Flutter SDK疑难杂症之路

Error: Unable to update Dart SDK. Retrying… flutter doctor flutter upgrade

1、添加系统环境变量

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

2、重新打开控制台执行之前的命令

Flutter requires PowerShell 5.0 or newer

1、更新PowerShell：https://www.microsoft.com/en-us/download/details.aspx?id=54616

2、选择对应平台补丁安装并重启电脑

Could not download arm64_v8a_debug.jar (io.flutter:arm64_v8a_debug:1.0.0-ee7…

1、修改#flutter-SDK#/packages/flutter_tools/gradle/flutter.gradle

private static final String MAVEN_REPO = “https://storage.googleapis.com/download.flutter.io”;
改为
private static final String MAVEN_REPO = “https://storage.flutter-io.cn/download.flutter.io”;

2、 android/build.gradle 添加 maven { url ‘http://download.flutter.io’ }