belongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1
SnapHelper
public
abstract
class
SnapHelper
extends RecyclerView.OnFlingListener
| java.lang.Object | ||
| ↳ | android.support.v7.widget.RecyclerView.OnFlingListener | |
| ↳ | android.support.v7.widget.SnapHelper | |
Known Direct Subclasses
|
Class intended to support snapping for a RecyclerView.
SnapHelper tries to handle fling as well but for this to work properly, the
RecyclerView.LayoutManager must implement the RecyclerView.SmoothScroller.ScrollVectorProvider interface or
you should override onFling(int, int) and handle fling manually.
Summary
Public constructors | |
|---|---|
SnapHelper()
|
|
Public methods | |
|---|---|
void
|
attachToRecyclerView(RecyclerView recyclerView)
Attaches the |
abstract
int[]
|
calculateDistanceToFinalSnap(RecyclerView.LayoutManager layoutManager, View targetView)
Override this method to snap to a particular point within the target view or the container view on any axis. |
int[]
|
calculateScrollDistance(int velocityX, int velocityY)
Calculated the estimated scroll distance in each direction given velocities on both axes. |
abstract
View
|
findSnapView(RecyclerView.LayoutManager layoutManager)
Override this method to provide a particular target view for snapping. |
abstract
int
|
findTargetSnapPosition(RecyclerView.LayoutManager layoutManager, int velocityX, int velocityY)
Override to provide a particular adapter target position for snapping. |
boolean
|
onFling(int velocityX, int velocityY)
Override this to handle a fling given the velocities in both x and y directions. |
Protected methods | |
|---|---|
RecyclerView.SmoothScroller
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createScroller(RecyclerView.LayoutManager layoutManager)
Creates a scroller to be used in the snapping implementation. |
LinearSmoothScroller
|
createSnapScroller(RecyclerView.LayoutManager layoutManager)
This method was deprecated
in API level 26.1.0.
use |
Inherited methods | |
|---|---|
From
class
android.support.v7.widget.RecyclerView.OnFlingListener
| |