Android多个警报的问题

Question

我必须为我的应用程序创建多个警报。 这是我的代码行：

public class NotificationAdministrationManager {

    private Context context;

    public NotificationAdministrationManager(Context context) {
        this.context = context;
    }

    public void setAlarm(int cellId, Long timeStamp, String title, String message) {
        AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(context, MyReceiverAdministration.class);
        intent.putExtra(SettingsData.TAG_TITLE_NOTIFICATION, title);
        intent.putExtra(SettingsData.TAG_MESSAGE_NOTIFICATION, message);
        intent.putExtra(SettingsData.TAG_ID_NOTIFICATION, cellId);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, cellId, intent, PendingIntent.FLAG_NO_CREATE);
        am.set(AlarmManager.RTC_WAKEUP, timeStamp, pendingIntent);
    }

    public void removeAlarm(int cellId) {
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent myIntent = new Intent(context,
                MyReceiverAdministration.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(
                context, cellId, myIntent, PendingIntent.FLAG_NO_CREATE);
        alarmManager.cancel(pendingIntent);
    }
}


    public class MyReceiverAdministration extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.hasExtra(SettingsData.TAG_TITLE_NOTIFICATION) &&
                intent.hasExtra(SettingsData.TAG_MESSAGE_NOTIFICATION) &&
                intent.hasExtra(SettingsData.TAG_ID_NOTIFICATION)) {
            String title = intent.getStringExtra(SettingsData.TAG_TITLE_NOTIFICATION);
            String message = intent.getStringExtra(SettingsData.TAG_MESSAGE_NOTIFICATION);
            int cellId = intent.getIntExtra(SettingsData.TAG_ID_NOTIFICATION, 0);
            NotificationManager mNotifyMgr =
                    (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.mipmap.ic_launcher))
                    .setContentTitle(title)
                    .setContentText(message)
                    .setOngoing(false)
                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                    .setAutoCancel(true);
            Intent i = new Intent(context, MainActivity.class);
            PendingIntent pendingIntent =
                    PendingIntent.getActivity(
                            context,
                            cellId,
                            i,
                            PendingIntent.FLAG_NO_CREATE
                    );
            mBuilder.setLights(0x6098CF, 1000, 2000);
            //mBuilder.setSound(yourSoundUri);
            mBuilder.setContentIntent(pendingIntent);
            mNotifyMgr.notify(12345, mBuilder.build());
            Vibrator v = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
            v.vibrate(1000);
        }
    }
}

for (MyObject object : list) {
        manager.removeAlarm(object.getId());
        formatter.setCell(cell);
        manager.setAlarm(object.getId(), object.getBegin(), formatter.formatTitle(), formatter.formatMessage());
    }

一些有用的信息； object.getId（）是一个唯一值，但可以在应用程序中多次使用，但在该循环中只能使用一次。 我现在得到的是，在所有警报的设置结束几秒钟后，我得到的是最后一条通知。 我的代码有什么问题？

Answer 1

我曾经处理过多个警报非常棘手。 代码上的问题是，您不会在Notification Manager上传递唯一的ID，因为结果将覆盖所有通知。

mNotifyMgr.notify(unique_id_here, mBuilder.build());

这是我在多个通知警报上的实现示例，其中我为每个警报设置了唯一的请求代码，并在Notification Manager上设置了唯一的ID。

 public static void setAlarmManager(ArrayList<MedicationPlanEvent> events,Context context){
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

    Calendar calendar = Calendar.getInstance();

    for(int i=0; i<events.size(); i++){
        MedicationPlanEvent medicationPlan = events.get(i);
        int request_code = 100 * medicationPlan.getId();

        calendar.setTimeInMillis(System.currentTimeMillis());
        if(medicationPlan.getTime().compareTo(TimeManager.getCurrentTime())<=0) calendar.add(Calendar.DAY_OF_MONTH,1);

        String time_model[] = medicationPlan.getTime().split(":");
        calendar.set(Calendar.HOUR_OF_DAY,Integer.parseInt(time_model[0]));
        calendar.set(Calendar.MINUTE,Integer.parseInt(time_model[1]));


        int stop_request_code = request_code * 10;
        Intent startNotificationAlarm = new Intent(context, NotificationService.class);
        startNotificationAlarm.putExtra("Medicine", medicationPlan.getMedicine());
        startNotificationAlarm.putExtra("ID",medicationPlan.getId());
        startNotificationAlarm.putExtra("unique_id",request_code);
        PendingIntent pendingNotificationIntent = PendingIntent.getService(context, request_code, startNotificationAlarm, PendingIntent.FLAG_CANCEL_CURRENT);

        alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
                AlarmManager.INTERVAL_DAY, pendingNotificationIntent);

        Intent stopNotificationAlarm = new Intent(context, StopAlarmReceiver.class);
        Bundle bundle = new Bundle();
        bundle.putInt("Notification", request_code);
        bundle.putInt("MedicationPlanID",medicationPlan.getId());
        bundle.putInt("StopNotification", stop_request_code);
        stopNotificationAlarm.putExtras(bundle);
        PendingIntent pendingStopNotificationIntent = PendingIntent.getBroadcast(context,stop_request_code, stopNotificationAlarm, PendingIntent.FLAG_CANCEL_CURRENT);

        int interval = 1000 * 60 * 60 * 24 * medicationPlan.getTotal_days();
        calendar.setTimeInMillis(calendar.getTimeInMillis() + interval);
        alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingStopNotificationIntent);

    }

}

通知服务

 @Override
protected void onHandleIntent(Intent intent) {
    String medicine = intent.getExtras().getString("Medicine");
    int id = intent.getExtras().getInt("ID");
    int unique_id = intent.getExtras().getInt("unique_id");
    //Every time the notification runs update the remaining days
    RealmDatabase db = new RealmDatabase(this);
    int days_left = db.updateMedicationPlanRemainingDays(id);


    String title=medicine;
    if(days_left!=-1){
        if(days_left == 0) title += " ("+getString(R.string.last_day)+")";
        else title += " (" +days_left+" "+getString(R.string.days_left)+")";
    }

    Log.d("Notification id ",unique_id+"");
    //on notification click  , launch recurrent transactions
    Intent contentIntent = new Intent(this, OverviewActivity.class);
    contentIntent.putExtra("flag",id);
    PendingIntent pIntent = PendingIntent.getActivity(this, unique_id, contentIntent, 0);


    //done action button
    Intent doneIntent = new Intent(this, NotificationDoneReceiver.class);
    doneIntent.putExtra("id", id);
    doneIntent.putExtra("notification_id",unique_id);
    PendingIntent donePendingIntent = PendingIntent.getBroadcast(this, (unique_id * 16), doneIntent, 0);

    //notification builder
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this);

    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        builder.setSmallIcon(R.drawable.logo_white);
    } else {
        builder.setSmallIcon(R.drawable.logo);
    }

    //create the notification
    Notification n = builder
            //set title
            .setContentTitle(title)

            .setPriority(NotificationCompat.PRIORITY_MAX)

            .setWhen(0)
                    //set content
            .setContentText(getString(R.string.time_for_medicine) + " " + medicine)
                    //set intent to launch on content click
            .setContentIntent(pIntent)
                    //cancel notification on click
            .setAutoCancel(true)
                    //add the actions
            .addAction(R.drawable.ic_done, getString(R.string.took_it), donePendingIntent)

            .build();

    //Sound and vibrate
     n.defaults |= Notification.DEFAULT_VIBRATE;
     n.defaults |= Notification.DEFAULT_SOUND;

    //notification manager
    NotificationManager notificationManager =
            (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

    //create the notification
    notificationManager.notify(unique_id, n);


}