mapbox / mapbox/mapbox-maps-flutter
I'm trying to add an image (Uint8List) to the maps style, but i get a error: Throwable, java.lang.Throwable: mismatched image size, Cause: null, Stacktrace: java.lang.Throwable: mismatched image size
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- Dart
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Description
I'm trying to add an image (Uint8List) to the maps style, so that I can reference it later in a feature when I assemble a source geojson. This is what I tried:
Andriod 13.0.
```dart
ByteData byteData =
await rootBundle.load('assets/map_icons/home.png');
Uint8List image = byteData.buffer.asUint8List();
// So far everything is okay, the list is correct.
// But here I struggle with understanding what half of the properties do. The next line throws an error.
await mapController.style.addStyleImage(
assetName, // A string (which I later use to reference the image in a geojson source)
1,
MbxImage(width: 50, height: 50, data: image),
false,
[],
[],
null,
);
```
The error thrown is:
```dart
PlatformException (PlatformException(Throwable, java.lang.Throwable: mismatched image size, Cause: null, Stacktrace: java.lang.Throwable: mismatched image size
at com.mapbox.maps.mapbox_maps.StyleController.addStyleImage$lambda-49(StyleController.kt:641)
at com.mapbox.maps.mapbox_maps.StyleController.$r8$lambda$9qzAKUZTMYPcXQ8_jKe8hkSxnyU(Unknown Source:0)
at com.mapbox.maps.mapbox_maps.StyleController$$ExternalSyntheticLambda0.onStyleLoaded(Unknown Source:17)
at com.mapbox.maps.MapboxMap.getStyle(MapboxMap.kt:355)
at com.mapbox.maps.mapbox_maps.StyleController.addStyleImage(StyleController.kt:610)
at com.mapbox.maps.mapbox_maps.StyleController.addStyleImage(StyleController.kt:17)
at com.mapbox.maps.pigeons.FLTMapInterfaces$StyleManager$-CC.lambda$setup$34(FLTMapInterfaces.java:7898)
at com.mapbox.maps.pigeons.FLTMapInterfaces$StyleManager$$ExternalSyntheticLambda20.onMessage(Unknown Source:2)
at io.flutter.plugin.common.BasicMessageChannel$IncomingMessageHandler.onMessage(BasicMessageChannel.java:217)
at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:250)
at android.app.ActivityThread.main(ActivityThread.java:7806)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:958)
, null))
```
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The report names the Flutter addStyleImage call and the Android StyleController.kt stack-trace entry, but no repository file or test. Start by checking the MbxImage and addStyleImage documentation and the image dimensions represented by the PNG bytes. Done means the image registers without the mismatched image size exception and can be referenced from the GeoJSON source.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android, dart, flutter
- Domain
- mobile-dev
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100