Flutter AnimationController vsync 错误

[devImpChen]

这两天想着看一下fun_android_flutter的代码，但是下载下来之后

AnimationController(duration: Duration(seconds: 3), vsync: this);

发生错误如下

- The named parameter 'vsync' isn't defined.

解决办法

in your pubspec.yml

change this to :

environment:
  sdk: ">=2.8.0 <3.0.0"

and flutter pub get

重启下 Android Studio

参考链接：
sf
github