Window content transitions explained
summary
Explains how to build a reusable circular‑reveal shared‑element transition by subclassing Transition (override captureStart/end and createAnimator), using ViewAnimationUtils and a no-pause animator workaround, and wiring it via ActivityOptionsCompat with transition names. Covers practical fixes: use postponeEnterTransition + ViewTreeObserver pre-draw for async content, shared element callbacks to map/remap or reject elements, handling orientation and fragments, and shows the implementation working end‑to‑end.
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chapters (14)
- 0:00Introduction to transitions
- 1:59Basic transition principles
- 4:05Transition types and pairs
- 5:15Built-in transition types
- 8:05Postponing transitions
- 9:52Fragment transition specifics
- 11:34Shared element callbacks
- 14:02Creating custom transitions
- 19:20Reusable transition setup
- 26:17Less common transition techniques
- 28:23Handling window decorations
- 30:08Orientation change transitions
- 32:22Remapping shared elements
- 35:23Q&A session
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