onSerialTapUp property Null safety

GestureSerialTapUpCallback? onSerialTapUp
read / write

A pointer has stopped contacting the screen at a particular location, representing a serial tap.

If the user didn't complete the tap, or if another recognizer won the arena, then onSerialTapCancel is called instead.

The SerialTapUpDetails.count that is passed to this callback specifies the series tap count and will match the SerialTapDownDetails.count that was passed to the onSerialTapDown callback.


GestureSerialTapUpCallback? onSerialTapUp;