Unhandled Exception: MissingPluginException(No implementation found for method init on channel com.r-CodePudding

I am using a unity mediation for my app. I am trying to initialize it with this code

UnityMediation.initialize(
    gameId: GetPlatform.isAndroid ? '4865xxx' : '4865xxx',
    onComplete: () => print('Initialization Complete'),
    onFailed: (error, message) => print('Initialization Failed: $error $message'),
  );
  UnityMediation.loadRewardedAd(
    adUnitId: GetPlatform.isAndroid ? 'Rewarded_Android' : 'Rewarded_iOS',
    onComplete: (adUnitId) => print('Rewarded Ad Load Complete $adUnitId'),
    onFailed: (adUnitId, error, message) => print('Rewarded Ad Load Failed $adUnitId: $error $message'),
  );

Following all the documentation provided but get an error like this one

[VERBOSE-2:ui_dart_state.cc(198)] Unhandled Exception: MissingPluginException(No implementation found for method init on channel com.rebeloid.unity_mediation)
#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:165:7)
<asynchronous suspension>
#1      UnityMediation.initialize (package:unity_mediation/src/unity_mediation.dart:26:5)
<asynchronous suspension>
[VERBOSE-2:ui_dart_state.cc(198)] Unhandled Exception: MissingPluginException(No implementation found for method loadRewardedAd on channel com.rebeloid.unity_mediation)
#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:165:7)
<asynchronous suspension>
#1      UnityMediation._loadAd (package:unity_mediation/src/unity_mediation.dart:115:5)
<asynchronous suspension>
#2      UnityMediation.loadRewardedAd (package:unity_mediation/src/unity_mediation.dart:75:5)
<asynchronous suspension>

Plugin used https://pub.dev/packages/unity_mediation

What is the cause of this problem? I have trying to search but nothing found about this one. Thank you.

CodePudding user response：

Quit the app and run it again. The native code from the package isn't on the device until do a full start. Hot reload and hot restart won't work after using a newly installed package.