没有为类“BasicMessageChannel<dynamic>”定义“setMockMessageHandler”答案

【问题标题】：'setMockMessageHandler' isn't defined for the class 'BasicMessageChannel<dynamic>'没有为类“BasicMessageChannel<dynamic>”定义“setMockMessageHandler”
【发布时间】：2021-11-13 13:52:42
【问题描述】：

运行 Flutter 项目后，我收到此错误。我能做些什么来解决它？

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

我试过了：

flutter pub upgrage

结果如下：

No dependencies changed.

1 package is discontinued.

76 packages have newer versions incompatible with dependency constraints.
Try `flutter pub outdated` for more information.

还有：

flutter clean
flutter pub upgrade --major-versions

没有帮助

【问题讨论】：

标签： android flutter dart gradle

【解决方案1】：

尝试修复你的缓存，它对我有用

flutter pub cache repair

【讨论】：