Package com.esri.arcgisruntime.mapping.view

Class PinchToZoomGestureDetector

java.lang.Object

com.esri.arcgisruntime.mapping.view.PinchToZoomGestureDetector

public final class PinchToZoomGestureDetector
extends java.lang.Object

Implements a scale gesture detector for pinch-to-zoom gestures which can be used as an alternative to ScaleGestureDetector with the DefaultMapViewOnTouchListener. Touch events need to be passed to the onTouchEvent(MotionEvent) method, which determines if a pinch-to-zoom gesture is in progress, which will zoom the associated MapView in or out.

Since:

100.9.0

See Also:

DefaultMapViewOnTouchListener.setPinchToZoomGestureDetector(PinchToZoomGestureDetector)

Constructor Summary

Constructors

Constructor	Description
PinchToZoomGestureDetector(MapView mapView)	Creates a PinchToZoomGestureDetector with a MapView.

Method Summary

Modifier and Type	Method	Description
boolean	onTouchEvent(android.view.MotionEvent event)	Determines if the specified motion event is part of a pinch-to-zoom gesture, in which case the associated MapView will be zoomed in or out depending on the current scale of the pinch gesture.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PinchToZoomGestureDetector

public PinchToZoomGestureDetector(MapView mapView)

Creates a PinchToZoomGestureDetector with a MapView.

Parameters:

mapView - the MapView on which to apply pinch-to-zoom gestures

Throws:

java.lang.IllegalArgumentException - if mapView is null

Since:

100.9.0

Method Detail

onTouchEvent

public boolean onTouchEvent(android.view.MotionEvent event)

Determines if the specified motion event is part of a pinch-to-zoom gesture, in which case the associated MapView will be zoomed in or out depending on the current scale of the pinch gesture. This method needs to be called when a touch event is dispatched to the associated MapView, typically this will be done by a View.OnTouchListener which receives the touch events.

Parameters:

event - the MotionEvent object containing information about the gesture

Returns:

true if this gesture detector has consumed the event; false otherwise

Since:

100.9.0