iOS Xcode 10 的 Flutter 构建失败

Question

我将 Flutter 升级到最新版本。以下是医生输出

Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel beta, v0.8.2, on Mac OS X 10.14 18A326h, locale en-US)
[?] Android toolchain - develop for Android devices (Android SDK 28.0.1)
[?] iOS toolchain - develop for iOS devices (Xcode 10.0)
[?] Android Studio (version 3.1)
[?] VS Code (version 1.27.1)

当我以 iOS 模拟器为目标运行应用程序时，我得到了这个

Launching lib/main.dart on iPhone XS Max in debug mode...
Starting Xcode build...
Xcode build done.
Failed to build iOS app
Error output from Xcode build:
?
    ** BUILD FAILED **

Xcode's output:
?
    error: Multiple commands produce '/Users/kalehv/dev/todo/todo-flutter/build/ios/Debug-iphonesimulator/Runner.app/Frameworks/Flutter.framework':
    1) Target 'Runner' has copy command from '/Users/kalehv/dev/todo/todo-flutter/ios/Flutter/Flutter.framework' to '/Users/kalehv/dev/todo/todo-flutter/build/ios/Debug-iphonesimulator/Runner.app/Frameworks/Flutter.framework'
    2) That command depends on command in Target 'Runner': script phase “[CP] Embed Pods Frameworks”
    warning: The use of Swift 3 @objc inference in Swift 4 mode is deprecated. Please address deprecated @objc inference warnings, test your code with “Use of deprecated Swift 3 @objc inference” logging enabled, and then disable inference by changing the "Swift 3 @objc Inference" build setting to "Default" for the "Runner" target. (in target 'Runner')
    warning: ignoring duplicated output file: '/Users/kalehv/dev/todo/todo-flutter/build/ios/Debug-iphonesimulator/Runner.app/Frameworks/Flutter.framework' (in target 'Runner')
    note: Using new build systemnote: Planning buildnote: Constructing build description
Could not build the application for the simulator.
Error launching application on iPhone XS Max.

Answer 1

我认为这至少对我有用 url。

打开Xcode并有File左上方旁边的苹果图标，然后打开Workspace Settings并更改构建系统Legacy Build System。