Map "settling" animation doesn't cancel with cancelTransitions

[sddamico]

I'm writing a method to prevent the camera from exiting a certain bounds (workaround for #3602). "Pseudocode":

Bounds constraintBounds = new Bounds(...);

mapView.postOnAnimation(() -> {
  checkBounds();
  mapView.postOnAnimation(this);
});

checkBounds() {
  CameraPosition cameraPosition = map.getCameraPosition();
  Bounds visibleBounds = map.getVisibleBounds(); 

  if (visibleBounds.outside(constraintBounds)) {
    map.moveCamera(CameraUpdateFactory.newLatLng(cameraPosition.plus(contraintBounds.diff(visibleBounds)));
  }
}

This works for the most part except for during the "settling" animation that occurs after a swipe.

Platform: Android
Mapbox SDK version: 4.2.0-SNAPSHOT

Steps to trigger behavior

1. Write bounds checking/camera updating method similar to above
2. Try to enable settling animation by swiping rapidly on map view

Expected behavior

moveCamera()'s call to cancelTransitions() would cancel settling animation, preventing camera from exiting bounds.

Actual behavior

Animation continues.

[tobrun]

Adding this to the 4.2.0 milestone since we have had some requests around this feature.

[tobrun]

Looked into this and seemed different than I initially thought. Moving it of the milestone for now, the issue I looked in is PR'ed in #6891. @sddamico have you tried hooking into using MapboxMap.OnFlingListener? This is called as part of the swipe/fling.

[sddamico]

@tobrun I had tried the fling listener previously, yes. My issue here was that calling moveCamera on every frame should cancel a running animation.

[sddamico]

The thing that I was trying to do is now solved with viewport restrictions, closing.