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added in API level 1

GestureDetector.SimpleOnGestureListener

public static class GestureDetector.SimpleOnGestureListener
extends Object implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener, GestureDetector.OnContextClickListener

java.lang.Object
   ↳ android.view.GestureDetector.SimpleOnGestureListener


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

Summary

Public constructors

GestureDetector.SimpleOnGestureListener()

Public methods

boolean onContextClick(MotionEvent e)

Notified when a context click occurs.

boolean onDoubleTap(MotionEvent e)

Notified when a double-tap occurs.

boolean onDoubleTapEvent(MotionEvent e)

Notified when an event within a double-tap gesture occurs, including the down, move, and up events.

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 onLongPress(MotionEvent e)

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

boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY)

Notified when a scroll occurs with the initial on down MotionEvent and the current move MotionEvent.

void onShowPress(MotionEvent e)

The user has performed a down MotionEvent and not performed a move or up yet.

boolean onSingleTapConfirmed(MotionEvent e)

Notified when a single-tap occurs.

boolean onSingleTapUp(MotionEvent e)

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

Inherited methods

Public constructors

GestureDetector.SimpleOnGestureListener

added in API level 1
public GestureDetector.SimpleOnGestureListener ()

Public methods

onContextClick

added in API level 23
public boolean onContextClick (MotionEvent e)

Notified when a context click occurs.

Parameters
e MotionEvent: The motion event that occurred during the context click.

Returns
boolean true if the event is consumed, else false

onDoubleTap

added in API level 3
public boolean onDoubleTap (MotionEvent e)

Notified when a double-tap occurs.

Parameters
e MotionEvent: The down motion event of the first tap of the double-tap.

Returns
boolean true if the event is consumed, else false

onDoubleTapEvent

added in API level 3
public boolean onDoubleTapEvent (MotionEvent e)

Notified when an event within a double-tap gesture occurs, including the down, move, and up events.

Parameters
e MotionEvent: The motion event that occurred during the double-tap gesture.

Returns
boolean true if the event is consumed, else false

onDown

added in API level 1
public boolean onDown (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.

Parameters
e MotionEvent: The down motion event.

Returns
boolean

onFling

added in API level 1
public 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. The calculated velocity is supplied along the x and y axis in pixels per second.

Parameters
e1 MotionEvent: The first down motion event that started the fling.

e2 MotionEvent: The move motion event that triggered the current onFling.

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

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

Returns
boolean true if the event is consumed, else false

onLongPress

added in API level 1
public void onLongPress (MotionEvent e)

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

Parameters
e MotionEvent: The initial on down motion event that started the longpress.

onScroll

added in API level 1
public boolean onScroll (MotionEvent e1, 
                MotionEvent e2, 
                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.

Parameters
e1 MotionEvent: The first down motion event that started the scrolling.

e2 MotionEvent: The move motion event that triggered the current onScroll.

distanceX float: 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 float: 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
boolean true if the event is consumed, else false

onShowPress

added in API level 1
public void onShowPress (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.

Parameters
e MotionEvent: The down motion event

onSingleTapConfirmed

added in API level 3
public boolean onSingleTapConfirmed (MotionEvent e)

Notified when a single-tap occurs.

Unlike GestureDetector.OnGestureListener.onSingleTapUp(MotionEvent), this will only be called after the detector is confident that the user's first tap is not followed by a second tap leading to a double-tap gesture.

Parameters
e MotionEvent: The down motion event of the single-tap.

Returns
boolean true if the event is consumed, else false

onSingleTapUp

added in API level 1
public boolean onSingleTapUp (MotionEvent e)

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

Parameters
e MotionEvent: The up motion event that completed the first tap

Returns
boolean true if the event is consumed, else false