flutter笔记
2021-09-27 本文已影响0人
neal秦
Error: Cannot run with sound null safety, because the following dependencies
don't support null safety:
解决方案：
flutter run --no-sound-null-safety
flutter build apk --no-sound-null-safety
变量以下划线（_）开头，在Dart语言中使用下划线前缀标识符，会强制其变成私有的。Dart中私有变量应该以final来修饰
