我目前正在尝试监听电源按钮是否被按下。最终我希望在电源按钮被按两次时运行一些代码,检查屏幕是锁定还是解锁状态。我目前有以下代码:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);//prevent phone from being locked
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_POWER:
{
Toast.makeText(getBaseContext(), "Power button pressed", Toast.LENGTH_LONG).show();
return true;
}
case KeyEvent.KEYCODE_MENU:
Toast.makeText(getBaseContext(), "Menu Button Pressed", Toast.LENGTH_LONG).show();
return true;
}
return super.onKeyDown(keyCode, event);
}
这段代码可以在菜单按键事件上正常弹出提示,但对于电源按键事件没有任何反应。有什么想法吗?