一.Flutter pub get 一直running

1.首先配置环境变量

PUB_HOSTED_URL:https://pub.flutter-io.cn
FLUTTER_STORAGE_BASE_URL:https://storage.flutter-io.cn

2.删除pubspec.lock文件

3.在控制台重新执行

flutter pub get

如果还是不行那就删除pubspec.lock文件后重启android studio 再执行第3步骤

二.Error: Cannot run with sound null safety, because the following dependencies

1.在android studio中

--no-sound-null-safety

1

2

2.在vscode中

run
flutter run --no-sound-null-safety
build
flutter build apk --no-sound-null-safety