com.globusltd.recyclerview.view

Class EnchancedGestureDetector

java.lang.Object

com.globusltd.recyclerview.view.EnchancedGestureDetector

All Implemented Interfaces:

GestureDetector.OnGestureListener

public final class EnchancedGestureDetector
extends Object
implements GestureDetector.OnGestureListener

Detects various gestures and events using the supplied MotionEvents. The EnchancedGestureDetector.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).

To use this class:

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

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	EnchancedGestureDetector.OnGestureListener The listener that is used to notify when gestures occur.
static class	EnchancedGestureDetector.SimpleOnGestureListener A convenience class to extend when you only want to listen for a subset of all the gestures.

Constructor Summary

Constructors

Constructor and Description
EnchancedGestureDetector(Context context, EnchancedGestureDetector.OnGestureListener listener) Creates a EnchancedGestureDetector with the supplied listener.

Method Summary

Modifier and Type	Method and Description
boolean	onDown(MotionEvent e)
boolean	onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
void	onLongPress(MotionEvent e)
boolean	onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY)
void	onShowPress(MotionEvent e)
boolean	onSingleTapUp(MotionEvent e)
boolean	onTouchEvent(MotionEvent e) Analyzes the given motion event and if applicable triggers the appropriate callbacks on the EnchancedGestureDetector.OnGestureListener supplied.
void	setLongpressEnabled(boolean enabled) Set whether longpress is enabled, if this is enabled when a user presses and holds down you get a longpress event and nothing further.

Methods inherited from class java.lang.Object

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

Constructor Detail

EnchancedGestureDetector

public EnchancedGestureDetector(@NonNull
                                Context context,
                                @NonNull
                                EnchancedGestureDetector.OnGestureListener listener)

Creates a EnchancedGestureDetector with the supplied listener.

Parameters:

context - the application's context

listener - the listener invoked for all the callbacks, this must not be null.

Method Detail

setLongpressEnabled

public void setLongpressEnabled(boolean enabled)

Set whether longpress is enabled, if this is enabled when a user presses and holds down you get a longpress event and nothing further. If it's disabled the user can press and hold down and then later moved their finger and you will get scroll events. By default longpress is enabled.

Parameters:

enabled - whether longpress should be enabled.

onTouchEvent

public boolean onTouchEvent(@NonNull
                            MotionEvent e)

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

Parameters:

e - The current motion event.

Returns:

true if the EnchancedGestureDetector.OnGestureListener consumed the event, else false.

onDown

public boolean onDown(@NonNull
                      MotionEvent e)

Specified by:

onDown in interface GestureDetector.OnGestureListener

onFling

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

Specified by:

onFling in interface GestureDetector.OnGestureListener

onLongPress

public void onLongPress(@NonNull
                        MotionEvent e)

Specified by:

onLongPress in interface GestureDetector.OnGestureListener

onScroll

public boolean onScroll(@NonNull
                        MotionEvent e1,
                        @NonNull
                        MotionEvent e2,
                        float distanceX,
                        float distanceY)

Specified by:

onScroll in interface GestureDetector.OnGestureListener

onShowPress

public void onShowPress(@NonNull
                        MotionEvent e)

Specified by:

onShowPress in interface GestureDetector.OnGestureListener

onSingleTapUp

public boolean onSingleTapUp(@NonNull
                             MotionEvent e)

Specified by:

onSingleTapUp in interface GestureDetector.OnGestureListener