1. AnimationController has lost it's vsync
在升級 Flutter 1.22.1 以后發(fā)現(xiàn) AnimationController 的 required 參數(shù) vsync 傳進(jìn)去以后報錯,其實根本不提示這個參數(shù),查了下資料在 Flutter 的項目 AnimationController has lost it's vsync 中有人提到,目前解決辦法如下
- change minimum sdk to 2.8
- run flutter upgrade
- run flutter pub get
- run flutter clean
- restart IDE
跟蹤 Flutter 的穩(wěn)定版本
flutter channel stable
然后升級就好
flutter upgrade