EZWorks

EZ Folder Player (Ad) Privacy Policy

2022-06-21T21:27:00.002+08:00

EZWorks built the EZ Folder Player (Ad) app as an Ad Supported app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

If you choose to use my Service, then you agree to the collection and use of information in relation to this policy. The Personal Information that I collect is used for providing and improving the Service. I will not use or share your information with anyone except as described in this Privacy Policy.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at EZ Folder Player (Ad) unless otherwise defined in this Privacy Policy.

Information Collection and Use

For a better experience, while using our Service, I may require you to provide us with certain personally identifiable information. The information that I request will be retained on your device and is not collected by me in any way.

The app does use third-party services that may collect information used to identify you.

Link to the privacy policy of third-party service providers used by the app

Log Data

I want to inform you that whenever you use my Service, in a case of an error in the app I collect data and information (through third-party products) on your phone called Log Data. This Log Data may include information such as your device Internet Protocol (“IP”) address, device name, operating system version, the configuration of the app when utilizing my Service, the time and date of your use of the Service, and other statistics.

Cookies are files with a small amount of data that are commonly used as anonymous unique identifiers. These are sent to your browser from the websites that you visit and are stored on your device's internal memory.

This Service does not use these “cookies” explicitly. However, the app may use third-party code and libraries that use “cookies” to collect information and improve their services. You have the option to either accept or refuse these cookies and know when a cookie is being sent to your device. If you choose to refuse our cookies, you may not be able to use some portions of this Service.

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

I want to inform users of this Service that these third parties have access to their Personal Information. The reason is to perform the tasks assigned to them on our behalf. However, they are obligated not to disclose or use the information for any other purpose.

Security

I value your trust in providing us your Personal Information, thus we are striving to use commercially acceptable means of protecting it. But remember that no method of transmission over the internet, or method of electronic storage is 100% secure and reliable, and I cannot guarantee its absolute security.

Links to Other Sites

This Service may contain links to other sites. If you click on a third-party link, you will be directed to that site. Note that these external sites are not operated by me. Therefore, I strongly advise you to review the Privacy Policy of these websites. I have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party sites or services.

Children’s Privacy

These Services do not address anyone under the age of 13. I do not knowingly collect personally identifiable information from children under 13 years of age. In the case I discover that a child under 13 has provided me with personal information, I immediately delete this from our servers. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact me so that I will be able to do the necessary actions.

Changes to This Privacy Policy

I may update our Privacy Policy from time to time. Thus, you are advised to review this page periodically for any changes. I will notify you of any changes by posting the new Privacy Policy on this page.

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

EZ Folder Player Privacy Policy

2022-06-21T21:23:00.002+08:00

EZWorks built the EZ Folder Player app as a Commercial app. This SERVICE is provided by EZWorks and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at EZ Folder Player unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

I do not knowingly collect personally identifiable information from children. I encourage all children to never submit any personally identifiable information through the Application and/or Services. I encourage parents and legal guardians to monitor their children's Internet usage and to help enforce this Policy by instructing their children never to provide personally identifiable information through the Application and/or Services without their permission. If you have reason to believe that a child has provided personally identifiable information to us through the Application and/or Services, please contact us. You must also be at least 16 years of age to consent to the processing of your personally identifiable information in your country (in some countries we may allow your parent or guardian to do so on your behalf).

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

Image to ColorSketch (Ad) Privacy Policy

2022-06-21T21:12:00.005+08:00

EZWorks built the Image to ColorSketch (Ad) app as an Ad Supported app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at Image to ColorSketch (Ad) unless otherwise defined in this Privacy Policy.

Information Collection and Use

The app does use third-party services that may collect information used to identify you.

Link to the privacy policy of third-party service providers used by the app

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

Image to ColorSketch Privacy Policy

2022-06-21T21:08:00.002+08:00

EZWorks built the Image to ColorSketch app as a Commercial app. This SERVICE is provided by EZWorks and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at Image to ColorSketch unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

AudioTagFixer (Ad) Privacy Policy

2022-06-21T20:57:00.002+08:00

EZWorks built the AudioTagFixer (Ad) app as an Ad Supported app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at AudioTagFixer (Ad) unless otherwise defined in this Privacy Policy.

Information Collection and Use

The app does use third-party services that may collect information used to identify you.

Link to the privacy policy of third-party service providers used by the app

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

Xmas Snowflakes LiveWallpaper Privacy Policy

2022-06-21T20:31:00.005+08:00

EZWorks built the Xmas Snowflakes LiveWallpaper app as a Free app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at Xmas Snowflakes LiveWallpaper unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

File Explorer Privacy Policy

2022-06-21T20:20:00.006+08:00

EZWorks built the File Explorer app as a Free app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at File Explorer unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

EZ App Installer Privacy Policy

2022-06-21T19:59:00.007+08:00

EZWorks built the EZ App Installer app as an Ad Supported app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at EZ App Installer unless otherwise defined in this Privacy Policy.

Information Collection and Use

The app does use third-party services that may collect information used to identify you.

Link to the privacy policy of third-party service providers used by the app

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

Battery Widget (Donate) Privacy Policy

2022-06-21T14:53:00.007+08:00

EZWorks built the Battery Widget (Donate) app as a Commercial app. This SERVICE is provided by EZWorks and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at Battery Widget (Donate) unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

Battery Widget Privacy Policy

2022-04-29T15:44:00.007+08:00

EZWorks built the Battery Widget app as a Free app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at Battery Widget unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-04-29

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

EZ Crypto Privacy Policy

2018-05-11T18:17:00.006+08:00

EZWorks built the EZ Crypto app as a Free app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at EZ Crypto unless otherwise defined in this Privacy Policy.

Information Collection and Use

The app does use third-party services that may collect information used to identify you.

Link to the privacy policy of third-party service providers used by the app

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

於 Kotlin 使用 Glide v4 Generated API

2018-05-11T17:39:00.001+08:00

Glide 從 v3 升級到 v4 之後，某些設置例如 skipMemoryCache()、placeholder() 等...，必須先另外建立 RequestOptions 再 apply()，用法不像原本那麼流暢。

val options = RequestOptions()
                .skipMemoryCache(true)
                .placeholder(R.drawable.place_holder)

Glide.with(this)
     .load(url)
     .apply(options)
     .into(ui_sparkline_7d)

不過官方也提供了一個 Generated API 的方式，讓我們可以用跟以前一樣的方式呼叫這些 API。
以下以 Kotlin 為示範：

首先添加 Glide 的依賴庫及 Annotation Processor。

dependencies {
    implementation 'com.github.bumptech.glide:glide:4.7.1'
    kapt 'com.github.bumptech.glide:compiler:4.7.1'
}

為了讓 Kotlin 支援 Annotation Processor，還需於 build.gradle 加上這行。

apply plugin: 'kotlin-kapt'

接著實作一個 AppGlideModule。

import com.bumptech.glide.annotation.GlideModule
import com.bumptech.glide.module.AppGlideModule

@GlideModule
class MyAppGlideModule : AppGlideModule()

最後把原本的 Glide.with() 改成 GlideApp.with()，就能跟之前一樣囉！

GlideApp.with(this)
        .load(url)
        .skipMemoryCache(true)
        .placeholder(R.drawable.place_holder)
        .into(imageView)

BatteryLevel Widget Privacy Policy

2018-01-10T10:31:00.006+08:00

EZWorks built the BatteryLevel Widge app as a Free app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at BatteryLevel Widge unless otherwise defined in this Privacy Policy.

Information Collection and Use

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

升級 macOS 後 Android Studio 出現 Can't start Git: /usr/bin/git 的問題

2017-09-27T11:54:00.002+08:00

今天把 macOS 升級到 High Sierra 了，
結果一打開 Android Studio 就出現以下的錯誤:

Can't start Git: /usr/bin/git
Probably the path to Git executable is not valid. Fix it.

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

解決方式很簡單，請在終端機執行 xcode-select --install 安裝新版的 Command Line Tools 就可以囉 :)

EZ Cafe Privacy Policy

2017-06-13T14:58:00.005+08:00

EZWorks built the EZ Cafe app as a Free app. This SERVICE is provided by EZWorks at no cost and is intended for use as is.

This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at EZ Cafe unless otherwise defined in this Privacy Policy.

Information Collection and Use

The app does use third-party services that may collect information used to identify you.

Link to the privacy policy of third-party service providers used by the app

Log Data

Service Providers

I may employ third-party companies and individuals due to the following reasons:

To facilitate our Service;
To provide the Service on our behalf;
To perform Service-related services; or
To assist us in analyzing how our Service is used.

Security

Links to Other Sites

Children’s Privacy

Changes to This Privacy Policy

This policy is effective as of 2022-06-21

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at willie.developer@gmail.com.

This privacy policy page was created at privacypolicytemplate.net and modified/generated by App Privacy Policy Generator

透過程式碼輸出 SharedPreferences 與 SQLite

2016-11-11T18:47:00.003+08:00

註：新版 Android Studio 的 Device File Explorer 已經可以直接開啟 InternalStorage 裡的檔案了，非常方便，不用再自行輸出了。

應用程式中常會使用 SharedPreferences 及 SQLite 來儲存資料，但想檢視裡頭資料時該怎麼做呢？

首先，SharedPreferences 以及 SQLite 都是以檔案方式儲存於 InternalStorage，路徑分別如下：

SharedPreferences：
使用 getDefaultSharedPreferences 的位置
/data/data/your.package.name/shared_prefs/your.package.name_preferences.xml
使用 getSharedPreferences 的位置
/data/data/your.package.name/shared_prefs/your_prefs_name.xml

SQLite：
/data/data/your.package.name/databases/your_db_name

但基本上 InternalStorage 是受保護的，想直接觀察會有點麻煩。
因此這邊提供了一個工具類(Java版、Kotlin版)，可以幫您把 SharedPreferences、SQLite、Realm、Logcat 輸出到外部儲存空間方便您檢視。
輸出位置
ExternalStorage/Android/data/your.package.name/files/

此外，別忘了添加權限。
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

App 在 Google Play 被停權與恢復的經驗分享

2016-08-09T14:09:00.000+08:00

最近心情真像是洗了三溫暖～
前幾天把已經很久沒維護的 EZ App安裝器稍微調整了 UI，修了修 Bug，提交更新。
幾個小時過去發現 Google Play 還沒反應，感覺有點怪...可能是系統忙碌吧。當下也沒想太多就跑去睡了。
隔天一早打開開發者控制台，登愣！又看到熟悉的景象... App 被停權了！！！

為什麼說"又"呢？
出來混總是要還的，被停權也不是第一次了。
多年前剛開始在 Google Play 上架時，學別人在商店描述裡加了一堆 Keyword，其實有沒有用也不知道。然後某次開發人員計劃政策調整後，這種行為被視為違規，於是一下子被停權兩隻 App。
畢竟是自己沒注意到政策調整，而且罪證確鑿，只好摸摸鼻子認了。不過明明是很簡單就能修正的問題，Google 總是完全不給機會就直接停權，手段實在狠毒！這也是最讓人難以接受的地方。

順帶一題，Google Play 的違規處分大概分為以下幾種：

拒絕：更新版本遭拒，但之前所發佈的版本仍會保留在 Google Play 商店中。
下架：應用程式會從 Google Play 下架。必須提交符合規範的更新版本，才能讓應用程式重新上架。
停權：應用程式會從 Google Play 下架。必須更改 package name，才能讓應用程式重新上架。這意味著將失去原本累積的下載數、統計資料和評分，一切重頭來過。
終止開發者帳號：所有應用皆會下架，無法再上架新應用。"相關帳戶"也會一併處分，不允許再註冊新的開發者帳號。

我三次遇到的都是停權，但這次的原因是為什麼呢？
根據信裡的說明是違反了開發人員發佈協議的"其他商店"條款。
什麼是"其他商店"條款？

4.5 其他商店。凡是「產品」具有任何推廣其他商店之用途，藉此引導使用者透過這類替代性管道發佈 Android 軟體應用程式或遊戲，則一概禁止在「商店」中發佈或提供。

奇怪？我的 App 裡面沒有推廣其他應用程式商店啊？
信中有申訴的管道，寫信去問明白吧。網頁說可以用中文、英文、日文及韓文提出申訴，就直接寫中文吧。一來比較好溝通，同時看看都是講中文的會不會比較寬大為懷 XDD～

提出申訴後過了幾個小時，收到回覆了。
原來是我的 App 有"分享 APK 檔案給朋友"的功能。因此被視為發佈應用程式的"替代性管道"，所以維持原判，不給恢復。

果然規則都 Google 說了算。
但內心覺得這條款有模糊的空間，應該還有爭取的機會，於是再次回信給他們。

這次我提出"分享 APK 檔案給朋友"與"商店"的概念應有一定程度的差異。且"這類替代性管道"的範圍太過含糊？在對條文有歧義的狀況下未給予修正機會而直接停權，是否又過於強硬。
同時也表明修改意願，讓 App 更符合政策規定。懇請將處分層級調整為輕一點的拒絕或下架，而不是直接停權。

隔天，收到回信。
這次帶來了好消息，說再次審查後已核准我的申訴，並有條件地將應用程式解除停權。
只要在接下來的 7 天內，提交符合政策的應用程式更新，App 就能重新上架。
回到開發者控制台，果然狀態從停權變成了下架。

應用程式資訊也恢復可以編輯的狀態，當然也能重新上傳 Apk 了。
立刻把 App 裡跟分享有關的功能拿掉，商店描述與圖檔素材也一併修改。
重新上傳修正版本，過了幾個小時，耶！我的 App 回來了！

經過一番折騰，總算有了好結果。這次運氣還算不錯，也感謝審核小組。
不過還是建議 Google 不要一下就把開發者打得無法翻身，這不是維繫客戶關係的好方法。
最後也建議所有開發者熟讀政策條款，並時時注意其改變。同時應用描述盡量精簡扼要，以免多說多錯。

參考資料：
開發人員計劃政策
開發人員發佈協議
瞭解應用程式遭拒、下架或停權
瞭解終止 Google Play 開發人員帳戶
申訴頁面

整合 Google Play Billing Library 的流程

2016-03-23T16:54:00.004+08:00

提醒，您必須擁有 Google Play 開發者帳戶並開啟 Google Payments 商家帳戶。

流程:
1. 於 build.gradle 中引入 Google Play Billing Library，程式內其他 Billing 相關的部分可暫時先不實作。

implementation 'com.android.billingclient:billing:*.*.*'

2. 將應用程式 Sign 好，上傳到 Developer Console 的任一測試階段。(需要一段時間生效)
3. 開始在 Developer Console 中建立應用程式內商品，並記得啟用。
4. 參考範例開始實作應用程式內購買。
5. 若有使用 ProGuard 也請記得加上

-keep class com.android.vending.billing.**

6. 於裝置上測試購買。
7. 購買成功後在 Developer Console 的訂單管理中可以看到該筆交易。(會標示為測試訂單)
8. 若有需要，可於訂單管理中進行退款(撤銷購買項目)的測試。

注意事項:
若您沒有自己的 Server 處理交易紀錄，而是靠 Play Store 來記錄的話。因為他有 Local Caching 的機制，有時不會立即反映交易狀態的改變。比如說您從訂單管理中取消了交易，但 App 透過 Google Play Billing Library 去查詢卻還是"已購買"的狀態。此時可以試著重啟裝置讓 Play Store 去同步交易狀態。

參考資料:
https://developer.android.com/google/play/billing

避免 Android Studio 輸出 APK 時出現 [MissingTranslation] 的問題

2015-12-14T15:37:00.003+08:00

最近在用 Android Studio 輸出 Signed APK 時遇到了以下錯誤:
Error: "xxx" is not translated in ... [MissingTranslation]

原因是 Lint 檢查到某些字串沒有被翻譯所導致。但有些字串就是不需、不想或懶得翻譯時該怎麼辦呢？

方法有以下幾種:
1.對不需翻譯的字串加上 translatable="false"

<string name="xxx" translatable="false">"XXX"</string>

2.在 strings.xml 的 resources 加上以下屬性

<resources 
    xmlns:tools="http://schemas.android.com/tools"
    tools:ignore="MissingTranslation" >

3.在 app/build.gradle 中加上以下設定

android {
    ...
    lintOptions {
        disable 'MissingTranslation'
    }
    ...
}

或

android {
    ...
    lintOptions {
        checkReleaseBuilds false
        abortOnError false
    }
    ...
}

參考資料:
http://blog.csdn.net/KjunChen/article/details/50043487

升級 SDK Tools & ADT 22.6 後 ProGuard 錯誤的問題

2014-03-13T11:04:00.000+08:00

升級 SDK Tools & ADT 22.6 後，從 Eclipse 輸出 Signed APK 可能出現以下錯誤:
Error: Unable to access jarfile ..\lib\proguard.jar

看起來是路徑有問題找不到 proguard.jar，解決方法如下:
到 SDK 中修改 proguard.bat 檔內容，proguard.bat 檔的位置如下:
yourSDK\tools\proguard\bin\proguard.bat

將 proguard.bat 裡面的這行

java -jar "%PROGUARD_HOME%"\lib\proguard.jar %*

修改成 proguard.jar 的絕對路徑 (SDK 路徑請依您安裝而定)

java -jar C:\yourSDK\tools\proguard\lib\proguard.jar %*

改好後再嘗試輸出 Signed APK 應該就會正常了~

參考資料:
https://code.google.com/p/android/issues/detail?id=66733

升級 SDK Tools & ADT 22.2 後無法創建新專案的解法

2013-09-19T17:16:00.000+08:00

#此問題已經在 22.2.1 版被修正，請直接用 SDK Manager 更新即可。

又來了~
前幾天有升級 SDK Tools & ADT 到 22.2 的開發者，應該會發現怎麼無法建立新專案了?
當建立新專案到最後一步時，會出現下面這個畫面:

Unsupported template dependency: Upgrade your Android Eclipse plugin

This template depends on the Android Support library which is either not installed or the template depends on a more recent version than the one you have installed.
Required version:
Installed version: 18

真是令人摸不著頭緒，不是才剛更新的嗎...
而且不管按 Install/Upgrade 或 Check Again 都沒效

查了一下，又有人包了。
https://code.google.com/p/android/issues/detail?id=60149#c55
不過他也提供了解決方案，只要用上面連結中 #55 樓提供的 activities.zip 壓縮檔，解開後置換掉 sdk/tools/templates/activities 目錄就可以了!

使用 <uses-feature> 的注意事項

2013-08-13T18:26:00.003+08:00

<uses-feature> 最早是在 Android 1.6 SDK (API Level 4) 中出現的，他的用途是用來宣告 App 會使用到哪些軟硬體功能(比如 Camera、Bluetooth、OpenGL ES version...)。不過事實上系統本身並不會去檢查這些設定，但 Google Play 確會用這些設定去過濾要呈現哪些 App 給使用者。

比如說我宣告了下面這行，表示我會使用到 Camera 功能。這樣 Google Play 就不會將我的 App 顯示在沒有 Camera 的裝置上。

<uses-feature android:name="android.hardware.camera" />

不過後來在 Android 2.0 SDK (API Level 5) 中，<uses-feature> 多了一個屬性叫 android:required。當某功能在 App 中是必要時需設定為 true，若是非必要時則設成 false。咦?...若是不需要的話，我直接省略 <uses-feature> 不是更省事嗎?

在看完落落長的開發者文件後才瞭解，嚴格來說，每個 App 都應該要清楚宣告哪些功能是必要或非必要。但因為種種原因，開發者可能忽略或未正確宣告。所以 Google Play 除了檢查 <uses-feature> 外，還會參考 <uses-permission> 的設定。當有設定 <uses-permission> 時， Google Play 會假定相關的功能是必要的，並加入過濾。

舉例來說，我的 App 會使用到 Camera，但不是必要的。而我只宣告了 Camera 的 <uses-permission>，卻忽略了 <uses-feature>。

<uses-permission android:name="android.permission.CAMERA" />

此時 Google Play 發現了這個 <uses-permission>，便會將 Camera 視為必要而進行過濾，沒有 Camera 的裝置就看不到我的 App 了，這樣跟我想要的結果不同。

該怎麼改善呢? 只要加上 Camera 的 <uses-feature>，並把 android:required 設成 false 即可。這樣 Google Play 就不會進行 Camera 的過濾。( <uses-feature> 的優先程度高於 <uses-permission> )

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" android:required="false" />

這麼一來，我的 App 既取得了 Camera 權限，而且在沒有 Camera 的裝置上也不會被過濾掉。

在 Eclipse 中將 Android SDK Tools 與 ADT 降回舊版的方法

2013-06-25T20:34:00.002+08:00

一般來說新版本都會解決舊版的 Bug 或添加新功能，但有時新功能尚未穩定前反而會產生原先沒有的問題。而當 Android SDK Tools 與 ADT 發生這種狀況時該如何將它們降回舊版呢? 可以參考以下的做法:
(環境 Windows 7 + Eclipse Juno SR2)

Android SDK Tools的部分
1. 到您的 Android SDK 路徑底下，把 tools 與 platform-tools 刪除(或更改名稱)。
2. 參考這邊的資料，決定你想回復的版本。
3. 接著到下面的連結下載 SDK Tools (底下以 r21.1 為例，請自行修改欲下載的版本號)
http://dl-ssl.google.com/android/repository/tools_r21.1-windows.zip
4. 將步驟3下載的壓縮檔解開到 Android SDK 路徑底下。
5. 開啟 Eclipse 並打開 Android SDK Manager，可以發現 Android SDK Tools 版本已經降回 21.1。
(Android SDK Platform-tools 可能需要重安裝，直接透過 Android SDK Manager 安裝即可。)

ADT的部分
1. 開啟 Eclipse -> Help -> Eclipse Marketplace -> Installed，把 Android Development Tools for Eclipse 選擇 Uninstall -> Finish。

2. 參考這邊的資料，決定你想回復的版本。
3. 接著到下面的連結下載 ADT (底下以 r21.1.0 為例，請自行修改欲下載的版本號)
http://dl.google.com/android/ADT-21.1.0.zip
4. Eclipse -> Help -> Install New Software -> Add -> Archive -> 選擇步驟3下載的壓縮檔安裝即可。
5. 安裝完畢，Eclipse -> Help -> About Eclipse -> 選擇 Android 相關圖示，可以發現 ADT 版本已經降回 21.1.0。

Android Studio 在滑鼠移動到函式時顯示說明

2013-05-23T21:48:00.001+08:00

在 Android Studio 裡要看函式說明可以點選了函式之後按 Ctrl+Q，而要像 Eclipse 一樣當滑鼠移動到函式時自動顯示的話則必須另外設定:

1. 開啟 Settings (Ctrl+Alt+S)
2. 選擇 IDE Settings -> Editor
3. 在 Other 勾選 Show quick doc on mouse move 即可(並可以設定滑鼠停留多久才顯示說明)。

Android Studio 如何調整字型大小

2013-05-23T21:20:00.002+08:00

Android Studio版本：2.3.3

1. 開啟設定頁 (Mac: Android Studio -> Preferences) (Windows: File -> Settings)
2. 選擇 Editor -> Colors & Fonts -> Font
3. 可以看到有兩個預設的 Scheme (Default & Darcula)，但此時這邊的 Size 跟 Font 都無法調整。請先點選 Save As... 建立一個你自己 Scheme，輸入自訂名稱後按 OK。

4. 此時 Scheme 會變為你剛建立的，而 Size 跟 Font 也都可以調整了^^