Notification Icon with the new Firebase Cloud Messaging system

Question

Yesterday Google presented at Google I O the new notification system based on the new Firebase  I tried this new FCM   Firebase Cloud Messaging   with the example on Github   The icon of the notification is always the ic launcher despite I have declared a specific drawable  Why    Here below the official code for handling the message  public class AppFirebaseMessagingService extends FirebaseMessagingService                   Called when message is received                 param remoteMessage Object representing the message received from Firebase Cloud Messaging                  START receive message       Override     public void onMessageReceived RemoteMessage remoteMessage               If the application is in the foreground handle both data and notification messages here             Also if you intend on generating your own notifications as a result of a received FCM            message  here is where that should be initiated  See sendNotification method below          sendNotification remoteMessage                 END receive message                  Create and show a simple notification containing the received FCM message                 param remoteMessage FCM RemoteMessage received              private void sendNotification RemoteMessage remoteMessage             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            Uri defaultSoundUri  RingtoneManager getDefaultUri RingtoneManager TYPE NOTIFICATION       this is a my insertion looking for a solution         int icon   Build VERSION SDK INT  gt   Build VERSION CODES LOLLIPOP   R drawable myicon  R mipmap myicon          NotificationCompat Builder notificationBuilder   new NotificationCompat Builder this                   setSmallIcon icon                   setContentTitle remoteMessage getFrom                     setContentText remoteMessage getNotification   getBody                     setAutoCancel true                   setSound defaultSoundUri                   setContentIntent pendingIntent            NotificationManager notificationManager                    NotificationManager  getSystemService Context NOTIFICATION SERVICE            notificationManager notify 0    ID of notification     notificationBuilder build

User · Answer

write this    lt meta-data           android name  com google firebase messaging default notification icon           android resource   drawable ic notification    gt    right down  lt application      gt

User · Answer

Use a server implementation to send messages to your client and use data type of messages rather than notification type of messages    This will help you get a callback to onMessageReceived irrespective if your app is in background or foreground and you can generate your custom notification then

User · Answer

if your app is in background the notification icon will be set onMessage Receive method but if you app is in foreground the notification icon will be the one you defined on manifest

User · Answer

There is also one ugly but working way  Decompile FirebaseMessagingService class and modify it s behavior  Then just put the class to the right package in yout app and dex use it instead of the class in the messaging lib itself  It is quite easy and working   There is method   private void zzo Intent intent        Bundle bundle   intent getExtras        bundle remove  android support content wakelockid        if  zza zzac bundle         true if msg is notification sent from FirebaseConsole         if   zza zzdc  Context this        true if app is on foreground             zza zzer  Context this  zzas bundle      create notification             return                       parse notification data to allow use it in onMessageReceived whe app is on foreground         if  FirebaseMessagingService zzav bundle                 zzb zzo  Context this  intent                       this onMessageReceived new RemoteMessage bundle        This code is from version 9 4 0  method will have different names in different version because of obfuscation

User · Answer

Unfortunately this was a limitation of Firebase Notifications in SDK 9 0 0-9 6 1  When the app is in the background the launcher icon is use from the manifest  with the requisite Android tinting  for messages sent from the console   With SDK 9 8 0 however  you can override the default  In your AndroidManifest xml you can set the following fields to customise the icon and color     lt meta-data         android name  com google firebase messaging default notification icon          android resource   drawable notification icon    gt   lt meta-data android name  com google firebase messaging default notification color          android resource   color google blue    gt    Note that if the app is in the foreground  or a data message is sent  you can completely use your own logic to customise the display  You can also always customise the icon if sending the message from the HTTP XMPP APIs

User · Answer

atm they are working on that issue https   github com firebase quickstart-android issues 4  when you send a notification from the Firebase console is uses your app icon by default  and the Android system will turn that icon solid white when in the notification bar  If you are unhappy with that result you should implement FirebaseMessagingService and create the notifications manually when you receive a message  We are working on a way to improve this but for now that s the only way   edit  with SDK 9 8 0 add to AndroidManifest xml  lt meta-data android name  quot com google firebase messaging default notification icon quot  android resource  quot  drawable my favorite pic quot   gt

User · Answer

Just set targetSdkVersion to 19  The notification icon will be colored  Then wait for Firebase to fix this issue

User · Answer

I m triggering my notifications from FCM console and through HTTP JSON     with the same result   I can handle the title  full message  but the icon is always a default white circle    Notification screenshot  Instead of my custom icon in the code   setSmallIcon or setSmallIcon  or default icon from the app    Intent intent   new Intent this  MainActivity class          use System currentTimeMillis   to have a unique ID for the pending intent     PendingIntent pIntent   PendingIntent getActivity this   int  System currentTimeMillis    intent  0        if  Build VERSION SDK INT  lt  16            Notification n    new Notification Builder this                   setContentTitle messageTitle                   setContentText messageBody                   setSmallIcon R mipmap ic launcher                   setContentIntent pIntent                   setAutoCancel true  getNotification            NotificationManager notificationManager                    NotificationManager  getSystemService NOTIFICATION SERVICE             notificationManager notify 0  n           notificationManager notify id  n         else           Bitmap bm   BitmapFactory decodeResource getResources    R mipmap ic launcher            Notification n    new Notification Builder this                   setContentTitle messageTitle                   setContentText messageBody                   setSmallIcon R drawable ic stat ic notification                   setLargeIcon bm                   setContentIntent pIntent                   setAutoCancel true  build             NotificationManager notificationManager                    NotificationManager  getSystemService NOTIFICATION SERVICE             notificationManager notify 0  n           notificationManager notify id  n

User · Answer

My solution is similar to ATom s one  but easier to implement  You don t need to create a class that shadows FirebaseMessagingService completely  you can just override the method that receives the Intent  which is public  at least in version 9 6 1  and take the information to be displayed from the extras  The  hacky  part is that the method name is indeed obfuscated and is gonna change every time you update the Firebase sdk to a new version  but you can look it up quickly by inspecting FirebaseMessagingService with Android Studio and looking for a public method that takes an Intent as the only parameter  In version 9 6 1 it s called zzm  Here s how my service looks like   public class MyNotificationService extends FirebaseMessagingService        public void onMessageReceived RemoteMessage remoteMessage               do nothing             Override     public void zzm Intent intent            Intent launchIntent   new Intent this  SplashScreenActivity class           launchIntent setAction Intent ACTION MAIN           launchIntent addCategory Intent CATEGORY LAUNCHER           PendingIntent pendingIntent   PendingIntent getActivity this  0    R    equest code     launchIntent                  PendingIntent FLAG ONE SHOT           Bitmap rawBitmap   BitmapFactory decodeResource getResources                    R mipmap ic launcher           NotificationCompat Builder notificationBuilder   new NotificationCompat Builder this                   setSmallIcon R drawable ic notification                   setLargeIcon rawBitmap                   setContentTitle intent getStringExtra  gcm notification title                     setContentText intent getStringExtra  gcm notification body                     setAutoCancel true                   setContentIntent pendingIntent            NotificationManager notificationManager                    NotificationManager      getSystemService Context NOTIFICATION SERVICE            notificationManager notify 0    ID of notification     notificationBuilder build

User · Answer

Thought I would add an answer to this one  since my problem was simple but hard to notice   In particular I had copy pasted an existing meta-data element when creating my com google firebase messaging default notification icon  which used an android value tag to specify its value   This will not work for the notification icon  and once I changed it to android resource everything worked as expected

[android] Notification Icon with the new Firebase Cloud Messaging system

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