<p>Compute the horizontal range that the horizontal scrollbar represents.</p> <p>The range is expressed in arbitrary units that must be the same as t

<p>Override this method if you want to support scroll bars.</p> <p>Read {@link RecyclerView#computeHorizontalScrollRange()} for details.</p> <p>Defa

Should calculate the vector that points to the direction where the target position can be found. <p> This method is used by the {@link LinearSmoothScr

<p>Compute the vertical extent of the vertical scrollbar's thumb within the vertical range. This value is used to compute the length of the thumb with

<p>Override this method if you want to support scroll bars.</p> <p>Read {@link RecyclerView#computeVerticalScrollExtent()} for details.</p> <p>Defau

<p>Compute the vertical offset of the vertical scrollbar's thumb within the vertical range. This value is used to compute the length of the thumb with

<p>Override this method if you want to support scroll bars.</p> <p>Read {@link RecyclerView#computeVerticalScrollOffset()} for details.</p> <p>Defau

<p>Compute the vertical range that the vertical scrollbar represents.</p> <p>The range is expressed in arbitrary units that must be the same as the u

<p>Override this method if you want to support scroll bars.</p> <p>Read {@link RecyclerView#computeVerticalScrollRange()} for details.</p> <p>Defaul

RecyclerView provides artificial position range (item count) in pre-layout state and automatically maps these positions to {@link Adapter} positions w

Detach a child view and add it to a {@link Recycler Recycler's} scrap heap. <p>Scrapping a view allows it to be rebound and reused to show updated or

Detach a child view and add it to a {@link Recycler Recycler's} scrap heap. <p>Scrapping a view allows it to be rebound and reused to show updated or

Temporarily detach a child view. <p>LayoutManagers may want to perform a lightweight detach operation to rearrange views currently attached to the Re

@return true if the structure of the data set has changed since the last call to onLayoutChildren, false otherwise

Method to be called by subclasses when an animation is finished. <p> For each call RecyclerView makes to {@link #animateAppearance(ViewHolder, ItemHol

Method to be called by subclasses when an animation is started. <p> For each call RecyclerView makes to {@link #animateAppearance(ViewHolder, ItemHold

This method should be called by ItemAnimator implementations to notify any listeners that all pending and active item animations are finished.

Override to prevent thawing of any views created by the adapter.

Override to prevent freezing of any views created by the adapter.

Ends all animations on the view created by the {@link ItemAnimator}. @param view The View for which the animations should be ended. @see RecyclerView

Find the topmost view under the given point. @param x Horizontal position in pixels to search @param y Vertical position in pixels to search @return

Traverses the ancestors of the given view and returns the item view that contains it and also a direct child of the LayoutManager. <p> Note that this

Returns the adapter position of the first fully visible view. This position does not include adapter changes that were dispatched after the last layou

Returns the adapter position of the last fully visible view. This position does not include adapter changes that were dispatched after the last layout

Return the ViewHolder for the item in the given position of the data set as of the latest layout pass. <p> This method checks only the children of Rec

Since RecyclerView is a collection ViewGroup that includes virtual children (items that are in the Adapter but not visible in the UI), it employs a mo

Create a default <code>LayoutParams</code> object for a child of the RecyclerView. <p>LayoutManagers will often want to use a custom <code>LayoutPara

{@inheritDoc}

Create a LayoutParams object suitable for this LayoutManager, copying relevant values from the supplied LayoutParams object if possible. <p><em>Impor

Gets the current duration for which all add animations will run. @return The current add duration

<p>Return the offset of the RecyclerView's text baseline from the its top boundary. If the LayoutManager of this RecyclerView does not support baselin

Returns offset of the RecyclerView's text baseline from the its top boundary. @return The offset of the RecyclerView's text baseline from the its top

Gets the current duration for which all change animations will run. @return The current change duration

@see RecyclerView.LayoutManager#getChildCount()

Return the stable item id that the given child view corresponds to. @param child Child View to query @return Item id corresponding to the given view

@deprecated use {@link #getChildAdapterPosition(View)} or {@link #getChildLayoutPosition(View)}.

Returns whether this RecyclerView will clip its children to its padding, and resize (but not clip) any EdgeEffect to the padded region, if padding is

Check if the RecyclerView is configured to clip child views to its padding. @return true if this RecyclerView clips children to its padding, false ot

Returns the accessibility delegate compatibility implementation used by the RecyclerView. @return An instance of AccessibilityDelegateCompat used by R

Returns the bounds of the view including its decoration and margins. @param view The view element to check @param outBounds A rect that will receive

Gets the number of items to prefetch in {@link #collectInitialPrefetchPositions(int, LayoutPrefetchRegistry)}, which defines how many inner items shou

Gets the current ItemAnimator for this RecyclerView. A null return value indicates that there is no animator and that item changes will happen without

Returns the number of items in the adapter bound to the parent RecyclerView. <p> Note that this number is not necessarily equal to {@link State#getIte

Returns the View type defined by the adapter. @param view The view to query @return The type of the view assigned by the adapter.

Return the {@link LayoutManager} currently responsible for layout policy for this RecyclerView. @return The currently bound LayoutManager

@return The LayoutManager to which this SmoothScroller is attached. Will return <code>null</code> after the SmoothScroller is stopped.

Returns the maximum fling velocity used by this RecyclerView. @return The maximum fling velocity used by this RecyclerView.

Returns the minimum velocity to start a fling. @return The minimum velocity to start a fling

Returns the MeasureSpec mode for the perpendicular orientation from the LayoutManager. @return The current measure spec mode. @see View.MeasureSpec

Gets the current duration for which all move animations will run. @return The current move duration

Get the current {@link OnFlingListener} from this {@link RecyclerView}. @return The {@link OnFlingListener} instance currently set (can be null).

Returns the current orientation of the layout. @return Current orientation, either {@link #HORIZONTAL} or {@link #VERTICAL} @see #setOrientation(int

Return the end padding of the parent RecyclerView @return Padding in pixels

Return the start padding of the parent RecyclerView @return Padding in pixels

Returns true if the RecyclerView should attempt to preserve currently focused Adapter Item's focus even if the View representing the Item is replaced

Returns whether LayoutManager will recycle its children when it is detached from RecyclerView. @return true if LayoutManager will recycle its childre

Returns remaining horizontal scroll distance of an ongoing scroll animation(fling/ smoothScrollTo/SmoothScroller) in pixels. Returns zero if {@link #g

Returns remaining vertical scroll distance of an ongoing scroll animation(fling/ smoothScrollTo/SmoothScroller) in pixels. Returns zero if {@link #get

Gets the current duration for which all remove animations will run. @return The current remove duration

Returns if views are laid out from the opposite direction of the layout. @return If layout is reversed or not. @see #setReverseLayout(boolean)

If scroll is triggered to make a certain item visible, this value will return the adapter index of that item. @return Adapter index of the target item

Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to. @return the up-to-date adapter position this v

@deprecated use {@link #getViewLayoutPosition()} or {@link #getViewAdapterPosition()}

@return true if the app has specified that changes in adapter content cannot change the size of the RecyclerView itself.

Returns whether there are pending adapter updates which are not yet applied to the layout. <p> If this method returns <code>true</code>, it means that

Flags a view so that it will not be scrapped or recycled. <p> Scope of ignoring a child is strictly restricted to position tracking, scrapping and rec

@see RecyclerView#scrollToPosition(int) @deprecated Use {@link Action#jumpTo(int)}.

Invalidates all ItemDecorations. If RecyclerView has item decorations, calling this method will trigger a {@link #requestLayout()} call.

Returns true if RecyclerView is currently running some animations. <p> If you want to be notified when animations are finished, use {@link ItemAnimato

Returns true if RecyclerView is attached to window.

Returns whether LayoutManager is currently attached to a RecyclerView which is attached to a window. @return True if this LayoutManager is controllin

Returns whether the LayoutManager uses the automatic measurement API or not. @return <code>True</code> if the LayoutManager is measured by the Recycl

Sets whether the LayoutManager should be queried for views outside of its viewport while the UI thread is idle between frames. @see #setItemPrefetchE