使用Flutter run 出现错误:
错误原因:
镜像：https://storage.googleapis.com/download.flutter.io 访问不了
解决办法：
更改仓库地址为 https://storage.flutter-io.cn/download.flutter.io
allprojects {
repositories {
google()
jcenter()
maven {url "https://storage.flutter-io.cn/download.flutter.io"}
}
}```