added in version 22.1.0
belongs to Maven artifact com.android.support:support-compat:28.0.0-alpha1

Summary: Inherited Constants | Ctors | Methods | Inherited Methods | [Expand All]

ListViewAutoScrollHelper

This package is part of the Android support library which is no longer maintained. The support library has been superseded by AndroidX which is part of Jetpack. We recommend using the AndroidX libraries in all new projects. You should also consider migrating existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library class mappings.

public class ListViewAutoScrollHelper
extends AutoScrollHelper

java.lang.Object
↳	android.support.v4.widget.AutoScrollHelper
	↳	android.support.v4.widget.ListViewAutoScrollHelper

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An implementation of AutoScrollHelper that knows how to scroll through a ListView.

Summary

Inherited constants

From class android.support.v4.widget.AutoScrollHelper int EDGE_TYPE_INSIDE Edge type that specifies an activation area starting at the view bounds and extending inward. int EDGE_TYPE_INSIDE_EXTEND Edge type that specifies an activation area starting at the view bounds and extending inward. int EDGE_TYPE_OUTSIDE Edge type that specifies an activation area starting at the view bounds and extending outward. float NO_MAX Constant passed to setMaximumEdges(float, float), setMaximumVelocity(float, float), or setMinimumVelocity(float, float). float NO_MIN Constant passed to setMaximumEdges(float, float), or setMaximumVelocity(float, float), or setMinimumVelocity(float, float). float RELATIVE_UNSPECIFIED Constant passed to setRelativeEdges(float, float) or setRelativeVelocity(float, float).

Public constructors
ListViewAutoScrollHelper(ListView target)

Public methods
boolean	canTargetScrollHorizontally(int direction) Override this method to return whether the target view can be scrolled horizontally in a certain direction.
boolean	canTargetScrollVertically(int direction) Override this method to return whether the target view can be scrolled vertically in a certain direction.
void	scrollTargetBy(int deltaX, int deltaY) Override this method to scroll the target view by the specified number of pixels.

Inherited methods

From class android.support.v4.widget.AutoScrollHelper abstract boolean canTargetScrollHorizontally(int direction) Override this method to return whether the target view can be scrolled horizontally in a certain direction. abstract boolean canTargetScrollVertically(int direction) Override this method to return whether the target view can be scrolled vertically in a certain direction. boolean isEnabled() boolean isExclusive() Indicates whether the scroll helper handles touch events exclusively during scrolling. boolean onTouch(View v, MotionEvent event) Handles touch events by activating automatic scrolling, adjusting scroll velocity, or stopping. abstract void scrollTargetBy(int deltaX, int deltaY) Override this method to scroll the target view by the specified number of pixels. AutoScrollHelper setActivationDelay(int delayMillis) Sets the delay after entering an activation edge before activation of auto-scrolling. AutoScrollHelper setEdgeType(int type) Sets the activation edge type, one of: EDGE_TYPE