无法构建 Flutter 应用程序 - 没有这样的模块“heresdk”答案

【问题标题】：Cannot get Flutter app to build - no such module 'heresdk'无法构建 Flutter 应用程序 - 没有这样的模块“heresdk”
【发布时间】：2021-10-04 22:12:17
【问题描述】：

我按照https://developer.here.com/documentation/flutter-sdk-navigate/4.4.0.2/dev_guide/topics/quick-start.html#try-the-example-apps 的说明尝试示例应用程序或创建新项目。两者似乎都不起作用。运行失败并出现以下错误：

Klamath:hello_map_app mathias$ flutter run
Launching lib/main.dart on iPhone 12 in debug mode...
Running pod install...                                           1,603ms
Running Xcode build...
Xcode build done.                                            6.3s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    warning: [CP] Unable to find matching .xcframework slice in
    '/Users/mathias/Downloads/heresdk-explore-flutter-4.9.0.0.2063/heresdk-explore-flutter-examples-4.9.0.0/hello_map_app/ios/Pods/../.symlinks/plugins/here_sdk/ios/
    Frameworks/heresdk.xcframework heresdk framework ios-x86_64-simulator ios-arm64' for the current build architectures (arm64 x86_64).
    Command CompileSwift failed with a nonzero exit code
    Command CompileSwift failed with a nonzero exit code
    Command CompileSwift failed with a nonzero exit code
    /Users/mathias/Downloads/heresdk-explore-flutter-4.9.0.0.2063/heresdk-explore-flutter-examples-4.9.0.0/hello_map_app/plugins/here_sdk/ios/Classes/MapController.s
    wift:14:8: error: no such module 'heresdk'
    import heresdk
           ^
    /Users/mathias/Downloads/heresdk-explore-flutter-4.9.0.0.2063/heresdk-explore-flutter-examples-4.9.0.0/hello_map_app/plugins/here_sdk/ios/Classes/MapController.s
    wift:14:8: error: no such module 'heresdk'
    import heresdk
           ^
    /Users/mathias/Downloads/heresdk-explore-flutter-4.9.0.0.2063/heresdk-explore-flutter-examples-4.9.0.0/hello_map_app/plugins/here_sdk/ios/Classes/MapController.s
    wift:14:8: error: no such module 'heresdk'
    import heresdk
           ^
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description

Could not build the application for the simulator.
Error launching application on iPhone 12.

我注意到没有为 iOS 插件生成 Podfile，这与文档所说的相反：

在你执行完flutter pub get（或在Android Studio或任何其他IDE中点击相应的Packages get按钮）后，会为iOS创建一个新的Podfile

颤振文档：

[✓] Flutter (Channel stable, 2.5.2, on Mac OS X 10.15.7 19H1419 darwin-x64, locale en-GB)
    • Flutter version 2.5.2 at /Users/mathias/dev/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 3595343e20 (4 days ago), 2021-09-30 12:58:18 -0700
    • Engine revision 6ac856380f
    • Dart version 2.14.3

[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/mathias/Library/Android/sdk
    ✗ cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.2, Build version 12B45b
    • CocoaPods version 1.10.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 3.5)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      ???? https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      ???? https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)

[✓] IntelliJ IDEA Ultimate Edition (version 2021.2.2)
    • IntelliJ at /Users/mathias/Applications/JetBrains Toolbox/IntelliJ IDEA Ultimate.app
    • Flutter plugin version 61.0.4
    • Dart plugin version 212.5486

[✓] IntelliJ IDEA Ultimate Edition (version 2021.2.2)
    • IntelliJ at /Users/mathias/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/212.5284.40/IntelliJ IDEA.app
    • Flutter plugin can be installed from:
      ???? https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      ???? https://plugins.jetbrains.com/plugin/6351-dart

[✓] IntelliJ IDEA Ultimate Edition (version 2021.1.1)
    • IntelliJ at /Users/mathias/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/211.7142.45/IntelliJ IDEA.app
    • Flutter plugin can be installed from:
      ???? https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      ???? https://plugins.jetbrains.com/plugin/6351-dart

[✓] VS Code (version 1.59.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.25.0

[✓] Connected device (2 available)
    • iPhone 12 (mobile) • D8D4529E-FC01-48BA-A640-451B829D6BF9 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-14-2 (simulator)
    • Chrome (web)       • chrome                               • web-javascript • Google Chrome 94.0.4606.71

! Doctor found issues in 1 category.
Process finished with exit code 0

知道可能是什么问题吗？

【问题讨论】：

标签： ios flutter here-api

【解决方案1】：

这是因为您的 Xcode 版本太旧且不受支持。根据minimum requirements，至少需要 Xcode 12.4。您的版本是 12.2。

最重要的是，HERE SDK 尚未正式支持 Flutter 2.5。在设备上运行不受影响，这只发生在模拟器上。作为一种解决方法，修改生成的 Podfile 中的 post_install 任务：

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
    target.build_configurations.each do |config|
          config.build_settings['EXCLUDED_ARCHS[sdk=iphonesimulator*]'] = 'arm64' if `uname -m` == "x86_64\n"
        end

  end
  installer.generated_projects.each do |project|
    project.targets.each do |target|
        target.build_configurations.each do |config|
            config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '12.4'
        end
    end
    project.build_configurations.each do |config|
        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '12.4'
    end
end

我从最新的4.9.0.0 release 的发行说明中获取了这个。

更新：对于 >= 4.9.2.0 的版本，以上内容不再需要，因为 HERE SDK 现在正式支持用于模拟器的 arm64 和 Flutter 2.5。

【讨论】：

非常感谢！我承认我没有查看发行说明，所以我错过了。
伙计，这在数小时后拯救了我的一天。我没有首先找到这篇文章，因为我的问题不在于 HERE SDK，而在于其他模块（Firebase）。由于那里仍然不支持它，因此您描述的解决方法仍然需要并且非常有用！

【解决方案2】：

将此添加到您的 podfile 的底部，然后安装吊舱

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"
    end
  end
end

【讨论】：

感谢您的帮助！我接受了 Datasun 的回答，因为它实际上说明了问题所在并包含有用的进一步信息/链接。