core/androidx.core.view/[main]GestureDetectorCompat

GestureDetectorCompat

Deprecated

Use android.view.GestureDetector directly

Detects various gestures and events using the supplied MotionEvents. The OnGestureListener callback will notify users when a particular motion event has occurred. This class should only be used with MotionEvents reported via touch (don't use for trackball events).

This compatibility implementation of the framework's GestureDetector guarantees the newer focal point scrolling behavior from Jellybean MR1 on all platform versions.

To use this class:

Create an instance of the GestureDetectorCompat for your View
In the onTouchEvent method ensure you call onTouchEvent. The methods defined in your callback will be executed when the events occur.

Constructors

GestureDetectorCompat

constructor(@NonNull context: Context, @NonNull listener: GestureDetector.OnGestureListener)

Creates a GestureDetectorCompat with the supplied listener.

constructor(@NonNull context: Context, @NonNull listener: GestureDetector.OnGestureListener, @Nullable handler: Handler)

Creates a GestureDetectorCompat with the supplied listener.

Functions

isLongpressEnabled

open fun isLongpressEnabled(): Boolean

onTouchEvent

open fun onTouchEvent(@NonNull event: MotionEvent): Boolean

Analyzes the given motion event and if applicable triggers the appropriate callbacks on the OnGestureListener supplied.

setIsLongpressEnabled

open fun setIsLongpressEnabled(enabled: Boolean)

Set whether longpress is enabled, if this is enabled when a user presses and holds down you get a longpress event and nothing further.

setOnDoubleTapListener

open fun setOnDoubleTapListener(@Nullable listener: GestureDetector.OnDoubleTapListener)

Sets the listener which will be called for double-tap and related gestures.