I am unable to build the project for iOS. Here are the steps to reproduce the error:

1. Download the project
2. run sh install.sh
3. run flutter pub add get
4. Open the project in Visual Studio Code
5. Setup the signing for Xcode
6. run pod install
7. run flutter run

This produces the following error:

Ld /Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Intermediates.noindex/Pods.build/Release-iphoneos/tflite_flutter.build/Objects-normal/armv7/Binary/tflite_flutter normal armv7 (in target 'tflite_flutter' from project 'Pods')
    cd /Users/vijeshrao/Downloads/FlutterWithMediaPipe-main\ 2/ios/Pods
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -target armv7-apple-ios9.0 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.0.sdk -L/Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Products/Release-iphoneos/tflite_flutter -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphoneos -L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.0.sdk/usr/lib/swift -F/Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Products/Release-iphoneos/tflite_flutter -F/Users/vijeshrao/Documents/flutter/bin/cache/artifacts/engine/ios-release/Flutter.xcframework/ios-arm64_armv7 -filelist /Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Intermediates.noindex/Pods.build/Release-iphoneos/tflite_flutter.build/Objects-normal/armv7/tflite_flutter.LinkFileList -install_name @rpath/tflite_flutter.framework/tflite_flutter -Xlinker -rpath -Xlinker /usr/lib/swift -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -dead_strip -Xlinker -object_path_lto -Xlinker /Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Intermediates.noindex/Pods.build/Release-iphoneos/tflite_flutter.build/Objects-normal/armv7/tflite_flutter_lto.o -fembed-bitcode-marker -fobjc-arc -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphoneos -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Intermediates.noindex/Pods.build/Release-iphoneos/tflite_flutter.build/Objects-normal/armv7/tflite_flutter.swiftmodule -all_load -lc++ -framework TensorFlowLiteC -framework Flutter -framework Foundation -compatibility_version 1 -current_version 1 -Xlinker -dependency_info -Xlinker /Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Intermediates.noindex/Pods.build/Release-iphoneos/tflite_flutter.build/Objects-normal/armv7/tflite_flutter_dependency_info.dat -o /Users/vijeshrao/Library/Developer/Xcode/DerivedData/Runner-hggazerwaeetoqeyyebckgveptau/Build/Intermediates.noindex/Pods.build/Release-iphoneos/tflite_flutter.build/Objects-normal/armv7/Binary/tflite_flutter

ld: framework not found TensorFlowLiteC
clang: error: linker command failed with exit code 1 (use -v to see invocation)

How can I solve this issue? Please let me know.

Thank you in advance..!

Hi,

On macos developing environment with an Android device, I did:

1. sh install.sh
2. flutter pub get
3. flutter run

But received error like this:

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/*path*/FlutterWithMediaPipe/android/app/build.gradle' line: 57

* What went wrong:
A problem occurred evaluating project ':app'.
> /Users/*path*/FlutterWithMediaPipe/android/keystore/keystore.password (No such file or directory)

Thank you for this repository! Face Detector works fine when there is one face present, but when there are 2 or more Non maximum supression algorithm gets stuck in infinite while loop. It doesn't filter out non-intersecting boxes properly. I have slightly modified your code in non_maximum_supression.dart to

var picks = <int>[];
  while (I.isNotEmpty) {
    var ind0 = positions.sublist(positions.length - 1, positions.length);
    var ind1 = positions.sublist(0, positions.length - 1);

    var xx1 = _maximum(_itemIndex(_x1, ind0)[0], _itemIndex(_x1, ind1));
    var yy1 = _maximum(_itemIndex(_y1, ind0)[0], _itemIndex(_y1, ind1));
    var xx2 = _minimum(_itemIndex(_x2, ind0)[0], _itemIndex(_x2, ind1));
    var yy2 = _minimum(_itemIndex(_y2, ind0)[0], _itemIndex(_y2, ind1));
    var w = _maximum(0.0, xx2 - xx1);
    var h = _maximum(0.0, yy2 - yy1);
    var inter = w * h;
    var o = inter /
        (_sum(_itemIndex(area, ind0)[0], _itemIndex(area, ind1)) - inter);

    picks.add(ind0[0]);

    List<double> newI = [];
    List<int> newPositions = [];
    o.asMap().forEach((key, value) {
      if (value <= threshold) {
        newI.add(I[key]);
        newPositions.add(positions[key]);
      }
    });

    I = newI;
    positions = newPositions;
  }

  List<Detection> results = [];

  for (var pick in picks) {
    results.add(detections[pick]);
  }
  return results;

and also in face_detection_service.dart

    for (var detection in detections) {
      Rect? bbox;
      final score = detection.score;
      if (score > threshold) {
        bbox = Rect.fromLTRB(
          inputImage.width * detection.xMin,
          inputImage.height * detection.yMin,
          inputImage.width * detection.width,
          inputImage.height * detection.height,
        );

        bbox = _imageProcessor.inverseTransformRect(
            bbox, image.height, image.width);
      }
      rectFaces.add({'bbox': bbox, 'score': score});
    }
    rectFaces.sort((a, b) => b['score'].compareTo(a['score']));

    return rectFaces;

It detects and returns multiple boxes for each face present. I hope it helps, thanks again for this project.

I am running this application on a google pixel 4a. I am getting these issues for all 4 models of media pipe..

Encountering the following errors:

======== Exception caught by foundation library ==================================================== The following _CastError was thrown while dispatching notifications for CameraController: Null check operator used on a null value

When the exception was thrown, this was the stack: #0 _CameraPageState.onNewCameraSelected. (package:flutter_with_mediapipe/pages/camera_page.dart:131:28) #1 ChangeNotifier.notifyListeners (package:flutter/src/foundation/change_notifier.dart:243:25) #2 ValueNotifier.value= (package:flutter/src/foundation/change_notifier.dart:309:5) #3 CameraController.initialize. (package:camera/src/camera_controller.dart:267:9) #11 Where.whereType. (package:stream_transform/src/where.dart:21:30) ... The CameraController sending notification was: CameraController#a6084(CameraValue(isRecordingVideo: false, isInitialized: true, errorDescription: null, previewSize: Size(720.0, 480.0), isStreamingImages: true, flashMode: FlashMode.auto, exposureMode: ExposureMode.auto, focusMode: FocusMode.auto, exposurePointSupported: true, focusPointSupported: true, deviceOrientation: DeviceOrientation.portraitUp, lockedCaptureOrientation: null, recordingOrientation: null))