com.globusltd.recyclerview.view

Class EnchancedGestureDetector.SimpleOnGestureListener

java.lang.Object

com.globusltd.recyclerview.view.EnchancedGestureDetector.SimpleOnGestureListener

All Implemented Interfaces:

EnchancedGestureDetector.OnGestureListener

Enclosing class:

EnchancedGestureDetector

public static class EnchancedGestureDetector.SimpleOnGestureListener
extends Object
implements EnchancedGestureDetector.OnGestureListener

A convenience class to extend when you only want to listen for a subset of all the gestures. This implements all methods in the EnchancedGestureDetector.OnGestureListener but does nothing and return false for all applicable methods.

Constructor Summary

Constructors

Constructor and Description
SimpleOnGestureListener()

Method Summary

Modifier and Type	Method and Description
boolean	onDown(MotionEvent e) Notified when a tap occurs with the down MotionEvent that triggered it.
boolean	onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) Notified of a fling event when it occurs with the initial on down MotionEvent and the matching up MotionEvent.
void	onHidePress() The user has performed a move or up MotionEvent.
void	onLongPress(MotionEvent e) Notified when a long press occurs with the initial on down MotionEvent that trigged it.
boolean	onScroll(MotionEvent first, MotionEvent previous, MotionEvent current, float distanceX, float distanceY) Notified when a scroll occurs with the initial on down MotionEvent and the current move MotionEvent.
boolean	onScrollBegin(MotionEvent e) Notified when a scroll begins with the initial on down MotionEvent
void	onShowPress(MotionEvent e) The user has performed a down MotionEvent and not performed a move or up yet.
boolean	onSingleTapUp(MotionEvent e) Notified when a tap occurs with the up MotionEvent that triggered it.
void	onUp(MotionEvent e)

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleOnGestureListener

public SimpleOnGestureListener()

Method Detail

onDown

public boolean onDown(@NonNull
                      MotionEvent e)

Notified when a tap occurs with the down MotionEvent that triggered it. This will be triggered immediately for every down event. All other events should be preceded by this.

Specified by:

onDown in interface EnchancedGestureDetector.OnGestureListener

Parameters:

e - The down motion event.

onShowPress

public void onShowPress(@NonNull
                        MotionEvent e)

The user has performed a down MotionEvent and not performed a move or up yet. This event is commonly used to provide visual feedback to the user to let them know that their action has been recognized i.e. highlight an element.

Specified by:

onShowPress in interface EnchancedGestureDetector.OnGestureListener

Parameters:

e - The down motion event

onSingleTapUp

public boolean onSingleTapUp(@NonNull
                             MotionEvent e)

Notified when a tap occurs with the up MotionEvent that triggered it.

Specified by:

onSingleTapUp in interface EnchancedGestureDetector.OnGestureListener

Parameters:

e - The up motion event that completed the first tap

Returns:

true if the event is consumed, else false

onLongPress

public void onLongPress(@NonNull
                        MotionEvent e)

Notified when a long press occurs with the initial on down MotionEvent that trigged it.

Specified by:

onLongPress in interface EnchancedGestureDetector.OnGestureListener

Parameters:

e - The initial on down motion event that started the longpress.

onFling

public boolean onFling(@NonNull
                       MotionEvent e1,
                       @NonNull
                       MotionEvent e2,
                       float velocityX,
                       float velocityY)

Notified of a fling event when it occurs with the initial on down MotionEvent and the matching up MotionEvent. The calculated velocity is supplied along the x and y axis in pixels per second.

Specified by:

onFling in interface EnchancedGestureDetector.OnGestureListener

Parameters:

e1 - The first down motion event that started the fling.

e2 - The move motion event that triggered the current onFling.

velocityX - The velocity of this fling measured in pixels per second along the x axis.

velocityY - The velocity of this fling measured in pixels per second along the y axis.

Returns:

true if the event is consumed, else false

onScrollBegin

public boolean onScrollBegin(@NonNull
                             MotionEvent e)

Notified when a scroll begins with the initial on down MotionEvent

Specified by:

onScrollBegin in interface EnchancedGestureDetector.OnGestureListener

Parameters:

e - The first down motion event that started the scrolling.e1

Returns:

true if the event is consumed, else false.

onScroll

public boolean onScroll(@NonNull
                        MotionEvent first,
                        @NonNull
                        MotionEvent previous,
                        @NonNull
                        MotionEvent current,
                        float distanceX,
                        float distanceY)

Notified when a scroll occurs with the initial on down MotionEvent and the current move MotionEvent. The distance in x and y is also supplied for convenience.

Specified by:

onScroll in interface EnchancedGestureDetector.OnGestureListener

Parameters:

first - The first down motion event that started the scrolling.

previous - The move motion event that happen before the current event.

current - The move motion event that triggered the current onScroll.

distanceX - The distance along the X axis that has been scrolled since the last call to onScroll. This is NOT the distance between e1 and e2.

distanceY - The distance along the Y axis that has been scrolled since the last call to onScroll. This is NOT the distance between e1 and e2.

Returns:

true if the event is consumed, else false

onHidePress

public void onHidePress()

The user has performed a move or up MotionEvent. This event is commonly used to provide visual feedback to the user to let them know that their primary action has been cancelled i.e. remove highlight from an element.

Specified by:

onHidePress in interface EnchancedGestureDetector.OnGestureListener

onUp

public void onUp(@NonNull
                 MotionEvent e)

Specified by:

onUp in interface EnchancedGestureDetector.OnGestureListener