打電話按兩下電源按鈕

Question

對於android.I來說我很新，我想知道是否可以在按兩次電源按鈕時撥打指定號碼。

Answer 1

是的，它是可能的，你可以覆蓋電源按鈕的點擊事件是這樣的：

long last_click = 0; 

    @Override 
    public boolean dispatchKeyEvent(KeyEvent event) { 
     if (event.getKeyCode() == KeyEvent.KEYCODE_POWER) { 
      // Check if power button was pressed twice in last second 
      if ((System.currentTimeMillis() - last_click) <= 1000) { 
       // Make call if pressed twice 
       call(); 
       return true; 
      } 
      last_click = System.currentTimeMillis(); 
     } 
     return super.dispatchKeyEvent(event); 
    } 

    public void call() { 
     Intent callIntent = new Intent(Intent.ACTION_CALL); 
     callIntent.setData(Uri.parse("tel:" + phone)); 
     startActivity(callIntent); 
    } 

添加通話許可清單中：

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