第三次入门Flutter 希望这次能坚持下来,
执行Flutter doctor
Building flutter tool...
Unhandled exception:
Bad state: Future already completed
#0 _AsyncCompleter.complete (dart:async/future_impl.dart:39:31)
#1 _NativeSocket.startConnect.<anonymous closure>.connectNext.<anonymous closure> (dart:io/runtime/binsocket_patch.dart:490:23)
#2 _NativeSocket.issueWriteEvent.issue (dart:io/runtime/binsocket_patch.dart:844:14)
#3 _NativeSocket.issueWriteEvent (dart:io/runtime/binsocket_patch.dart:851:12)
#4 _NativeSocket.multiplex (dart:io/runtime/binsocket_patch.dart:872:11)
#5 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
```
原因是 git clone 下来的flutter 有问题 我的大小 是199M 实际是900多M 重新git clone 好使
