关闭后如何重新启用keyguard？

Question

我正在制作一个锁屏应用程序，它使用前台服务，在启动时禁用键盘守卫，在销毁时重新启用它。我可以很好地禁用它，但当服务停止时，它不会重新启用。我正在停止活动中的服务，并且我知道onDestroy()正在被调用，因为通知消失了。我在服务中的代码：

@Override
public void onDestroy() {
    isRunning = false;
    KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Service.KEYGUARD_SERVICE);
    KeyguardLock lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);
    lock.reenableKeyguard();
    stopForeground(true);  
    super.onDestroy(); 
}



@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Service.KEYGUARD_SERVICE);
    KeyguardLock lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);
    lock.disableKeyguard();

    Notification notification = new Notification(R.drawable.ic_launcher, getText(R.string.ticker_text),
            System.currentTimeMillis());
    Intent notificationIntent = new Intent(this, LockService.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
    notification.setLatestEventInfo(this, getText(R.string.notification_title),
            getText(R.string.notification_message), pendingIntent);
    startForeground(1, notification);

    return Service.START_STICKY;
}

}

Answer 1

要禁用(解锁)键盘守卫，请使用以下代码。这将创建一个新的KeyguardLock，并使用它禁用键盘守卫

KeyguardLock keyguardLock = keyguardManager.newKeyguardLock(“Keyguard_Lock_Test”);
keyguardLock.disableKeyguard();

要获取键盘守卫，请使用以下代码行释放锁。这将锁定键盘守卫，如果它首先被锁定，并且如果当前没有应用程序持有键盘守卫锁

keyguardLock.reenableKeyguard();
keyguardLock = null;