AR face with texture not working

Description

When I ran the sample code of Flutter-HMS-AR/example, inside ARFace Scene, if I apply texture to the face, I get the following error:

[ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(error, Attempt to read from field 'java.lang.String io.flutter.embedding.engine.loader.FlutterApplicationInfo.flutterAssetsDir' on a null object reference, null, java.lang.NullPointerException: Attempt to read from field 'java.lang.String io.flutter.embedding.engine.loader.FlutterApplicationInfo.flutterAssetsDir' on a null object reference

and also:

[SurfaceTexture-0-23763-0]:391: dequeueBuffer: BufferQueue has been abandoned

Expected behavior

expect to see texture over face

Current behavior

errors Screenshots

it just shows a white screen…

Logs Post logs here or paste them to Ghostbin and insert the link here.

Environment

• Platform: Flutter
• Kit: ar
• Kit Version: newest on flutter pub dev
• OS Version: Harmony OS 2.0
• Android Studio version (if applicable) [e.g. 4.1]
• Platform version: flutter 2.12
• Node Version (if applicable)
• Your Location/Region (if applicable)

Other Add any other context about the problem here

[atavci]

Hello again,

Thank you for providing the logs, we have found out that the FlutterLoader class’ getInstance method that used for obtaining the texture image asset has been deprecated on the newer Flutter versions which causes this error.

To fix the issue navigate to ARSceneView.java file,

Add the following import to the top of the file:

import io.flutter.FlutterInjector;

Then you can change the line on ARSceneView.java:163 from:

String texturePath = sceneConfig.getString(TEXTURE_PATH).equals("null")
        ? "texture.png"
        : FlutterLoader.getInstance().getLookupKeyForAsset(sceneConfig.getString(TEXTURE_PATH));

to:

String texturePath = sceneConfig.getString(TEXTURE_PATH).equals("null")
        ? "texture.png"
        : FlutterInjector.instance().flutterLoader().getLookupKeyForAsset(sceneConfig.getString(TEXTURE_PATH));

This change should fix the error and we will also update the package on the next release of this plugin.

Thank you for your contribution 👍 and have a good day.

[atavci]

The ARFaceScene would draw the 3D face and then will attach the texture, the image you are using is the texture for a 3D Object so it is not compatible for a face filter. Also If you want to customize the filter for your needs you can navigate to the FaceGeometryDisplay.java file and add your custom rendering code. The example shown here is just a showcase for the Face Tracking feature of the AR Engine.