Error: The method 'setMockMessageHandler' isn't defined for the class 'BasicMessageChannel'

Question

I have a flutter application build +1 year ago, I updated its flutter sdk, dart and most of the packages. I followed all the steps on this answer: How do I upgrade an existing Flutter app?.

Now, after going through all the steps, I'm trying to build it and on android platform it's showing me this error .

Error: The method 'setMockMessageHandler' isn't defined for the class 'BasicMessageChannel<dynamic>'.
messages.dart:111
- 'BasicMessageChannel' is from 'package:flutter/src/services/platform_channel.dart' ('../../Documents/flutter/packages/flutter/lib/src/services/platform_channel.dart').
platform_channel.dart:1
Try correcting the name to the name of an existing method, or defining a method named 'setMockMessageHandler'.

        channel.setMockMessageHandler(null);
                ^^^^^^^^^^^^^^^^^^^^^

While on iOS it's showing me this error:

Error (Xcode): ../../.pub-cache/hosted/pub.dev/video_player_platform_interface-2.2.0/lib/messages.dart:432:15: Error: The method 'setMockMessageHandler' isn't
defined for the class 'BasicMessageChannel<dynamic>'.

Flutter doctor:

[✓] Flutter (Channel stable, 3.7.10, on macOS 12.6.3 21G419 darwin-x64, locale en-XK)
    • Flutter version 3.7.10 on channel stable at /Users/drenicespahija/Documents/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 4b12645012 (5 days ago), 2023-04-03 17:46:48 -0700
    • Engine revision ec975089ac
    • Dart version 2.19.6
    • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at /Users/drenicespahija/Library/Android/sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14C18
    • CocoaPods version 1.12.0

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301)

[✓] VS Code (version 1.76.2)
    • VS Code at /Users/drenicespahija/Downloads/Visual Studio Code.app/Contents
    • Flutter extension version 3.62.0

[✓] Connected device (4 available)
    • M2101K7BNY (mobile) • GAQSDEEI8TJVPNMN                     • android-arm64  • Android 12 (API 31)
    • iPhone 14 (mobile)  • 6A80DDC0-C120-43BC-BE8A-040FAED760DB • ios            • com.apple.CoreSimulator.SimRuntime.iOS-16-2 (simulator)
    • macOS (desktop)     • macos                                • darwin-x64     • macOS 12.6.3 21G419 darwin-x64
    • Chrome (web)        • chrome                               • web-javascript • Google Chrome 112.0.5615.49

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

I tried many options that internet told but none of them helped solving it.

The video player version you are using is too old for the current version of flutter. Check this out, you are using the version 2.2.0 of this package: https://pub.dev/packages/video_player_platform_interface/versions — Gabriel Gava, Apr 08 '23 at 22:04

Error: The method 'setMockMessageHandler' isn't defined for the class 'BasicMessageChannel'

0 Answers0