当Android上出现活动时解锁设备

Question

我有一个应用程序，应该解锁屏幕时，它出现。

我已经尝试了一些东西，写了一些代码，在.java文件和AndroidManifest，但它不能解锁设备。

这是我的代码；

Uri ringtone = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
    r = RingtoneManager.getRingtone(getApplicationContext(), ringtone);
    r.play();   

    /*
    PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
    WakeLock wakeLock = pm.newWakeLock((PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP), "TAG");
    wakeLock.acquire();


    KeyguardManager keyguardManager = (KeyguardManager) getApplicationContext().getSystemService(Context.KEYGUARD_SERVICE); 
    KeyguardLock keyguardLock =  keyguardManager.newKeyguardLock("TAG");
    keyguardLock.disableKeyguard(); 


    window = getWindow();
    window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
    window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
    window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
    window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

    */

    PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
    WakeLock mWakeLock = pm.newWakeLock((PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP), "MyService");
    mWakeLock.acquire();
    mWakeLock.release();

    Window window = getWindow();
    window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);

这段代码有什么问题？

你能帮帮我吗？

我已经试过你提供的所有答案，但还是没有成功。

Answer 1

您需要3个标志：FLAG_DISMISS_KEYGUARD、FLAG_SHOW_WHEN_LOCKED和FLAG_TURN_SCREEN_ON

import android.view.WindowManager.LayoutParams;
private Window window;

将这个添加到你的onCreate()中

    window = this.getWindow();
    window.addFlags(LayoutParams.FLAG_DISMISS_KEYGUARD);
    window.addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED);
    window.addFlags(LayoutParams.FLAG_TURN_SCREEN_ON);

或者使用onResume()方法，它对我有效=)

protected void onResume() {
    super.onResume();
    window = this.getWindow();
    window.addFlags(LayoutParams.FLAG_DISMISS_KEYGUARD);
    window.addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED);
    window.addFlags(LayoutParams.FLAG_TURN_SCREEN_ON);
}