job.answiz.com
  • 3
Votes
name

Here is my manifest

    <service android:name=".fcm.PshycoFirebaseMessagingServices">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

    <service android:name=".fcm.PshycoFirebaseInstanceIDService">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
        </intent-filter>
    </service>

When the app is in background and notification arrives then the default notification comes and doesn't run my code of onMessageReceived.

Here is my onMessageReceived code. This invokes if my app is running on foreground, not when app in background. How to run this code when the app is in background too?

// [START receive_message]
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    // TODO(developer): Handle FCM messages here.
    // 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.
    data = remoteMessage.getData();
    String title = remoteMessage.getNotification().getTitle();
    String message = remoteMessage.getNotification().getBody();
    String imageUrl = (String) data.get("image");
    String action = (String) data.get("action");
    Log.i(TAG, "onMessageReceived: title : "+title);
    Log.i(TAG, "onMessageReceived: message : "+message);
    Log.i(TAG, "onMessageReceived: imageUrl : "+imageUrl);
    Log.i(TAG, "onMessageReceived: action : "+action);

    if (imageUrl == null) {
        sendNotification(title,message,action);
    } else {
        new BigPictureNotification(this,title,message,imageUrl,action);
    }
}
// [END receive_message]
name
  • 0

When app is in foregroundonMessageReceived() method is called from the FirebaseService.So the pendingIntent defined in the service class will be called.

And when app is in backgroundfirst activity is called.

Now, if you use a splash activity, then must keep in mind the splashactivity will be called, else if there is no splashActivity, then whatever the first activity is, will be called.

Then you need to check getIntent() of the firstActivity to see if it has any bundle .if everything is alright you will see bundle is there with values filled in. If the value in data tag sent from server looks like this,

"data": {
    "user_name": "arefin sajib",
    "value": "user name notification"
  }

Then in the first activity, you will see, there is a valid intent( getIntent() is not null) , valid bundle and inside bundle , there will the whole JSON mentioned above with data as key.

For this scenario, code for extraction of value will look like this,

    if(getIntent()!=null){
            Bundle bundle = getIntent().getExtras();
            if (bundle != null) {
                try {
                   JSONObject object = new JSONObject(bundle.getStringExtra("data"));
String user_name = object.optString("user_name");

                } catch (JSONException e) {
                    e.printStackTrace();
                }


            }
        }
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name
  • 0

To capture the message in background you need to use a BroadcastReceiver

import android.content.Context
import android.content.Intent
import android.util.Log
import androidx.legacy.content.WakefulBroadcastReceiver
import com.google.firebase.messaging.RemoteMessage

class FirebaseBroadcastReceiver : WakefulBroadcastReceiver() {

    val TAG: String = FirebaseBroadcastReceiver::class.java.simpleName

    override fun onReceive(context: Context, intent: Intent) {

        val dataBundle = intent.extras
        if (dataBundle != null)
            for (key in dataBundle.keySet()) {
                Log.d(TAG, "dataBundle: " + key + " : " + dataBundle.get(key))
            }
        val remoteMessage = RemoteMessage(dataBundle)
        }
    }

and add this to your manifest:

<receiver
      android:name="MY_PACKAGE_NAME.FirebaseBroadcastReceiver"
      android:exported="true"
      android:permission="com.google.android.c2dm.permission.SEND">
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        </intent-filter>
</receiver>
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To make firebase library to call your onMessageReceived() in the following cases

  1. App in foreground
  2. App in background
  3. App has been killed

you must not put JSON key 'notification' in your request to firebase API but instead use 'data', see below.

The following message will not call your onMessageReceived() when your app is in the background or killed, and you can't customize your notification.

{
   "to": "/topics/journal",
   "notification": {
   "title" : "title",
   "text": "data!",
   "icon": "ic_notification"
    }
}

but instead using this will work

{
  "to": "/topics/dev_journal",
   "data": {
       "text":"text",
       "title":"",
       "line1":"Journal",
       "line2":"刊物"
   }
} 

Basically, the message is sent in the argument RemoteMessage along with your data object as Map, then you can manage the notification in onMessageReceived as in the snippet here

@Override
public void onMessageReceived(RemoteMessage remoteMessage) { 
     Map<String, String> data = remoteMessage.getData();

     //you can get your text message here.
     String text= data.get("text");


     NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
        // optional, this is to make beautiful icon
             .setLargeIcon(BitmapFactory.decodeResource(
                                    getResources(), R.mipmap.ic_launcher))  
        .setSmallIcon(smallIcon)  //mandatory
      .......
    /*You can read more on notification here:
    https://developer.android.com/training/notify-user/build-notification.html
    https://www.youtube.com/watch?v=-iog_fmm6mE
    */
}
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