Android设备的音量键检测

Question

Is there any way to detect the existence of the VOLUMN keys for android devices? Some features should be hidden if there no VOLUMN keys. Appreciate for any help^.^

Answer 1

For Volume Keys use KEYCODE_VOLUME_DOWN and KEYCODE_VOLUME_UP

@Override
 public boolean onKeyLongPress(int keyCode, KeyEvent event) {
     if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) 
     {
       // to your stuff here
       return true;
     }
 return super.onKeyLongPress(keyCode, event);
 }