android 4.4 截屏功能,android4.4 添加快捷开关（以截屏为例）

最新推荐文章于 2021-05-28 15:32:25 发布

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最新推荐文章于 2021-05-28 15:32:25 发布

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文章标签： android 4.4 截屏功能

本文介绍了在Android 4.4系统中实现截屏功能的具体步骤，包括在config.xml、strings.xml等文件中添加相关配置，添加图标、单布局文件，以及在QuickSettings.java中添加相应Java代码和调用代码，最后给出了系统编译后的效果示例。

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A，frameworks\base\packages\SystemUI\res\values\config.xml

添加： true

B，frameworks\base\packages\SystemUI\res\values\strings.xml

添加：Screen shot

C，frameworks\base\packages\SystemUI\res\values-zh-rCN\strings.xml

添加：屏幕截图

D，添加图标

①frameworks\base\packages\SystemUI\res\drawable-hdpi\ic_qs_screen_shot.png

②frameworks\base\packages\SystemUI\res\drawable-mdpi\ic_qs_screen_shot.png

③frameworks\base\packages\SystemUI\res\drawable-xhdpi\ic_qs_screen_shot.png

E，添加单布局文件:

frameworks\base\packages\SystemUI\res\layout\quick_settings_tile_screen_shot.xml

F，添加相应java代码：

frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\QuickSettings.java

importandroid.content.ServiceConnection;importandroid.os.IBinder;importandroid.os.Message;import android.os.Messenger;

再在addTemporaryTiles() 方法里面的最后添加相应代码:

///////////////////////////////////////_1126///////////////////////////////////////////////screen shot

QuickSettingsTileView ScreenShotTile =(QuickSettingsTileView)

inflater.inflate(R.layout.quick_settings_tile, parent,false);

ScreenShotTile.setContent(R.layout.quick_settings_tile_screen_shot, inflater);

ScreenShotTile.setOnClickListener(newView.OnClickListener() {

@Overridepublic voidonClick(View v) {

Log.i(TAG,"---------------------------------screen shot is clicked.");//takeScreenshot();

mBar.collapseAllPanels(true);

mHandler.removeCallbacks(mScreenshotClick);

mHandler.postDelayed(mScreenshotClick,500);

}

});if(mContext.getResources().getBoolean(R.bool.quick_settings_show_screenshot)) {

parent.addView(ScreenShotTile);

}

随后在外部添加相应调用代码:

/*******************_1126*********************************/

//add by xxx, for screen shot in quick settings.

private final Runnable mScreenshotClick = newRunnable() {public voidrun() {

takeScreenshot();

}

};private final Object mScreenshotLock = newObject();private ServiceConnection mScreenshotConnection = null;private final Runnable mScreenshotTimeout = newRunnable() {

@Overridepublic voidrun() {synchronized(mScreenshotLock) {if (mScreenshotConnection != null) {

mContext.unbindService(mScreenshotConnection);

mScreenshotConnection= null;

}

};//Assume this is called from the Handler thread.

private voidtakeScreenshot() {

Log.i("bright", "start take screen shot.");synchronized(mScreenshotLock) {if (mScreenshotConnection != null) {return;

}

ComponentName cn= new ComponentName("com.android.systemui","com.android.systemui.screenshot.TakeScreenshotService");

Intent intent= newIntent();

intent.setComponent(cn);

ServiceConnection conn= newServiceConnection() {

@Overridepublic voidonServiceConnected(ComponentName name, IBinder service) {synchronized(mScreenshotLock) {if (mScreenshotConnection != this) {return;

}

Messenger messenger= newMessenger(service);

Message msg= Message.obtain(null, 1);final ServiceConnection myConn = this;

Handler h= newHandler(mHandler.getLooper()) {

@Overridepublic voidhandleMessage(Message msg) {synchronized(mScreenshotLock) {if (mScreenshotConnection ==myConn) {

mContext.unbindService(mScreenshotConnection);

mScreenshotConnection= null;

mHandler.removeCallbacks(mScreenshotTimeout);

}

};

msg.replyTo= newMessenger(h);

msg.arg1= msg.arg2 = 1;try{

messenger.send(msg);

}catch(RemoteException e) {

}

@Overridepublic voidonServiceDisconnected(ComponentName name) {}

};if(mContext.bindService(

intent, conn, Context.BIND_AUTO_CREATE)) {

mScreenshotConnection=conn;

mHandler.postDelayed(mScreenshotTimeout,10000);

}

}/**************************************************/

系统编译后的最终效果如下图(找了个关于SIM的图标代替)：

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原文：http://www.cnblogs.com/Miami/p/4998441.html