先改变数字 如果提交错误 返回原来数字 为什么报错?

[simanlx]

Platforms

dart

Description

var aaaa= false;
Future likeMomentsOne(workMomentID,index) {
///send your request here

aaaa=!aaaa;
final Completer<bool> completer = new Completer<bool>();
completer.complete(aaaa);
aaaa=!aaaa;
await Timer(const Duration(milliseconds: 500), () {
  print("dddll");
  // if your request is failed,return null,
  completer.complete(aaaa);

});



return completer.future;

}

My code

[VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: Bad state: Future already completed
#0 _AsyncCompleter.complete (dart:async/future_impl.dart:41:31)[VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: Bad state: Future already completed
#0 _AsyncCompleter.complete (dart:async/future_impl.dart:41:31)

Try do it

No response

[zmtzawqlp]

Future already completed

Completer 不是stream，不能多次调用complete