Android: 發送虛擬按鍵

Android: 發送虛擬按鍵

1. /**  
2.  * Send a single key event.  
3.  *  
4.  * @param event is a string representing the keycode of the key event you  
5.  * want to execute.  
6.  */  
7. private void sendKeyEvent(int keyCode) {  
8.     int eventCode = keyCode;  
9.     long now = SystemClock.uptimeMillis();  
10.     try {  
11.         KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, eventCode, 0);  
12.         KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, eventCode, 0);  
13.         (IWindowManager.Stub  
14.             .asInterface(ServiceManager.getService("window")))  
15.             .injectInputEventNoWait(down);  
16.         (IWindowManager.Stub  
17.             .asInterface(ServiceManager.getService("window")))  
18.             .injectInputEventNoWait(up);  
19.     } catch (RemoteException e) {  
20.         Log.i(TAG, "DeadOjbectException");  
21.     }  
22. }  

sendKeyEvent(KeyEvent.KEYCODE_BACK);