I'm working on optimizing frame rendering and UI updates in an Android application, and I'm trying to understand the difference between Choreographer.postFrameCallback and Choreographer.postVsyncCallback.

From my understanding:

Choreographer.postFrameCallback(Runnable r): Schedules a callback to be executed on the next frame.

Choreographer.postVsyncCallback(Runnable r): Appears to be related to syncing with vsync, but I'm not sure how it differs in behavior from postFrameCallback.

My questions are:

1. What are the key differences between postFrameCallback and postVsyncCallback?
2. Are there specific use cases where one is preferable over the other?
3. If I'm performing animations or drawing operations, which method should I use for optimal performance?

Any clarification on when to use each method would be greatly appreciated!