这是因为没有开Quick assist powered by the Dart Analysis Server
打开设置,搜索assistant
把这个勾搭上就行了
参考:https://github.com/flutter/flutter-intellij/issues/2448
标签：widget,intellij,powered,Dart,androidstudio,Enter,flutter,issues
来源： https://www.cnblogs.com/wellwellwell/p/16084590.html