未为类“ Stream <t>”（rx-dart）定义方法“ retype”

Question

我有一个flutter项目，我将flutter升级到了最新版本。然后突然，应用程序停止构建并给出问题的错误。

我尝试过

flutter clean
flutter packages upgrade
flutter packages get
flutter doctor

Flutter医生显示没有错误

/Users/mac/Desktop/code/flutter/flutter/bin/flutter --no-color doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, v0.5.6-pre.30, on Mac OS X 10.13.4 17E199, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 9.3)
[✓] Android Studio (version 3.1)
[✓] Connected devices (1 available)

• No issues found!
Process finished with exit code 0

关于为什么不建项目的任何想法？

Answer 1

您需要将rxdart升级到与正在使用的Flutter版本中包含的Dart版本兼容的最新0.18.0版本。

Answer 2

是的，更新到0.18.0

依赖关系： 扑： sdk：颤动 cupertino_icons：^ 1.0.0 rxdart：0.18.0