Flutter web

[Jean-Marie]

Please, Can someone help me to fix this error by displaying the website Flutter index.HTML? “DartError: MissingPluginException (No implementation found for method _init on channel plugins.flutter.io/google_mobile_ads)”

 

[Zakwan@MTH]

Hi there!
I have figured out a solution to your problem. Please follow the steps listed below :

1. Make sure the google_mobile_ads plugin is corre​

dependencies:
  google_mobile_ads: ^3.0.0 # Use the latest version

ctly added in your pubspec.yaml file :​

Then, run:

flutter pub get

2. The google_mobile_ads plugin requires platform-specific setup.​

For Android:

• Open android/app/build.gradle and ensure minSdkVersion is at least 19:

android {
    defaultConfig {
        minSdkVersion 19
    }
}

Update the AndroidManifest.xml file to include:

<application>
    ...
    <!-- Required permissions -->
    <meta-data
        android:name="com.google.android.gms.ads.APPLICATION_ID"
        android:value="your-admob-app-id" />
</application>

Replace your-admob-app-id with your actual AdMob app ID.

3. Ensure you initialize the google_mobile_ads plugin in your main.dart file before using it:​

import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  MobileAds.instance.initialize();
  runApp(MyApp());
}

4. If you see the MissingPluginException for platform channels, it might indicate an issue with Flutter's plugin registration. You can fix this by:​

flutter clean
flutter pub get
flutter run

Ensuring the MainActivity.java or MainActivity.kt in your Android project is configured properly. For example:


For a Flutter project using the FlutterEmbeddingV2 (default for new projects):

package com.example.myapp;

import io.flutter.embedding.android.FlutterActivity;

public class MainActivity extends FlutterActivity {
}

5. Ensure all necessary dependencies for the plugin are properly linked. Run the following commands:​

Ensure all necessary dependencies for the plugin are properly linked. Run the following commands:

flutter doctor
flutter pub get
flutter pub upgrade

6. Use the Correct Emulator/Device​

The plugin won't work in some simulators that don't support Google Play services. Test your app on a physical device or an emulator with Google Play services.

Testing the Integration

import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  MobileAds.instance.initialize();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text("Google Ads Test")),
        body: Center(
          child: Text("AdMob is initialized successfully."),
        ),
      ),
    );
  }
}

If these steps don’t resolve your issue 🙂 Do tell!
we will try a different approach