = app.activityInfo;

final ComponentName name = new ComponentName(activity.applicationInfo.packageName, activity.name);

shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);

shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);

shareIntent.setComponent(name);

mContext.startActivity(shareIntent);

break;

}

Share Intent Via Facebook

Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);

shareIntent.setType("text/plain");

shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, Html.fromHtml(shareTitle)

.toString());

shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, Html.fromHtml(shareContent)

.toString());

shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));

PackageManager pm = mContext.getPackageManager();

List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);

for (final ResolveInfo app : activityList)

{

if ((app.activityInfo.name).contains("facebook"))

{

final ActivityInfo activity = app.activityInfo;

final ComponentName name = new ComponentName(activity.applicationInfo.packageName, activity.name);

shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);

shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);

shareIntent.setComponent(name);

mContext.startActivity(shareIntent);

break;

}

Share Intent Via WhatsApp

Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);

shareIntent.setType("text/html");

shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, Html.fromHtml(shareTitle)

.toString());

shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, Html.fromHtml(shareContent)

.toString());

shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));

PackageManager pm = mContext.getPackageManager();

List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);

for (final ResolveInfo app : activityList) {

if ((app.activityInfo.name).contains("com.whatsapp")) {

final ActivityInfo activity = app.activityInfo;

final ComponentName name = new ComponentName(

activity.applicationInfo.packageName, activity.name);

shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);

shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK

| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);

shareIntent.setComponent(name);

mContext.startActivity(shareIntent);

break;

}

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Adding the following to build.gradle solves the problem :

}

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Adding the following to `build.gradle` solves the problem :