Java.Lang.NoClassDefFoundError when implementing firebase cloud messaging

Question

I am implementing push notifications using Firebase Cloud Messaging, for this I added this code in my AndroidManifest.xml file

<!--FCM RECEIVER-->
<receiver
  android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver"
  android:exported="false"/>
<receiver
  android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver"
  android:exported="true"
  android:permission="com.google.android.c2dm.permission.SEND">
  
  <intent-filter>
    <action android:name="com.google.android.c2dm.intent.RECEIVE"/>
    <action android:name="com.google.android.c2dm.intent.REGISTRATION"/>
    <category android:name="${applicationId}"/>
  </intent-filter>    
</receiver>
<!---FCM RECEIVER ENDS HERE-->

but when I try to run the application, it throws the application even before starting the activity

Java.Lang.NoClassDefFoundError: 'Failed resolution of: Lcom/google/android/datatransport/runtime/dagger/internal/Factory;'

By the way, I had Installed two NuGet Packages for this functionality:

Xamarin.GooglePlayServices.Base
Xamarin.Firebase.Messaging

I have tried:

deleting the bin and obj folder and building the solution again
updating all the same family nugget packages to the same version

score 87 · Accepted Answer · answered Dec 21 '20 at 05:03

87

Installing the Xamarin.Google.Dagger package solved this problem for me.

answered Dec 21 '20 at 05:03

sobo

887
8
7

7

How did you find that the error related to the missing package? – Omtechguy Jan 19 '21 at 12:48
1

I wish this was mentioned in the [Xamarin doc](https://learn.microsoft.com/en-us/xamarin/android/data-cloud/google-messaging/remote-notifications-with-fcm)! – trebor Feb 23 '21 at 02:06
Such an easy solution. I wish more problems were solved like this. – Chris Jun 29 '21 at 18:55
4

Make sure you install it into the android project, and not the xamarin forms project. – pseudoabdul Jul 14 '21 at 03:27
Please update answer to specify install must be on the Android Project – user1034912 Sep 10 '21 at 07:47

score 8 · Answer 2 · edited Jan 11 '21 at 23:04

8

Just Install the package Xamarin.Google.Dagger. That should do the trick. Seems it's trying to look for the package but doesn't find it.

edited Jan 11 '21 at 23:04

Dharman

30,962
25
85
135

answered Jan 11 '21 at 22:58

Ernest John

101
5

Java.Lang.NoClassDefFoundError when implementing firebase cloud messaging

2 Answers2