com.facebook.react.touch

Class JSResponderHandler

java.lang.Object

com.facebook.react.touch.JSResponderHandler

All Implemented Interfaces:

OnInterceptTouchEventListener

public class JSResponderHandler
extends java.lang.Object
implements OnInterceptTouchEventListener

This class coordinates JSResponder commands for UIManagerModule. It should be set as OnInterceptTouchEventListener for all newly created native views that implements ReactInterceptingViewGroup and thanks to the information whether JSResponder is set and to which view it will correctly coordinate the return values of OnInterceptTouchEventListener such that touch events will be dispatched to the view selected by JS gesture recognizer. Single CatalystInstance should reuse same instance of this class.

Constructor Summary

Constructors

Constructor and Description
JSResponderHandler()

Method Summary

Methods

Modifier and Type	Method and Description
void	clearJSResponder()
boolean	onInterceptTouchEvent(android.view.ViewGroup v, android.view.MotionEvent event) Called when a onInterceptTouch is invoked on a view group
void	setJSResponder(int tag, android.view.ViewParent viewParentBlockingNativeResponder)

Methods inherited from class java.lang.Object

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

Constructor Detail

JSResponderHandler

public JSResponderHandler()

Method Detail

setJSResponder

public void setJSResponder(int tag,
                  @Nullable
                  android.view.ViewParent viewParentBlockingNativeResponder)

clearJSResponder

public void clearJSResponder()

onInterceptTouchEvent

public boolean onInterceptTouchEvent(android.view.ViewGroup v,
                            android.view.MotionEvent event)

Description copied from interface: OnInterceptTouchEventListener

Called when a onInterceptTouch is invoked on a view group

Specified by:

onInterceptTouchEvent in interface OnInterceptTouchEventListener

Parameters:

v - The view group the onInterceptTouch has been called on

event - The motion event being dispatched down the hierarchy.

Returns:

Return true to steal motion event from the children and have the dispatched to this view, or return false to allow motion event to be delivered to children view