ScrollingView

interface ScrollingView

Known direct subclasses
NestedScrollView

NestedScrollView is just like ScrollView, but it supports acting as both a nested scrolling parent and child on both new and old versions of Android.

RecyclerView

A flexible view for providing a limited window into a large data set.

Known indirect subclasses
BaseGridView

An abstract base class for vertically and horizontally scrolling lists.

HorizontalGridView

A android.view.ViewGroup that shows items in a horizontal scrolling list.

VerticalGridView

A android.view.ViewGroup that shows items in a vertically scrolling list.

WearableRecyclerView

Wearable specific implementation of the RecyclerView enabling setCircularScrollingGestureEnabled circular scrolling} and semi-circular layouts.


An interface that can be implemented by Views to provide scroll related APIs.

Summary

Public methods

abstract int

Compute the horizontal extent of the horizontal scrollbar's thumb within the horizontal range.

abstract int

Compute the horizontal offset of the horizontal scrollbar's thumb within the horizontal range.

abstract int

Compute the horizontal range that the horizontal scrollbar represents.

abstract int

Compute the vertical extent of the vertical scrollbar's thumb within the vertical range.

abstract int

Compute the vertical offset of the vertical scrollbar's thumb within the horizontal range.

abstract int

Compute the vertical range that the vertical scrollbar represents.

Public methods

computeHorizontalScrollExtent

abstract int computeHorizontalScrollExtent()

Compute the horizontal extent of the horizontal scrollbar's thumb within the horizontal range. This value is used to compute the length of the thumb within the scrollbar's track.

The range is expressed in arbitrary units that must be the same as the units used by computeHorizontalScrollRange and computeHorizontalScrollOffset.

The default extent is the drawing width of this view.

Returns
int

the horizontal extent of the scrollbar's thumb