（andorid）屏蔽home键和back键的方法，以及调用振动的方法

//屏蔽home键

@Override

public void onAttachedToWindow() {

    this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);

    super.onAttachedToWindow();

}

 

//屏蔽掉Back键
 public boolean onKeyDown(int keyCode ,KeyEvent event){
  if(event.getKeyCode() == KeyEvent.KEYCODE_BACK)
   return true ;
  else
   return super.onKeyDown(keyCode, event);
 }

 

//调用系统振动

Vibrator vibrator = (Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);

//振动时长

vibrator.vibrate(200);