A demo Flutter application for Firebase Cloud Messaging (Firebase push notification)

How to implement firebase in you project:

1. Create flutter project

2. Create project in firebase console.

3. Complete Firebase project setup for both Android & iOS platforms by going to the Firebase console.

4. For Android, replace your google-services.json file with an existing file.

   android -> app -> google-services.json

5. For running on iOS, you have to do some configurations from Xcode. Follow the guide here.

   1. In pubspec.yaml

      add,

         flutter_test:
           sdk: flutter
         firebase_messaging: ^14.6.1
         flutter_local_notifications: ^14.1.0
         firebase_core: ^2.13.0
      

6. In src/main/manifest,

   Inside <activity/> tag (below existing intent filter tag)

   add,

    <activity        
       <intent-filter>
           <action android:name="FLUTTER_NOTIFICATION_CLICK" />
           <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
   
    <application   
       <meta-data
          android:name="com.google.firebase.messaging.default_notification_channel_id"
          android:value="high_importance_channel" />
   
      <meta-data
          android:name="com.google.firebase.messaging.default_notification_icon"
          android:resource="@mipmap/ic_launcher" />
   
      <meta-data
          android:name="com.google.firebase.messaging.default_notification_color"
          android:resource="@color/notification_color" />   
   
    </application>
   

7. In app/build.gradle

   add, apply plugin: 'com.google.gms.google-services' add this at the bottom

8. In android/build.gradle

   add,

       classpath 'com.google.gms:google-services:4.3.8'
   

9. enjoy.

For more help Read official documentation Here