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POHow to limit the number of notifications being sent by a service in android?
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  1. POHow to limit the number of notifications being sent by a service in android?
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    copied!<p>My Android project gives location-based reminders.In a service,I am calculating the distance from the current location to all the locations in the database. If the distance is less than 500m,a notification is given to the user. The problem is that, since the calculation of distance and sending of notifications is being done within the service, the notifications keep coming repeatedly for the same location if the distance is&lt;500m. Ultimately the app has to be force closed. Here is the onLocationChanged method of the service class:</p> <pre><code> public void onLocationChanged(Location location) { double lat = location.getLatitude(),lng = location.getLongitude(),dblat = 0,dblng=0; Location currentlocation = new Location("current Location"); currentlocation.setLatitude(lat); currentlocation.setLongitude(lng); int NOTIFICATION_ID = 1; String ns = Context.NOTIFICATION_SERVICE; String title,date,today; NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns); Calendar cal=Calendar.getInstance(); today = String.valueOf(cal.get(Calendar.YEAR)) + "-" + String.valueOf(cal.get(Calendar.MONTH)) + "-" + String.valueOf(cal.get(Calendar.DAY_OF_MONTH)); SQLiteDatabase database = new SQLiteHelper(getApplicationContext()).getWritableDatabase(); Cursor c = database.rawQuery("select title,reminderdate,latitude,longitude from Reminder where type=1", null); int icon = R.drawable.ic_launcher; if(c.getCount()&gt;0) { //System.out.println("c not null"); c.moveToFirst(); while(!c.isAfterLast()) { title=c.getString(0); date=c.getString(1); if(date.equals(today)) { dblat=c.getDouble(2); dblng=c.getDouble(3); Location dblocation = new Location("db Location"); dblocation.setLatitude(dblat); dblocation.setLongitude(dblng); Double distance = (double) currentlocation.distanceTo(dblocation); if(distance&lt;500) //Toast.makeText(this, "distance " + distance, Toast.LENGTH_LONG).show(); { long when = System.currentTimeMillis(); Notification notification = new Notification(icon,title, when); RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification); contentView.setImageViewResource(R.id.notification_image, R.drawable.ic_launcher); contentView.setTextViewText(R.id.notification_title, "My custom notification title"); contentView.setTextViewText(R.id.notification_text, "My custom notification text"); notification.contentView = contentView; Intent notificationIntent = new Intent(this, ShowReminder.class); notificationIntent.putExtra("title", title); PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0); notification.contentIntent = contentIntent; notification.flags |= Notification.FLAG_NO_CLEAR; //Do not clear the notification notification.defaults |= Notification.DEFAULT_LIGHTS; // LED notification.defaults |= Notification.DEFAULT_VIBRATE; //Vibration notification.defaults |= Notification.DEFAULT_SOUND; // Sound mNotificationManager.notify(NOTIFICATION_ID, notification); } } c.moveToNext(); }} c.close(); database.close(); } </code></pre> <p>How can I make only a single notification come only once for a particular location whenever I am near it instead of it coming repeatedly? Any help will be greatly appreciated. Thanks a lot!</p>
 

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