Accessibility service: get views you can interact with instantly (same as Voice Access)?

The key point is that in an AccessibilityService.onAccessibilityEvent() the tree hierarchy is not final. To get views that are interactable at the moment, AccessibilityService.getRootInActiveWindow() should be called with a delay.

AccessibilityNodeInfo#getDrawingOrder() will probably help you. Note that you need to do tree traversal to determine what is on top of what.

There are still corner cases with transparent views that will give you trouble, but that should get you 95% of the way there. We're working on a better answer for that case.