Firebase onMessageReceived not called when app in background

Question

I m working with Firebase and testing sending notifications to my app from my server while the app is in the background  The notification is sent successfully  it even appears on the notification centre of the device  but when the notification appears or even if I click on it  the onMessageReceived method inside my FCMessagingService is never called    When I tested this while my app was in the foreground  the onMessageReceived method was called and everything worked fine  The problem occurs when the app is running in the background   Is this intended behaviour  or is there a way I can fix this   Here is my FBMessagingService   import android util Log   import com google firebase messaging FirebaseMessagingService  import com google firebase messaging RemoteMessage   public class FBMessagingService extends FirebaseMessagingService         Override     public void onMessageReceived RemoteMessage remoteMessage            Log i  PVL    MESSAGE RECEIVED              if  remoteMessage getNotification   getBody      null                Log i  PVL    RECEIVED MESSAGE      remoteMessage getNotification   getBody               else               Log i  PVL    RECEIVED MESSAGE      remoteMessage getData   get  message

User · Answer

Try this   public void handleIntent Intent intent        try           if  intent getExtras      null                RemoteMessage Builder builder   new RemoteMessage Builder  MyFirebaseMessagingService                for  String key   intent getExtras   keySet                  builder addData key  intent getExtras   get key  toString                           onMessageReceived builder build               else               super handleIntent intent                   catch  Exception e            super handleIntent intent

User · Answer

If your problem is related to showing Big Image i e  if you are sending push notification with an image from firebase console and it displays the image only if the app in the foreground  The solution for this problem is to send a push message with only data field  Something like this      data      image    https   static pexels com photos 4825 red-love-romantic-flowers jpg    message    Firebase Push Message Using API   AnotherActivity    True      to     device id Or Device token

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this method handleIntent   has been depreciated  so handling a notification can be done as below    Foreground State  The click of the notification will go to the pending Intent s activity which you are providing while creating a notification pro-grammatically as it generally created with data payload of the notification  Background Killed State - Here  the system itself creates a notification based on notification payload and clicking on that notification will take you to the launcher activity of the application where you can easily fetch Intent data in any of your life-cycle methods

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Override the handleIntent Method of the FirebaseMessageService works for me   here the code in C   Xamarin   public override void HandleIntent Intent intent        try               if  intent Extras    null                        var builder   new RemoteMessage Builder  MyFirebaseMessagingService                 foreach  string key in intent Extras KeySet                                  builder AddData key  intent Extras Get key  ToString                                this OnMessageReceived builder Build                       else                       base HandleIntent intent                       catch  Exception                base HandleIntent intent             and thats the Code in Java  public void handleIntent Intent intent        try               if  intent getExtras      null                        RemoteMessage Builder builder   new RemoteMessage Builder  MyFirebaseMessagingService                 for  String key   intent getExtras   keySet                                  builder addData key  intent getExtras   get key  toString                                onMessageReceived builder build                       else                       super handleIntent intent                       catch  Exception e                super handleIntent intent

User · Answer

I had this issue app doesn t want to open on notification click if app is in background or closed   and the problem was an invalid click action in notification body  try removing or changing it to something valid

User · Answer

If app is in the background mode or inactive killed   and you click on Notification  you should check for the payload in LaunchScreen in my case launch screen is MainActivity java    So in MainActivity java on onCreate check for Extras       if  getIntent   getExtras      null            for  String key   getIntent   getExtras   keySet                  Object value   getIntent   getExtras   get key               Log d  MainActivity      Key      key     Value      value

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When message is received and your app is in background the notification is sent to the extras intent of the main activity   You can check the extra value in the oncreate   or onresume   function of the main activity   You can check for the fields like data  table etc   the one specified in the notification   for example I sent using data as the key  public void onResume        super onResume        if  getIntent   getStringExtra  data    null               fromnotification true              Intent i   new Intent MainActivity this  Activity2 class               i putExtra  notification   notification                startActivity i

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onMessageReceived RemoteMessage remoteMessage  method called based on the following cases     FCM Response With notification and data block           to    device token list       notification            body    Body of Your Notification          title    Title of Your Notification            data            body    Body of Your Notification in Data          title    Title of Your Notification in Title          key 1    Value for key 1          image url    www abc com xyz jpeg          key 2    Value for key 2            App in Foreground    onMessageReceived RemoteMessage remoteMessage  called   shows  LargeIcon and BigPicture in the notification bar  We can read the content from both  notification and data block   App in Background    onMessageReceived RemoteMessage remoteMessage  not called  system tray will receive the message and read body and title from notification block and  shows default message and title in the notification bar     FCM Response With only data block    In this case  removing notification blocks from json         to    device token list       data            body    Body of Your Notification in Data          title    Title of Your Notification in Title          key 1    Value for key 1          image url    www abc com xyz jpeg          key 2    Value for key 2           Solution for calling onMessageReceived     App in Foreground    onMessageReceived RemoteMessage remoteMessage  called   shows  LargeIcon and BigPicture in the notification bar  We can read the content from both  notification and data block   App in Background    onMessageReceived RemoteMessage remoteMessage  called  system tray will not receive the message because of notification key is not in the response  Shows  LargeIcon and BigPicture in the notification bar  Code   private void sendNotification Bitmap bitmap   String title  String      message  PendingIntent resultPendingIntent         NotificationCompat BigPictureStyle style   new NotificationCompat BigPictureStyle        style bigPicture bitmap        Uri defaultSound   RingtoneManager getDefaultUri RingtoneManager TYPE NOTIFICATION        NotificationManager notificationManager    NotificationManager  mContext getSystemService Context NOTIFICATION SERVICE       String NOTIFICATION CHANNEL ID   mContext getString R string default notification channel id        if  Build VERSION SDK INT  gt   Build VERSION CODES O            NotificationChannel notificationChannel   new NotificationChannel NOTIFICATION CHANNEL ID   channel name   NotificationManager IMPORTANCE HIGH            notificationManager createNotificationChannel notificationChannel             Bitmap iconLarge   BitmapFactory decodeResource mContext getResources                R drawable mdmlogo       NotificationCompat Builder notificationBuilder   new NotificationCompat Builder mContext  NOTIFICATION CHANNEL ID               setSmallIcon R drawable mdmlogo               setContentTitle title               setAutoCancel true               setSound defaultSound               setContentText message               setContentIntent resultPendingIntent               setStyle style               setLargeIcon iconLarge               setWhen System currentTimeMillis                 setPriority Notification PRIORITY MAX               setChannelId NOTIFICATION CHANNEL ID         notificationManager notify 1  notificationBuilder build           Reference Link   https   firebase google com docs cloud-messaging android receive

User · Answer

according to the solution from t3h Exi i would like to post the clean code here  Just put it into MyFirebaseMessagingService and everything works fine if the app is in background mode  You need at least to compile com google firebase firebase-messaging 10 2 1    Override public void handleIntent Intent intent        try               if  intent getExtras      null                        RemoteMessage Builder builder   new RemoteMessage Builder  MyFirebaseMessagingService                 for  String key   intent getExtras   keySet                                  builder addData key  intent getExtras   get key  toString                                 onMessageReceived builder build                       else                       super handleIntent intent                       catch  Exception e                super handleIntent intent

User · Answer

you can try this in your main Activity   when in the background    if  getIntent   getExtras      null                for  String key   getIntent   getExtras   keySet                      Object value   getIntent   getExtras   get key                   Log d TAG   quot Key   quot    key    quot  Value   quot    value                            Check the following project as reference

User · Answer

By default the Launcher Activity in you app will be launched when your app is in background and you click the notification  if you have any data part with your notifcation you can handle it in the same activity as follows   if getIntent   getExtras      null       do your stuff  else      do that you normally do

User · Answer

The backend I m working with is using Notification messages and not Data messages  So after reading all the answers I tried to retrieve the extras from the bundle of the intent that comes to the launched activity  But no matter which keys I tried to retrieve from getIntent   getExtras     the value was always null    However  I finally found a way to send data using Notification messages and retrieve it from the intent    The key here is to add the data payload to the Notification message    Example          data              message    message body            title    message title              notification              body    test body            title    test title              to    E4An        After you do this  you will be able to get your info in this way   intent getExtras   getString  title   will be message title  and  intent getExtras   getString  message   will be message body  Reference

User · Answer

Remove notification field completely from your server request  Send only data and handle it in onMessageReceived   otherwise your onMessageReceived   will not be triggered when app is in background or killed   Don t forget to include  priority    high  field in your notification request  According to the documentation  data messages are sent with a normal priority  thus they will not arrive instantly  it could also be the problem    Here is what I am sending from server       data         id   1       missedRequests   5      addAnyDataHere   123         to    fhiT7evmZk8 APA91bFJq7Tkly4BtLRXdYvqHno2vHCRkzpJT8QZy0TlIGs            priority    high      So you can receive your data in onMessageReceived RemoteMessage message  like this    let say I have to get id  Object obj   message getData   get  id            if  obj    null                int id   Integer valueOf obj toString

User · Answer

There are 2 types of Firebase push-notifications   1- Notification message Display message  -   -- 1 1 If you choose this variant  the OS will create it self a notification if app is in Background and will pass the data in the intent  Then it s up to the client to handle this data   -- 1 2 If the app is in Foreground then the notification it will be received via callback-function in the FirebaseMessagingService and it s up to the client to handle it   2- Data messages up to 4k data  -  These messages are used to send only data to the client silently  and it s up to the client to handle it for both cases background foreground via callback-function in FirebaseMessagingService  This is according official docs https   firebase google com docs cloud-messaging concept-options

User · Answer

Just override the OnCreate method of FirebaseMessagingService  It is called when your app is in background   public override void OnCreate            your code     base OnCreate

User · Answer

Check the answer of  Mahesh Kavathiya  For my case  in server code has only like this      notification        body    here is body      title    Title         to    sdfjsdfonsdofoiewj9230idsjkfmnkdsfm      You need to change to       data        body    here is body      title    Title      click action    YOUR ACTION       notification        body    here is body      title    Title        to    sdfjsdfonsdofoiewj9230idsjkfmnkdsfm      Then  in case app in Background  the default activity intent extra will get  data   Good luck

User · Answer

As per Firebase Cloud Messaging documentation-If Activity is in foreground then onMessageReceived will get called  If Activity is in background or closed then notification message is shown in the notification center for app launcher activity  You can call your customized activity on click of notification if your app is in background by calling rest service api for firebase messaging as   URL-https   fcm googleapis com fcm send  Method Type- POST  Header- Content-Type application json Authorization key your api key   Body Payload      notification          title    Your Title        text    Your Text         click action    OPEN ACTIVITY 1     should match to your intent filter           data          keyname    any value     you can get this data as extras in your activity and this data is optional           to     to id firebase refreshedToken        And with this in your app you can add below code in your activity to be called    lt intent-filter gt                   lt action android name  OPEN ACTIVITY 1    gt                   lt category android name  android intent category DEFAULT    gt               lt  intent-filter gt

User · Answer

If app is in background Fire-base by default handling notification But if we want to our custom notification than we have to change our server side  which is responsible for to send our custom data data payload   Remove notification payload completely from your server request  Send only Data and handle it in onMessageReceived   otherwise your onMessageReceived will not be triggered when app is in background or killed   now your server side code format look like        collapse key    CHAT MESSAGE CONTACT      data          loc key    CHAT MESSAGE CONTACT        loc args     John Doe    Contact Exchange         text    John Doe shared a contact in the group Contact Exchange        custom            chat id   241233         msg id   123             badge   1       sound    sound1 mp3        mute   true         NOTE  see this line in above code  text    John Doe shared a contact in the group Contact Exchange  in Data payload you should use  text  parameter instead of  body  or  message  parameters for message description or whatever you want to use text   onMessageReceived     Override     public void onMessageReceived RemoteMessage remoteMessage            Log e TAG   From      remoteMessage getData   toString              if  remoteMessage    null              return              Check if message contains a data payload          if  remoteMessage getData   size    gt  0                  Log e TAG   Data Payload      remoteMessage getData   toString                   Log e TAG   Data Payload      remoteMessage                try                    Map lt String  String gt  params   remoteMessage getData                    JSONObject json   new JSONObject params                   Log e  JSON OBJECT   json toString                       Log e TAG   onMessageReceived      json toString                      handleDataMessage json                 catch  Exception e                    Log e TAG   Exception      e getMessage

User · Answer

I had the same problem  It is easier to use the  data message  instead of the  notification   The data message always load the class onMessageReceived   In that class you can make your own notification with the notificationbuilder   Example     Override     public void onMessageReceived RemoteMessage remoteMessage            sendNotification remoteMessage getData   get  title   remoteMessage getData   get  body                private void sendNotification String messageTitle 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 UPDATE CURRENT            long   pattern    500 500 500 500 500            Uri defaultSoundUri  RingtoneManager getDefaultUri RingtoneManager TYPE NOTIFICATION            NotificationCompat Builder notificationBuilder    NotificationCompat Builder  new NotificationCompat Builder this                   setSmallIcon R drawable ic stat name                   setContentTitle messageTitle                   setContentText messageBody                   setAutoCancel true                   setVibrate pattern                   setLights Color BLUE 1 1                   setSound defaultSoundUri                   setContentIntent pendingIntent            NotificationManager notificationManager    NotificationManager  getSystemService Context NOTIFICATION SERVICE           notificationManager notify 0    ID of notification     notificationBuilder build

User · Answer

The point which deserves highlighting is that you have to use data message - data key only - to get onMessageReceived handler called even when the app is in background  You shouldn t have any other notification message key in your payload  otherwise the handler won t get triggered if the app is in background   It is mentioned  but not so emphasized in FCM documentation  here   https   firebase google com docs cloud-messaging concept-options notifications and data messages     Use your app server and FCM server API  Set the data key only  Can be   either collapsible or non-collapsible

User · Answer

I got the same issue  If the app is foreground - it triggers my background service where I can update my database based on the notification type  But  the app goes to the background - the default notification service will be taken care to show the notification to the user    Here is my solution to identify app in background and trigger your background service   public class FirebaseBackgroundService extends WakefulBroadcastReceiver      private static final String TAG    FirebaseService       Override   public void onReceive Context context  Intent intent        Log d TAG   I m in            if  intent getExtras      null          for  String key   intent getExtras   keySet              Object value   intent getExtras   get key           Log e  FirebaseDataReceiver    Key      key     Value      value           if key equalsIgnoreCase  gcm notification body    amp  amp  value    null              Bundle bundle   new Bundle              Intent backgroundIntent   new Intent context  BackgroundSyncJobService class             bundle putString  push message   value                  backgroundIntent putExtras bundle             context startService backgroundIntent                                   In the manifest xml    lt receiver android exported  true  android name   FirebaseBackgroundService  android permission  com google android c2dm permission SEND  gt               lt intent-filter gt                   lt action android name  com google android c2dm intent RECEIVE    gt               lt  intent-filter gt           lt  receiver gt    Tested this solution in latest android 8 0 version  Thanks

User · Answer

This is working as intended  notification messages are delivered to your onMessageReceived callback only when your app is in the foreground  If your app is in the background or closed then a notification message is shown in the notification center  and any data from that message is passed to the intent that is launched as a result of the user tapping on the notification   You can specify a click action to indicate the intent that should be launched when the notification is tapped by the user  The main activity is used if no click action is specified   When the intent is launched you can use the  getIntent   getExtras      to retrieve a Set that would include any data sent along with the notification message   For more on notification message see docs

User · Answer

There are two types of messages  notification messages and data messages  If you only send data message  that is without notification object in your message string  It would be invoked when your app in background

User · Answer

Just call this in your MainActivity s onCreate Method     if  getIntent   getExtras      null                  Call your NotificationActivity here               Intent intent   new Intent MainActivity this  NotificationActivity class               startActivity intent

User · Answer

I was having the same issue and did some more digging on this  When the app is in the background  a notification message is sent to the system tray  BUT a data message is sent to onMessageReceived   See https   firebase google com docs cloud-messaging downstream monitor-token-generation 3 and https   github com firebase quickstart-android blob master messaging app src main java com google firebase quickstart fcm MyFirebaseMessagingService java  To ensure that the message you are sending  the docs say   Use your app server and FCM server API  Set the data key only  Can be either collapsible or non-collapsible   See https   firebase google com docs cloud-messaging concept-options notifications and data messages

User · Answer

Here is more clear concepts about firebase message  I found it from their support team   Firebase has three message types    Notification messages   Notification message works on background or foreground  When app is in background  Notification messages are delivered to the system tray  If the app is in the foreground  messages are handled by onMessageReceived   or didReceiveRemoteNotification callbacks  These are essentially what is referred to as Display messages   Data messages  On Android platform  data message can work on background and foreground  The data message will be handled by onMessageReceived    A platform specific note here would be  On Android  the data payload can be retrieved in the Intent used to launch your activity  To elaborate  if you have  click action   launch Activity 1   you can retrieve this intent through getIntent   from only Activity 1    Messages with both notification and data payloads  When in the background  apps receive the notification payload in the notification tray  and only handle the data payload when the user taps on the notification  When in the foreground  your app receives a message object with both payloads available  Secondly  the click action parameter is often used in notification payload and not in data payload  If used inside data payload  this parameter would be treated as custom key-value pair and therefore you would need to implement custom logic for it to work as intended   Also  I recommend you to use onMessageReceived method  see Data message  to extract the data bundle  From your logic  I checked the bundle object and haven t found expected data content  Here is a reference to a similar case which might provide more clarity   From server side  firebase notification should bellow format   Server side should send  notification  object  Lacks of  notification  object in my TargetActivity didn t getting message using getIntent      Correct message format is given bellow       data        body    here is body      title    Title       notification        body    here is body      title    Title      click action    YOUR ACTION        to    ffEseX6vwcM APA91bF8m7wOF MY FCM ID 07j1aPUb      Here is more clear concepts about firebase message  I found it from their support team   For more info visit my this thread and this thread

[android] Firebase onMessageReceived not called when app in background

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