[Android] 可以 count Jar 檔案的 method 數量的 script

dx --dex --output=temp.dex $1
cat temp.dex | head -c 92 | tail -c 4 | hexdump -e '1/4 "%d\n"'
rm temp.dex

dx 要用
/home/charles_lo/Program/adt-bundle-linux-x86_64-20140702/sdk/build-tools/21.1.1
不要用 apt-get 去安裝
實測效果

[Android] Eclipse ADT budle download link

最近eclipse ADT bundle download link 官方網站已經找不到了，所以備份一下連結

linux 64 bit vm: http://dl.google.com/android/adt/adt-bundle-linux-x86_64-20140702.zip
linux 32 bit vm: http://dl.google.com/android/adt/adt-bundle-linux-x86-20140702.zip
mac: http://dl.google.com/android/adt/adt-bundle-mac-x86_64-20140702.zip
win32: http://dl.google.com/android/adt/adt-bundle-windows-x86-20140702.zip
win64: http://dl.google.com/android/adt/adt-bundle-windows-x86_64-20140702.zip

還有一個更新失敗的 issue 連結
https://code.google.com/p/android/issues/detail?id=73102

[Android][Proguard]android 程序代码混淆 proguard 脚本 proguard.cfg

从script中可以看到，混淆中保留了继承自Activity、Service、Application、BroadcastReceiver、ContentProvider等基本组件。
并保留了所有的Native变量名及类名，所有类中部分以设定了固定参数格式的构造函数，枚举等等。(详细信息请参考<proguard_path>/examples中的例子及注释。)
2 在工程的"default.properties"中添加这样一句话“proguard.config=proguard.cfg”


打包签名后的.apk就是混淆的，其实我们只要做一步就可以了就是在"default.properties"中添加这样一句话“proguard.config=proguard.cfg”就可以了。

出现错误：
[INFO] Warning: there were 294 unresolved references to classes or interfaces.
[INFO]          You may need to specify additional library jars (using '-library
jars').
[INFO] Warning: there were 3 unresolved references to program class members.
      You should consider explicitly keeping the mentioned class members
      (using '-keep' or '-keepclassmembers').
[INFO]          Your input classes appear to be inconsistent.
[INFO]          You may need to recompile them and try again.
[INFO]          Alternatively, you may have to specify the option
[INFO]          '-dontskipnonpubliclibraryclassmembers'.
[INFO] java.io.IOException: Please correct the above warnings first.
[INFO]  at proguard.Initializer.execute(Initializer.java:321)
[INFO]  at proguard.ProGuard.initialize(ProGuard.java:211)
[INFO]  at proguard.ProGuard.execute(ProGuard.java:86)
[INFO]  at proguard.ProGuard.main(ProGuard.java:492)

解决方法如下：解决方法找到了，在proguard.cfg文件中加入-ignorewarnings就可以跳过这个错误了

[ubuntu] Linux 上的編輯器 Geany

sudo apt-get install geany
 可以當作linux 上的 UltraEditor 的替代品

[Android]如何整合 Instagram

1. 透過 PackageManager檢查 Instagram package 存不存在

private boolean verificaInstagram(){
    boolean instalado = false;

    try {
        ApplicationInfo info = getPackageManager().getApplicationInfo("com.instagram.android", 0);
        instalado = true;
    } catch (NameNotFoundException e) {
        instalado = false;
    }
        return instalado;
    }

2. 透過 startActivity to start relative activity

Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
shareIntent.setType("image/*");       // 不知道有沒有 video

//以下從 MediaStore 拿圖片名字
final ContentResolver cr = getContentResolver();
final String[] p1 = new String[] {
    MediaStore.Images.ImageColumns._ID, MediaStore.Images.ImageColumns.TITLE, MediaStore.Images.ImageColumns.DATE_TAKEN
};
Cursor c1 = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, p1, null, null, p1[1] + " DESC");

if (c1.moveToFirst() ) {
    Log.i("Teste", "last picture (" + c1.getString(1) + ") taken on: " + new Date(c1.getLong(2)));
}

Log.i("Caminho download imagem", "file://"+Environment.getExternalStorageDirectory()+ "/Tubagram/"  + c1.getString(1) + ".png");

//以上從 MediaStore 拿圖片名字
shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"+Environment.getExternalStorageDirectory()+ "/Tubagram/" + c1.getString(1)+".png"));
shareIntent.setPackage("com.instagram.android");

c1.close();

startActivity(shareIntent);

出處：
http://stackoverflow.com/questions/16864138/how-to-send-a-photo-to-instagram-using-my-android-app

[Android][UI] 如何得到 statusbar 高度

寫 android GUI 程式的時候，偶爾會需要得到  status bar 的高度，這時候最好直接從系統去問出來，具體的代碼如下。

public int getStatusBarHeight() {
int result = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = getResources().getDimensionPixelSize(resourceId);
}
return result;
}