架构 x86_64 flutter 的未定义符号

Question

我正在应用程序颤振中工作。Android 工作正常，但在 ios 中没有。我需要一些帮助才能在 ios 移动设备上运行它。我正在使用 lib: google_maps_flutter: ^0.5.27+3和firebase_ml_vision : ^0.9.3+8。Xcode 11.4.1 和 Mac os Catalina 10.15.4。有人知道如何解决这个问题。我还没找到

flutter doctor
[?] Flutter (Channel stable, v1.17.0, on Mac OS X 10.15.4 19E287, locale en-BR)
[?] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[?] Xcode - develop for iOS and macOS (Xcode 11.4.1)
[?] Android Studio (version 3.6)
[?] VS Code (version 1.45.0)
[?] Connected device (1 available)

• No issues found!

日志错误如下：

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_GMSPolyline", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapPolylineController.o)
  "_OBJC_CLASS_$_FIRVisionOnDeviceImageLabelerOptions", referenced from:
      objc-class-ref in firebase_ml_vision(ImageLabeler.o)
  "_FIRFaceLandmarkTypeLeftEar", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeMouthLeft", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeRightCheek", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeNoseBase", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeRightEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSMarker", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapMarkerController.o)
  "_FIRFaceLandmarkTypeMouthRight", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeLeftEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeRightEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeLowerLipTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSServices", referenced from:
      objc-class-ref in AppDelegate.o
  "_FIRFaceContourTypeNoseBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeLeftCheek", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeLeftEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSMapStyle", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_FIRFaceContourTypeRightEyebrowTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSPolygon", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapPolygonController.o)
  "_FIRFaceContourTypeUpperLipTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeRightEyebrowBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeLeftEyebrowBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeRightEar", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeUpperLipBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVisionCloudImageLabelerOptions", referenced from:
      objc-class-ref in firebase_ml_vision(ImageLabeler.o)
  "_OBJC_CLASS_$_GMSCameraPosition", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_kGMSMinZoomLevel", referenced from:
      _InterpretMapOptions in google_maps_flutter(GoogleMapController.o)
  "_OBJC_CLASS_$_GMSMapView", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_OBJC_CLASS_$_GMSMutablePath", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapPolygonController.o)
      objc-class-ref in google_maps_flutter(GoogleMapPolylineController.o)
  "_OBJC_CLASS_$_GMSCircle", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapCircleController.o)
  "_FIRFaceLandmarkTypeMouthBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSCoordinateBounds", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_OBJC_CLASS_$_GMSCameraUpdate", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_FIRFaceContourTypeLeftEyebrowTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVision", referenced from:
      objc-class-ref in firebase_ml_vision(FLTFirebaseMlVisionPlugin.o)
  "_OBJC_CLASS_$_FIRVisionFaceDetectorOptions", referenced from:
      objc-class-ref in firebase_ml_vision(FaceDetector.o)
  "_kGMSMaxZoomLevel", referenced from:
      _InterpretMapOptions in google_maps_flutter(GoogleMapController.o)
  "_FIRFaceContourTypeAll", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVisionBarcodeDetectorOptions", referenced from:
      objc-class-ref in firebase_ml_vision(BarcodeDetector.o)
  "_OBJC_CLASS_$_FIRApp", referenced from:
      objc-class-ref in firebase_ml_vision(FLTFirebaseMlVisionPlugin.o)
  "_FIRFaceContourTypeLowerLipBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVisionImage", referenced from:
      objc-class-ref in firebase_ml_vision(FLTFirebaseMlVisionPlugin.o)
  "_FIRFaceContourTypeFace", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeNoseBridge", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

错误可能出在某些 XCode 项目文件上，请尝试：

1. 备份您的项目。

2. 运行这个命令

   flutter clean && \ rm ios/Podfile ios/Podfile.lock pubspec.lock && \ rm -rf ios/Pods ios/Runner.xcworkspace && \ flutter run

参考