Develop Reference

Notification manager has stopped working

This issue has been solved. See my solution below.
I just completed converting my messaging app to FCM. You can see the process I have been through here. Now that it is done, my notifications no longer work. If my FirebaseMessagingService gets a message and the main app is not active, I create a notification on the phone I'm running on.
This has been running for years correctly on GCM. When I trace through the code, it all executes ok - just no notification shows up in the tray. I can't imagine what Firebase would have to do with this.
This is the code that gets called from the FirebaseMessagingService. This code has been running for years just fine . . .
public static void raiseNotification( String username, String mesText, int count)
{
String message = "From: " + username + " " + mesText;
if (count > 1)
{
count--;
message = message + " + " + count + " more";
}
NotificationCompat.Builder b = new NotificationCompat.Builder(GlobalStuff.GCT);
Intent intent = new Intent(GlobalStuff.GCT, MainActivity.class);
intent.putExtra("whattodo", username);
intent.setAction(Long.toString(System.currentTimeMillis())); //just to make it unique from the next one
PendingIntent pIntent = PendingIntent.getActivity(GlobalStuff.GCT, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
b.setContentTitle("New SafeTalk Message")
.setSmallIcon(R.drawable.ticon)
.setContentText(message)
.setTicker("New SafeTalk Message")
.setContentIntent(pIntent)
.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
.setAutoCancel(true);
//.addAction(R.drawable.smallredball, "Read Now", pIntent)
//.addAction(R.drawable.smallquestion, "hello there", pIntent);
NotificationManager mgr = (NotificationManager)GlobalStuff.GCT.getSystemService(NOTIFICATION_SERVICE);
mgr.notify(0, b.build());
}

This issue is solved. Once you write an app for Android, Google will have you working full time for the rest of your life just to keep it working. They are breaking change demons. Turns out this notification problem has nothing to do with Firebase (which is itself the mother of all breaking changes).
Google changed the requirements on how to send a notification in Oreo. Google designed this change so that if your app is running on Oreo and you haven't made the change your notification simply won't work - hope nobody was building notifications that were important. In Oreo they require a channelId.
Here is code that works in Oreo . . .
Actually this code does not completely work in Oreo. See my next post regarding notifications in Oreo
private void sendNotification(String messageBody) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
PendingIntent.FLAG_ONE_SHOT);
String channelId = getString(R.string.default_notification_channel_id);
Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder =
new NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.drawable.ic_stat_ic_notification)
.setContentTitle("FCM Message")
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Since android Oreo notification channel is needed.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(channelId,
"Channel human readable title",
NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
}
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}

Android: Push Notification has no Sound/Vibration/Light

I'm not getting sound, vibration or light when receiving a notification. Can someone please tell me what I'm missing?
Also I have some other questions:
1.) I only get the specified icon when the app is open. When the app is closed I get the android logo icon (I guess thats because I havent defined an app icon yet).
2.) The ticker text is only shown when the app is open.
3.) When the app is open I dont get the content text, only the content title.
SOLUTION: This happens because I am using com.google.android.gms:play-services-gcm:8.4.0 over the previous version.
Make sure that on the server you send a notification array containing only the key/value pair e=0 while sending your message information in the data array.
This problem has already a great answer here: After updating Google play services to 8.4.0 push notifications displayed by themselves
This is my Source:
public class MyGcmListenerService extends GcmListenerService {
private final static String TAG = "GCM_Listener";
#Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
Log.d(TAG, "From: " + from + " (" + message);
// Sets an ID for the notification
SharedPreferences sharedPreferences = getSharedPreferences(getString(R.string.sharedPreferenceStore_default), Context.MODE_PRIVATE);
int mNotificationId = sharedPreferences.getInt("id_notification", 0);
mNotificationId++;
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.all_picks_made_indicator)
.setAutoCancel(true)
.setContentTitle("Product - " + mNotificationId)
.setContentText(message)
.setTicker("Product Notification received");
// Because clicking the notification opens a new ("special") activity, there's no need to create an artificial back stack.
PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, DetectLoginActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);
// Gets an instance of the NotificationManager service
NotificationManager mNotifyMgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// Builds the notification and issues it.
Notification notification = mBuilder.build();
notification.defaults = Notification.DEFAULT_ALL;
mNotifyMgr.notify(mNotificationId, notification);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putInt("id_notification", mNotificationId);
editor.commit();
}
}

Custom Sound for Push Notification
notification.sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.pop);
In your code change
Notification notification = mBuilder.build();
notification.defaults = Notification.DEFAULT_ALL;
mNotifyMgr.notify(mNotificationId, notification);
To.
notification.sound = Uri.parse("android.resource://" + getPackageName() + "/" +R.raw.pop);
notification.defaults |= Notification.DEFAULT_VIBRATE;

mBuilder.setVibrate(new long[]{1000, 1000, 1000, 1000, 1000});
mBuilder.setLights(getResources().getColor(R.color.mainColor), 1000, 1000);
you can set color and vibrate on the builder object

You're missing something like this:
long[] pattern = new long[]{0, 100, 200, 100}; //two short beeps
mBuilder.setVibrate(pattern);
Notification note = mBuilder.build();
note.vibrate = pattern;
That will give you vibrations. Look into lights, I don't have that code at hand atm.

Is it possible to change the content text or message of a repeating notification in android ? If yes, how?

I have a repeating notification in a broadcast receiver. I will like to replace the content text dynamically. The notification will show the user a different message the next time the notification is shown. I want to know if its possible. If yes, how ?
below is the class of my broadcast receiver
public class TimeAlarm extends BroadcastReceiver {
NotificationManager nm;
long pattern[] = {500, 500};
private Uri notifsound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
private NotificationCompat.BigTextStyle contentStyle;
#Override
public void onReceive(Context context, Intent intent) {
String msg = "Drivers who sit higher feel as if they're driving slower. " +
"Thus, SUV drivers, who are already piloting the vehicles most prone to " +
"roll, drive faster because they feel like they're creeping along. " +
"So lower your seat to get the sensation of more speed.";
contentStyle = new android.support.v4.app.NotificationCompat.BigTextStyle();
contentStyle.bigText(msg);
contentStyle.setBigContentTitle("Lower Your Seat");
contentStyle.setSummaryText("AutoKit");
NotificationCompat.Builder builder;
builder = (NotificationCompat.Builder) new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("AutoKit")
.setContentText("Tip of the Day")
.setTicker("Daily Tip")
.setStyle(contentStyle)
.setSound(notifsound)
.setAutoCancel(true)
.setVibrate(pattern);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIntent);
nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
nm.notify(1, builder.build());
}
}
here is the method is called in my mainactivity and ties the broadcast receiver to an alarm manager
public void setRepeatingAlarm(){ //user receives notifications every 24 hours at 7am
am = (AlarmManager)this.getSystemService(this.ALARM_SERVICE);
Intent intent = new Intent(this, TimeAlarm.class);
PendingIntent pi = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 07);
calendar.set(Calendar.MINUTE, 00);
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000 * 60 * 60 * 24, pi);
}

Modify a Notification
To set up a notification so it can be updated, issue it with a notification ID by calling NotificationManager.notify(ID, notification). To update this notification once you've issued it, update or create a NotificationCompat.Builder object, build a Notification object from it, and issue the Notification with the same ID you used previously.
The following snippet demonstrates a notification that is updated to reflect the number of events that have occurred. It stacks the notification, showing a summary:
mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Sets an ID for the notification, so it can be updated
int notifyID = 1;
mNotifyBuilder = new NotificationCompat.Builder(this)
.setContentTitle("New Message")
.setContentText("You've received new messages.")
.setSmallIcon(R.drawable.ic_notify_status)
numMessages = 0;
// Start of a loop that processes data and then notifies the user
...
mNotifyBuilder.setContentText(currentText)
.setNumber(++numMessages);
// Because the ID remains unchanged, the existing notification is
// updated.
mNotificationManager.notify(
notifyID,
mNotifyBuilder.build());
...
Taken from developer site. please refer, http://developer.android.com/training/notify-user/managing.html

here the changes I made in the broadcast receiver class.
public class TimeAlarm extends BroadcastReceiver {
NotificationManager nm;
long pattern[] = {500, 500};
private Uri notifsound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
private NotificationCompat.BigTextStyle contentStyle;
private List contentTexts, contentTitles;
#Override
public void onReceive(Context context, Intent intent) {
contentTexts = new ArrayList<String>();
contentTitles = new ArrayList<String>();
prepareContentTitles();
prepareContentTexts();
SharedPreferences prefs = context.getSharedPreferences("notification_count", context.MODE_PRIVATE);
int count = prefs.getInt("notification_count", 0);
contentStyle = new android.support.v4.app.NotificationCompat.BigTextStyle();
contentStyle.bigText((CharSequence) contentTexts.get(count));
contentStyle.setBigContentTitle((CharSequence) contentTitles.get(count));
contentStyle.setSummaryText("AutoKit");
NotificationCompat.Builder builder;
builder = (NotificationCompat.Builder) new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("AutoKit")
.setContentText("Tip of the Day")
.setTicker("Daily Tip")
.setStyle(contentStyle)
.setSound(notifsound)
.setAutoCancel(true)
.setVibrate(pattern);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIntent);
nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
nm.notify(1, builder.build());
if (count == contentTexts.size() - 1) {
SharedPreferences.Editor editor = prefs.edit();
editor.putInt("notification_count", 0);
editor.commit();
}
else {
SharedPreferences.Editor editor = prefs.edit();
editor.putInt("notification_count", count + 1);
editor.commit();
}
}
public void prepareContentTexts() {
contentTexts.add("Drivers who sit higher feel as if they're driving slower. " +
"Thus, SUV drivers, who are already piloting the vehicles most prone to " +
"roll, drive faster because they feel like they're creeping along. " +
"So lower your seat to get the sensation of more speed.");
contentTexts.add("Manufacturers recommend replacing your blades every three months. " +
"Keep a spare set in your trunk. A product such as Rain Clear can also help " +
"minimize the work of your wipers; spray it onto the glass every few weeks. " +
"In some light rains, it makes the wipers almost unnecessary");
contentTexts.add("At the BMW Performance Driving School, instructor Jim Clark says " +
"these four words over and over: \"Slow in, fast out.\" When taking a corner," +
" you need to scrub as much of that speed as you can while the car is braking" +
" in a straight line, then you can accelerate out of the curve. The converse " +
"is \"Fast in, maybe no out.\"");
}
public void prepareContentTitles() {
contentTitles.add("Lower Your Seat");
contentTitles.add("Rainproof Your Windshield");
contentTitles.add("Maneuver Tight Corners ");
}
}
The notification displays different content texts every time it is fired

Android Notification Manager issues

My app get crash after receiving the notification it shows in Log Cat that NosuchMethodError for the line No 107 i.e. .setWhen(System.currentTimeMillis()).build(); in my file, can someone help,
My device version is 4.0+ and code is as follows
final Bundle bundle = intent.getExtras();
final Object systemService = context.getSystemService(Context.NOTIFICATION_SERVICE);
// Retrieve notification details from the intent
final String tickerText = bundle.getString(TICKER_TEXT);
final String message = bundle.getString(MESSAGE);
final String notificationTitle = bundle.getString(TITLE);
final String notificationSubText = bundle.getString(SUBTITLE);
int notificationId = 0;
Intent pintent = new Intent(context,MainActivity.class);
final PendingIntent contentIntent = PendingIntent.getActivity(context, 0, pintent, 0);
Notification notification = new Notification.Builder(context)
.setContentTitle(notificationTitle)
.setContentText(message)
.setTicker(tickerText)
.setAutoCancel(true)
.setSound(Uri.parse("android.resource://"+ context.getPackageName() + "/raw/horn"))
.setSmallIcon(R.drawable.ic_launcher)
.setContentIntent(contentIntent)
.setWhen(System.currentTimeMillis()).build();
NotificationManager notificationMgr = (NotificationManager) systemService;
notificationMgr.notify(notificationId, notification);

Maybe because setWhen() was added only in API level 11. Check if you are running the project in any lower version devices.
If that's the case, then you have to go for backward compatibility and try to learn about it.

Updating new notification

I am using following code to get notifications from a service
nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Intent intent = new Intent(this,test.class);
PendingIntent pi = PendingIntent.getActivity(this, 0, intent,Notification.FLAG_AUTO_CANCEL);
String body = "Hi this is test"+count;
String title = "Ritu"+count;
Notification n = new Notification(R.drawable.icon,body,System.currentTimeMillis());
n.setLatestEventInfo(this, title, body, pi);
n.defaults = Notification.DEFAULT_LIGHTS;
n.number=++count;
nm.notify(uniqueid, n);
Every time I am getting a new notification, the number on it gets incremented but when I open notification window I can see only one the latest notification and after clicking on it number of notification does not get decremented.
Where I am wrong please help.
Thanks!

Try this, in order to remove notification after click:
n.flags |= Notification.FLAG_AUTO_CANCEL;
And instead of using:
n.number = ++count;
Use:
count++;
nm.notify(count, n);
This will allow you to have multiple notifications at the same time

Follow this like if u can get help...
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/app/NotifyWithText.html