Understand touch event mechanics and master gestures
summary
Explains how Jetpack Compose detects and handles touch events and gestures, covering simple APIs like onClick, the detectGestures API, and how to build custom gesture detection. Describes event propagation, sharing vs. owning events, distinguishing taps from scrolls, handling canceled touch events, and implementing fling inertia; uses the open-source Zoomable Compose library as a concrete example for resolving gesture conflicts between an image pinch-zoom and a parent Pager scroll.
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chapters (7)
- 0:00Introduction
- 3:11Compose gesture API
- 7:30Custom gesture
- 15:26Event propagation
- 18:35Pitfalls and fixes
- 26:07Zoom conflict avoidance
- 37:35Summary
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