How Android(安卓)Handles Touches
16lz
2021-01-25
Touch System overview
Touch Event Framework
Custom Touch Handling
System Provided Touch Handlers
System Provided Gesture Handlers
Event metadat: Touch location/Number of pointers/Event time.
A gesture is defined as beginning with Action_DOWN, and end with ACTION_UP
Event start at the Activity with dispatchTouchEvent();
Event must be consumed by consuming ACTIONDOWN
onTouchEvent();
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