Question

我希望从上午10点到晚上22点每隔三小时显示一次通知，但我的应用程序也会在用户打开手机时显示通知。为了在每次触发通知过程时解决此问题，我在共享首选项中设置当前时间加3小时。我使用这个时间值来触发我的重复警报，但它似乎无法正常工作。

如何仅在重复闹钟的预定时间（每三个小时）显示通知，并在有人重启手机时停止发送通知？

我的代码如下：

一个广播接收器，当用户重新启动手机时，它正在调用以下AlarmService：

public class AlarmService extends Service {


    private static final String TAG = "MyService";

    @Override
    public void onStart(Intent intent, int startid) {

        Calendar calendar  ;

            int sp= SharedPrefs.getDefaults("TIME", this);

    Intent i = new Intent(this, NotificationBarAlarm.class);
    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent pi = PendingIntent.getBroadcast(this, 0, i,                   PendingIntent.FLAG_UPDATE_CURRENT);

     calendar = Calendar.getInstance();

     calendar.set(Calendar.HOUR_OF_DAY, sp);
     calendar.set(Calendar.MINUTE, 00); 
     calendar.set(Calendar.SECOND, 00);


         AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
         am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),3*60*60*1000 , pi);

    }

    @Override
    public IBinder onBind(Intent intent) {
    return null;
    }

    @Override
    public void onDestroy() {
    Toast.makeText(this, "My Service stopped", Toast.LENGTH_LONG).show();
    Log.d("TAG", "onDestroy");
    }

}

将Intent发送到以下广播接收器：

public class NotificationBarAlarm extends BroadcastReceiver {

    NotificationManager notifyManager;

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

        Log.d("NotificationAlarm", "onReceive");


        Time time = new Time();
        long currenttimeMilliseconds = System.currentTimeMillis();
        time.set(currenttimeMilliseconds);
        int t = time.hour;


        long updatedTime= currenttimeMilliseconds + 10800000;

        Time nextalarmmill = new Time();
        nextalarmmill.set(updatedTime);
        int nextalarm = nextalarmmill.hour;


        SharedPrefs.setDefaults("TIME", nextalarm, context);


        Log.d("UPDATE TIME", "The next alarm is set at"+" "+ nextalarm);


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

        if (t >= 10 && t <= 22) {

            // This Activity will be started when the user clicks the notification
            // in the notification bar
            Intent notificationIntent = new Intent(context,
                    AlarmReceiverActivity.class);
            PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
                    notificationIntent, 0);
            Notification notif = new Notification(R.drawable.ic_launcher,
                    "A new notification just popped in!",
                    System.currentTimeMillis());

            // sound when the notification shows up.
            Uri alarmSound = RingtoneManager
                    .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            notif.sound = alarmSound;
            notif.setLatestEventInfo(context, "Questionnaire",
                    "Please fill it up", contentIntent);

            notifyManager.notify(1, notif);

        }


    }

}


Here is the code of the Shared Preferences:

public class SharedPrefs {


    public static void setDefaults(String key, int value, Context context) {

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        SharedPreferences.Editor editor = prefs.edit();
        editor.putInt(key, value);
        editor.commit();

    }

    public static int getDefaults(String key, Context context) {

        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
        return preferences.getInt(key, 10);

    }

Answer 1

在您的代码中，当设置Alarm时，您首先要求Alarm立即关闭。

试试这个 am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis() + 3*60*60*1000, 3*60*60*1000 , pi);

Android：每当手机重新启动时都会发送通知

1 个答案: