PanResponder: The Gesture State Machine
PanResponder turns raw touch events into a single, stateful gesture, like dragging an object. It's used to build draggable elements by providing a `gestureState` object with velocity and distance. The footgun is confusing `moveX/Y` with `dx/dy`.
PanResponder is React Native's state machine for gestures, turning raw touches into a single, coherent action like a drag. It provides a `gestureState` object with calculated values like accumulated distance (`dx`, `dy`) and velocity, perfect for draggable UI. The main footgun is the lifecycle: you must first request to *be* the responder (`onMoveShouldSetPanResponder`) before you can actually handle the move event (`onPanResponderMove`).
Read the original → reactnative.dev
- #react-native
- #gestures
- #ui
- #animation
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