像“主页”按钮一样覆盖“电源”按钮

Question

好吧，我正在做一些事情，我想禁用设备的所有硬按钮。

硬按钮，例如电源，主页，提高音量，降低音量，搜索，返回。

我已经成功覆盖了此处几乎所有按钮（电源除外）。

因此，我只希望大家看到并请分享一些想法，以便我能摆脱它。

我正在以中长按 Power 键事件onDispatchKeyEvent()，这与我想捕捉到同一事件的快捷方式相同。此外，在按下电源时，我还尝试通过获取of 来停止Screen，我成功接收了它，但我无法处理它。BroadcastSCREEN_OFF

谢谢。

然后，我创建了一个ReceiverScreen来接收屏幕开/关的广播

ReceiverScreen.java

public class ReceiverScreen extends BroadcastReceiver {

    public static boolean wasScreenOn = true;

    @Override

    public void onReceive(Context context, Intent intent) {

        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {

            // do whatever you need to do here

            wasScreenOn = false;

        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {

            // and do whatever you need to do here

            wasScreenOn = true;

        }

    }

}

DisableHardButton.java

public class DisableHardButton extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

    IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);

    filter.addAction(Intent.ACTION_SCREEN_OFF);

    BroadcastReceiver mReceiver = new ReceiverScreen();

    registerReceiver(mReceiver, filter);

    }

@Override

    protected void onPause() {

        // when the screen is about to turn off

        if (ScreenReceiver.wasScreenOn) {

            // this is the case when onPause() is called by the system due to a screen state change

            System.out.println("SCREEN TURNED OFF");

    } else {

        // this is when onPause() is called when the screen state has not changed

    }

    super.onPause();

}

@Override

protected void onResume() {

    // only when screen turns on

    if (!ScreenReceiver.wasScreenOn) {

        // this is when onResume() is called due to a screen state change

        System.out.println("SCREEN TURNED ON");

    } else {

        // this is when onResume() is called when the screen state has not changed

    }

    super.onResume();

}

}

Answer 1

与所有答案相反..检查一下：@Overridepublic boolean dispatchKeyEvent(KeyEvent event) {        if (event.getKeyCode() == KeyEvent.KEYCODE_POWER) {                Log.i("", "Dispath event power");                Intent closeDialog = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);                sendBroadcast(closeDialog);                return true;        }        return super.dispatchKeyEvent(event);}它能做什么：每当用户按下电源按钮时。我们取消了对话，甚至看不到它！:) 这对我有用。（在note2上测试）

Answer 2

这是我所做的：（1）创建一个接收器类：public class ScreenReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        String action = intent.getAction();        switch (action) {            case Intent.ACTION_SCREEN_OFF:                BaseActivity.unlockScreen();                break;            case Intent.ACTION_SCREEN_ON:                // and do whatever you need to do here                BaseActivity.clearScreen();        }    }}（2）上面调用的两个方法如下所示：public static void unlockScreen () {    if (current == null) return;    Log.i( Constants.TAG, "Turning on screen ... " );    Window window = current.getWindow();    window.addFlags( WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD );    window.addFlags( WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED );    window.addFlags( WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON   );}public static void clearScreen () {    if (current == null) return;    Log.i( Constants.TAG, "Clearing screen flag when on ... " );    Window window = current.getWindow();    window.clearFlags( WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD );    window.clearFlags( WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED );    window.clearFlags( WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON   );}private static BaseActivity current;@Overrideprotected void onResume () {    current = this;}（3）在主要活动类onCreate（）方法中注册接收者：    IntentFilter filter = new IntentFilter( Intent.ACTION_SCREEN_ON );    filter.addAction( Intent.ACTION_SCREEN_OFF );    registerReceiver(new ScreenReceiver(), filter);