Flutter: fatal error: 'Flutter/Flutter.h' file not found

Question

Xcode's output: ↳ In file included from /Users/dani/development/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.3/ios/Classes/FLTURLLauncherPlugin.m:7: /Users/dani/development/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.3/ios/Classes/FLTURLLauncherPlugin.h:5:9: fatal error: 'Flutter/Flutter.h' file not found #import <Flutter/Flutter.h> ^~~~~~~~~~~~~~~~~~~ 1 error generated. In file included from /Users/dani/development/flutter/.pub-cache/hosted/pub.dartlang.org/shared_preferences-2.0.5/ios/Classes/FLTSharedPreferencesPlugin.m:5: /Users/dani/development/flutter/.pub-cache/hosted/pub.dartlang.org/shared_preferences-2.0.5/ios/Classes/FLTSharedPreferencesPlugin.h:5:9: fatal error: 'Flutter/Flutter.h' file not found #import <Flutter/Flutter.h> ^~~~~~~~~~~~~~~~~~~ 1 error generated. Command CompileSwift failed with a nonzero exit code Command CompileSwift failed with a nonzero exit code note: Using new build system note: Building targets in parallel note: Planning build note: Constructing build description

扑博士：

[✓] Flutter (Channel stable, 2.0.5, on macOS 11.2.3 20D91
    darwin-x64, locale en-GB)
[✓] Android toolchain - develop for Android devices (Android
    SDK version 30.0.3)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 4.1)
[✓] Connected device (3 available)

• No issues found!

我尝试了这里提出的所有解决方案，但没有成功： https://github.com/flutter/flutter/issues/16036

所有依赖项已更新

Answer 1

我相信你应该尝试这两个步骤：

1- 尝试删除 pod 文件并通过执行重新安装它们：

$ cd ios/
$ pod deintegrate 
$ pod install

2- 通过在项目的根目录上执行命令来清理工作区：

$ flutter clean

然后再次尝试运行应用程序。

Answer 2

这是在我们的应用程序中找到一个不支持空安全的库的问题。识别后我们可以做几件事：

询问其回购以获得对空安全的支持
使用支持此功能的其他库
尝试自己修复

计算器。com/a/33509278/4858133

Flutter: fatal error: 'Flutter/Flutter.h' file not found

Flutter: fatal error: 'Flutter/Flutter.h' file not found

flutter

flutter-dependencies