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Apr 25, 2020 · Mobile Development

How Android’s GestureDetector Detects Double‑Tap and Other Gestures

This article explains the inner workings of Android’s GestureDetector class, detailing how it creates listeners, processes MotionEvent actions, schedules handler messages, and determines the timing and conditions for callbacks such as onDown, onShowPress, onSingleTapUp, onScroll, onLongPress, onFling, and double‑tap events.