Question

我已经和它斗争了很长一段时间了，我正在使用闹钟管理器来安排闹钟，我在我的清单文件中声明了一个接收器。当应用程序运行或在后台运行时，警报和接收器按预期工作，我无法在用户关闭应用程序后触发警报。我本质上只是想在我的应用程序中进行本地通知。没有其他＆＃34;答案＆＃34;这里有很多帮助。应用程序关闭后是否可以触发本地通知？

public static void writtenGoalsNotification(Context context) {

    final int _id = 15;

    pref = context.getSharedPreferences("userpref", 0);

    Notification notification = getNotification("Don't forget to write your daily goals!", context, "none", "Goals");
    Intent notificationIntent = new Intent(context, NotificationReceiver.class);

    notificationIntent.putExtra(NotificationReceiver.NOTIFICATION_ID, "written goals notification");
    notificationIntent.putExtra(NotificationReceiver.NOTIFICATION, notification);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_INCLUDE_STOPPED_PACKAGES);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, _id, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    Integer hour = pref.getInt(NotificationKeys.Goals.ReminderTime.hour, 10);
    Integer minute = pref.getInt(NotificationKeys.Goals.ReminderTime.minute, 0);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.HOUR_OF_DAY, hour);
    cal.set(Calendar.MINUTE, minute);
    cal.set(Calendar.MILLISECOND, 0);

    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 1000 * 60 * 60 * 24, pendingIntent);

}

这是我的接收器，

public class NotificationReceiver extends WakefulBroadcastReceiver {

public static String NOTIFICATION_ID = "notification-id";
public static String NOTIFICATION = "notification";

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

    NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

    Notification notification = intent.getParcelableExtra(NOTIFICATION);
    int id = intent.getIntExtra(NOTIFICATION_ID, 0);
    notificationManager.notify(id, notification);

    startWakefulService(context, intent);

    WakeLocker.acquire(context);
    WakeLocker.release();

}
}

这是我的清单，

  <receiver
        android:name=".Controllers.NotificationReceiver"
    </receiver>

Answer 1

广告接收器在API级别26中已弃用。你没有得到alram的主要原因是因为你正在使用的App的过程已经完成并且如果设备中的内存很少则被清除。相反，您应该使用服务，以便它具有更高的优先级。所以为此，我建议您使用BroadcastReceiver类而不是WakeupBroadcastReceiver，因为android文档说这个 - （从接收广播开始提供服务通常是不安全的，因为此时您无法保证您的应用程序处于前台，因此可以这样做。）

因此，您的设置alram的过程可能会被破坏。所以使用BroadcastReceiver。在清单中这样做

<receiver
        android:name=".NotificationReceiver"
    </receiver>

Android Studios Alarm Manager应用已关闭

1 个答案: