To bind event handlers to shapes on a mobile device with Konva, we can use the on() method. The on() method requires an event type and a function to be executed when the event occurs. Konva supports touchstart, touchmove, touchend, tap, dbltap, dragstart, dragmove, and dragend mobile events.
For more complex gestures like rotate take a look into Gestures Demo.
Note: This example only works on iOS and Android mobile devices because it makes use of touch events rather than mouse events.
Instructions: move your finger across the triangle to see touch coordinates and touch start and touch end the circle.