Couldn't find Type for class 'com.badlogic.gdx.maps.objects.RectangleMapObject'

Question

Ok, so I made a simple game in libgdx (Android Studio). It works on desktop as well as on Android but in html throws this error :

Uncaught Error: java.lang.RuntimeException: java.lang.RuntimeException: Couldn't find Type for class 'com.badlogic.gdx.maps.objects.RectangleMapObject'

The only code that uses RectangleMapObject in my code is this:

for(MapObject mapObject: tiledMap.getLayers().get(1).getObjects().getByType(RectangleMapObject.class)){
        Rectangle rectangle = ((RectangleMapObject)mapObject).getRectangle();
        createGround(rectangle.getX()/ 70f, rectangle.getY() / 70f, rectangle.getWidth() / 70f, rectangle.getHeight()/70f);
}

I spent almost two days trying to make it work and found nothing. If someone knows the solution to this problem, Its cause or anything like that i would realy appriciate some help :)

Answer 1

Reflection on gwt requires some massaging to work

https://github.com/libgdx/libgdx/wiki/Reflection#gwt

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Add this to your GdxDefinition.gwt.xml :

<extend-configuration-property name="gdx.reflect.include" value="com.badlogic.gdx.maps.objects.RectangleMapObject" />