当屏幕在 android 10 中锁定时，setFullScreenIntent 不起作用

Question

我正在尝试在闹钟响起时使用 android 10 中的 NotificationCompat设置fullScreentIntent，但即使闹钟响起时 fullScreenIntent 也没有显示。

我在清单文件中添加了USE_FULL_SCREEN_INTENT。我尝试获取部分唤醒锁定，禁用键盘锁，但仍然无法使用全屏意图。

AndroidManifest.xml

<uses-permission android:name="com.android.alarm.permission.SET_ALARM" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
<uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />

警报广播接收器.java

public class AlarmBroadcastReceiver extends BroadcastReceiver {

    private static final String TAG = "AlarmBroadcastReceiver";
    public static final String STOP_CHANNEL_ID = "Location Alert";
    public static final int ALARM_NOTIFICATION_ID = 2;

    public static MediaPlayer mp;
    public static Vibrator vibrator;

    private boolean isVibrationEnabled = false;
    KeyguardManager keyguardManager;

    @Override
    public void onReceive(Context context, Intent intent) {

        showStopNotification(context);

        long[] mVibratePattern = new long[]{0, 400, 400, 400, 400, 400, 400, 400};
        final int[] mAmplitudes = new int[]{0, 128, 0, 128, 0, 128, 0, 128};

        isVibrationEnabled = intent.getExtras().getBoolean(LocationAlertService.IS_VIBRATE);

        mp = MediaPlayer.create(context, R.raw.ring1);
        mp.setLooping(true);
        mp.start();

        if(isVibrationEnabled) {
            vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                vibrator.vibrate(VibrationEffect.createWaveform(mVibratePattern, mAmplitudes, 0));
            } else {
                //deprecated in API 26
                vibrator.vibrate(mVibratePattern, 3);
            }
        }

    }

    public void showStopNotification(Context context) {
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            NotificationChannel stopServiceChannel = new NotificationChannel(
                    STOP_CHANNEL_ID,
                    "Location Alert Channel",
                    NotificationManager.IMPORTANCE_DEFAULT
            );

            NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
            notificationManager.createNotificationChannel(stopServiceChannel);

            Intent wakeupIntent = new Intent(context, WakeUpActivity.class);
            wakeupIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            PendingIntent wakeupPendingIntent = PendingIntent.getActivity(context, 0, wakeupIntent, PendingIntent.FLAG_UPDATE_CURRENT);

            Intent mainIntent = new Intent(context, MainActivity.class);
            wakeupIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            PendingIntent mainPendingIntent = PendingIntent.getActivity(context, 0, mainIntent, PendingIntent.FLAG_UPDATE_CURRENT);

            PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, new Intent(), 0);
            keyguardManager = (KeyguardManager) context.getSystemService(KEYGUARD_SERVICE);

            PowerManager powerManager = (PowerManager) context.getSystemService(POWER_SERVICE);
            PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK
                    | PowerManager.ACQUIRE_CAUSES_WAKEUP
                    | PowerManager.ON_AFTER_RELEASE,
                    "MyApp::" + TAG);
            wakeLock.acquire(10000);

            NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context, STOP_CHANNEL_ID)
                    .setSmallIcon(R.drawable.location_alerter)
                    .setContentTitle(context.getResources().getText(R.string.stop_location_alert))
                    .setContentText(context.getResources().getText(R.string.click_to_stop_activity))
                    .setPriority(NotificationCompat.PRIORITY_HIGH)
                    .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                    .setCategory(NotificationCompat.CATEGORY_CALL)
                    .setFullScreenIntent(wakeupPendingIntent, true);

            Notification alarmNotification = notificationBuilder.build();

            notificationManager.notify(0, alarmNotification);
            wakeLock.release();
        }
        else {
            Intent wakeIntent = new Intent(context, WakeUpActivity.class);
            wakeIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(wakeIntent);
        }
    }
}

在onReceive() 上，我调用showStopNotification()来检查设备是否在 android 10 上运行。如果它在 android 10 上运行，我将尝试获取唤醒锁并使用NotificationCompat.builder 的 setFullScreenIntent()启动活动。我什至将通知优先级设置为高。

我不知道为什么闹钟响起后不显示fullScreenIntent。声音和振动正在工作，但没有用户界面来停止警报。预先感谢您帮助我。

Answer 1

尝试提高您的通知渠道 (STOP_CHANNEL_ID) 优先级NotificationManager.IMPORTANCE_HIGH