Added in API level 1

SimpleOnGestureListener

open class SimpleOnGestureListener : GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener, GestureDetector.OnContextClickListener
kotlin.Any
   ↳ 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 OnGestureListener, OnDoubleTapListener, and OnContextClickListener but does nothing and return false for all applicable methods.

Summary

Public constructors

Public methods
open Boolean

Notified when a context click occurs.
open Boolean

Notified when a double-tap occurs.
open Boolean

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

Notified when a tap occurs with the down MotionEvent that triggered it.
open Boolean
onFling(e1: MotionEvent?, e2: MotionEvent, velocityX: Float, velocityY: Float)

Notified of a fling event when it occurs with the initial on down MotionEvent and the matching up MotionEvent.
open Unit

Notified when a long press occurs with the initial on down MotionEvent that trigged it.
open Boolean
onScroll(e1: MotionEvent?, e2: MotionEvent, distanceX: Float, distanceY: Float)

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

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

Notified when a single-tap occurs.
open Boolean

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

Public constructors

SimpleOnGestureListener

SimpleOnGestureListener()

Public methods

onContextClick

Added in API level 23
open fun onContextClick(e: MotionEvent): Boolean

Notified when a context click occurs.

Parameters
e MotionEvent: This value cannot be null.
Return
Boolean true if the event is consumed, else false

onDoubleTap

Added in API level 3
open fun onDoubleTap(e: MotionEvent): Boolean

Notified when a double-tap occurs. Triggered on the down event of second tap.

Parameters
e MotionEvent: This value cannot be null.
Return
Boolean true if the event is consumed, else false

onDoubleTapEvent

Added in API level 3
open fun onDoubleTapEvent(e: MotionEvent): Boolean

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

Parameters
e MotionEvent: This value cannot be null.
Return
Boolean true if the event is consumed, else false

onDown

Added in API level 1
open fun onDown(e: MotionEvent): Boolean

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: This value cannot be null.

onFling

Added in API level 1
open fun onFling(
    e1: MotionEvent?, 
    e2: MotionEvent, 
    velocityX: Float, 
    velocityY: Float
): Boolean

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?: This value may be null.
e2 MotionEvent: This value cannot be null.
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.
Return
Boolean true if the event is consumed, else false

onLongPress

Added in API level 1
open fun onLongPress(e: MotionEvent): Unit

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

Parameters
e MotionEvent: This value cannot be null.

onScroll

Added in API level 1
open fun onScroll(
    e1: MotionEvent?, 
    e2: MotionEvent, 
    distanceX: Float, 
    distanceY: Float
): Boolean

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?: This value may be null.
e2 MotionEvent: This value cannot be null.
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.
Return
Boolean true if the event is consumed, else false

onShowPress

Added in API level 1
open fun onShowPress(e: MotionEvent): Unit

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: This value cannot be null.

onSingleTapConfirmed

Added in API level 3
open fun onSingleTapConfirmed(e: MotionEvent): Boolean

Notified when a single-tap occurs.

Unlike 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: This value cannot be null.
Return
Boolean true if the event is consumed, else false

onSingleTapUp

Added in API level 1
open fun onSingleTapUp(e: MotionEvent): Boolean

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

Parameters
e MotionEvent: This value cannot be null.
Return
Boolean true if the event is consumed, else false