未为类“BasicMessageChannel<dynamic>”定义方法“setMockMessageHandler”

Ays*_*mna 26 mobile-application dart flutter flutter2.0 flutter-exception

运行Flutter项目后,出现此错误。我能做什么来解决它?

Error: The method 'setMockMessageHandler' 
isn't defined for the class 'BasicMessageChannel<dynamic>'.

FAILURE: Build failed with an exception.
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Jur*_*ing 41

在 Mac 上的 AndroidStudio 中更新插件后,我遇到了同样的问题

flutter pub upgrade
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没有为我做任何事,但是

flutter clean
flutter pub upgrade --major-versions
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已经解决了问题

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