我是按照指示从https://developer.here.com/documentation/flutter-sdk-navigate/4.4.0.2/dev_guide/topics/quick-start.html#try-the-example-apps尝试示例应用程序或创建一个新的项目。两者似乎都不起作用。运行失败，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，与文档所说的相反:
当你执行了flutter pub get(或者在Android Studio或任何其他IDE中点击相应的Packages get按钮)之后，将为iOS创建一个新的Podfile
颤振医生:
[✓] 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
你知道是什么问题吗?
这是因为你的Xcode版本太旧，不支持。根据最低要求，至少需要Xcode 12.4。你的版本是12.2。
最重要的是HERE SDK还没有正式支持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，在生成的Podfile中修改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_64n"
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版本的发行说明中摘取了这个。
更新:对于版本>= 4.9.2.0，不再需要上述操作，因为HERE SDK现在正式支持模拟器的arm64和Flutter 2.5。
将此添加到podfile的底部安装豆荚
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