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The React Native Gesture Handler State Machine

Source: docs.swmansion.comintermediate

Think of a gesture handler as a state machine with six states. This lets you react to specific moments in a gesture's lifecycle—like `BEGAN` or `ACTIVE`—not just a single event. The footgun: ignoring the `CANCELLED` state, which can leave your UI broken.

A gesture handler is a state machine that progresses through six distinct states as it interprets user touches. This model allows you to build complex UI by reacting to a gesture's full lifecycle—triggering an animation when it becomes `ACTIVE`, finalizing a position when it `END`s, and resetting if it `FAIL`s. The most common footgun is ignoring the `CANCELLED` state. If a parent `ScrollView` interrupts your gesture, it becomes `CANCELLED`, not `END`, potentially leaving your UI in a broken state.

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The React Native Gesture Handler State Machine · Tezvyn