# RecyclerView.LayoutParams added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) belongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1 Summary:[Inherited Constants](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#inhconstants)\|[Inherited Fields](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#inhfields)\|[Ctors](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#pubctors)\|[Methods](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#) # RecyclerView.LayoutParams | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ` public static class RecyclerView.LayoutParams ` ` `` `` extends `[ViewGroup.MarginLayoutParams](https://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html)` `` ` |---|---|---|-----------------------------------------------------| | java.lang.Object |||| | ↳ | [android.view.ViewGroup.LayoutParams](https://developer.android.com/reference/android/view/ViewGroup.LayoutParams.html) ||| | | ↳ | [android.view.ViewGroup.MarginLayoutParams](https://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html) || | | | ↳ | android.support.v7.widget.RecyclerView.LayoutParams | |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)Known Direct Subclasses [GridLayoutManager.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager.LayoutParams),[StaggeredGridLayoutManager.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/StaggeredGridLayoutManager.LayoutParams) |------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------| | [GridLayoutManager.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager.LayoutParams) | LayoutParams used by GridLayoutManager. | | [StaggeredGridLayoutManager.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/StaggeredGridLayoutManager.LayoutParams) | LayoutParams used by StaggeredGridLayoutManager. | |
*** ** * ** *** [LayoutParams](https://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html)subclass for children of[RecyclerView](https://developer.android.com/reference/android/support/v7/widget/RecyclerView). Custom[layout managers](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutManager)are encouraged to create their own subclass of this`LayoutParams`class to store any additional required per-child view metadata about the layout. ## Summary | ### Inherited constants | |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)From class` android.view.ViewGroup.LayoutParams ` |-------|-----------------------| | `int` | `FILL_PARENT`
| | `int` | `MATCH_PARENT`
| | `int` | `WRAP_CONTENT`
| | | ### Inherited fields | |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)From class` android.view.ViewGroup.MarginLayoutParams ` |---------------|-----------------------| | ` public int` | `bottomMargin`
| | ` public int` | `leftMargin`
| | ` public int` | `rightMargin`
| | ` public int` | `topMargin`
| | | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)From class` android.view.ViewGroup.LayoutParams ` |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------| | ` public int` | `height`
| | ` public `[LayoutAnimationController.AnimationParameters](https://developer.android.com/reference/android/view/animation/LayoutAnimationController.AnimationParameters.html) | `layoutAnimationParameters`
| | ` public int` | `width`
| | | ### Public constructors || |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | ` `[RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#RecyclerView.LayoutParams(android.content.Context, android.util.AttributeSet))`(`[Context](https://developer.android.com/reference/android/content/Context.html)` c, `[AttributeSet](https://developer.android.com/reference/android/util/AttributeSet.html)` attrs) ` | | ` `[RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#RecyclerView.LayoutParams(int, int))`(int width, int height) ` | | ` `[RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#RecyclerView.LayoutParams(android.view.ViewGroup.MarginLayoutParams))`(`[ViewGroup.MarginLayoutParams](https://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html)` source) ` | | ` `[RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#RecyclerView.LayoutParams(android.view.ViewGroup.LayoutParams))`(`[ViewGroup.LayoutParams](https://developer.android.com/reference/android/view/ViewGroup.LayoutParams.html)` source) ` | | ` `[RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#RecyclerView.LayoutParams(android.support.v7.widget.RecyclerView.LayoutParams))`(`[RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams)` source) ` | | ### Public methods || |------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` int` | ` `[getViewAdapterPosition](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewAdapterPosition())`() ` Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to. | | ` int` | ` `[getViewLayoutPosition](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewLayoutPosition())`() ` Returns the adapter position that the view this LayoutParams is attached to corresponds to as of latest layout calculation. | | ` int` | ` `[getViewPosition](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewPosition())`() ` *This method was deprecated in API level 22.1.0. use[getViewLayoutPosition()](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewLayoutPosition())or[getViewAdapterPosition()](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewAdapterPosition())* | | ` boolean` | ` `[isItemChanged](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#isItemChanged())`() ` Returns true if the adapter data item corresponding to the view this LayoutParams is attached to has been changed in the data set. | | ` boolean` | ` `[isItemRemoved](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#isItemRemoved())`() ` Returns true if the adapter data item corresponding to the view this LayoutParams is attached to has been removed from the data set. | | ` boolean` | ` `[isViewInvalid](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#isViewInvalid())`() ` Returns true if the view this LayoutParams is attached to is now representing potentially invalid data. | | ` boolean` | ` `[viewNeedsUpdate](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#viewNeedsUpdate())`() ` Returns true if the view this LayoutParams is attached to needs to have its content updated from the corresponding adapter. | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)From class` `[android.view.ViewGroup.MarginLayoutParams](https://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html)` ` |------------|--------------------------------------------------------| | ` int` | ` getLayoutDirection() ` | | ` int` | ` getMarginEnd() ` | | ` int` | ` getMarginStart() ` | | ` boolean` | ` isMarginRelative() ` | | ` void` | ` resolveLayoutDirection(int arg0) ` | | ` void` | ` setLayoutDirection(int arg0) ` | | ` void` | ` setMarginEnd(int arg0) ` | | ` void` | ` setMarginStart(int arg0) ` | | ` void` | ` setMargins(int arg0, int arg1, int arg2, int arg3) ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)From class` `[android.view.ViewGroup.LayoutParams](https://developer.android.com/reference/android/view/ViewGroup.LayoutParams.html)` ` |---------|---------------------------------------------------------------------------------------------------------------------------------------------| | ` void` | ` resolveLayoutDirection(int arg0) ` | | ` void` | ` setBaseAttributes(`[TypedArray](https://developer.android.com/reference/android/content/res/TypedArray.html)` arg0, int arg1, int arg2) ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#)From class` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` String` | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || ## Public constructors ### RecyclerView.LayoutParams added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` RecyclerView.LayoutParams (Context c, AttributeSet attrs) ```

| Parameters || |---------|-----------------------| | `c` | `Context`
| | `attrs` | `AttributeSet`
| ### RecyclerView.LayoutParams added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` RecyclerView.LayoutParams (int width, int height) ```

| Parameters || |----------|--------------| | `width` | `int`
| | `height` | `int`
| ### RecyclerView.LayoutParams added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` RecyclerView.LayoutParams (ViewGroup.MarginLayoutParams source) ```

| Parameters || |----------|---------------------------------------| | `source` | `ViewGroup.MarginLayoutParams`
| ### RecyclerView.LayoutParams added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` RecyclerView.LayoutParams (ViewGroup.LayoutParams source) ```

| Parameters || |----------|---------------------------------| | `source` | `ViewGroup.LayoutParams`
| ### RecyclerView.LayoutParams added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` RecyclerView.LayoutParams (RecyclerView.LayoutParams source) ```

| Parameters || |----------|------------------------------------| | `source` | `RecyclerView.LayoutParams`
| ## Public methods ### getViewAdapterPosition added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` int getViewAdapterPosition () ``` Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to.
| Returns || |-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `int` | the up-to-date adapter position this view. It may return[NO_POSITION](https://developer.android.com/reference/android/support/v7/widget/RecyclerView#NO_POSITION)if item represented by this View has been removed or its up-to-date position cannot be calculated.
| ### getViewLayoutPosition added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` int getViewLayoutPosition () ``` Returns the adapter position that the view this LayoutParams is attached to corresponds to as of latest layout calculation.
| Returns || |-------|----------------------------------------------------------------| | `int` | the adapter position this view as of latest layout pass
| ### getViewPosition added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` int getViewPosition () ```
**This method was deprecated in API level 22.1.0.** use[getViewLayoutPosition()](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewLayoutPosition())or[getViewAdapterPosition()](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams#getViewAdapterPosition())

| Returns || |-------|--------| | `int` |
| ### isItemChanged added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` boolean isItemChanged () ``` Returns true if the adapter data item corresponding to the view this LayoutParams is attached to has been changed in the data set. A LayoutManager may choose to treat it differently in order to animate its changing state.
| Returns || |-----------|-----------------------------------------------------------------------------| | `boolean` | true if the item the view corresponds to was changed in the data set
| ### isItemRemoved added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` boolean isItemRemoved () ``` Returns true if the adapter data item corresponding to the view this LayoutParams is attached to has been removed from the data set. A LayoutManager may choose to treat it differently in order to animate its outgoing or disappearing state.
| Returns || |-----------|-------------------------------------------------------------------------------| | `boolean` | true if the item the view corresponds to was removed from the data set
| ### isViewInvalid added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` boolean isViewInvalid () ``` Returns true if the view this LayoutParams is attached to is now representing potentially invalid data. A LayoutManager should scrap/recycle it.
| Returns || |-----------|------------------------------------| | `boolean` | true if the view is invalid
| ### viewNeedsUpdate added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` boolean viewNeedsUpdate () ``` Returns true if the view this LayoutParams is attached to needs to have its content updated from the corresponding adapter.
| Returns || |-----------|---------------------------------------------------------| | `boolean` | true if the view should have its content updated
| - ## Annotations - [RecyclerView.EdgeEffectFactory.EdgeDirection](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.EdgeEffectFactory.EdgeDirection) - [RecyclerView.ItemAnimator.AdapterChanges](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemAnimator.AdapterChanges) - ## Interfaces - [ActionMenuView.OnMenuItemClickListener](https://developer.android.com/reference/android/support/v7/widget/ActionMenuView.OnMenuItemClickListener) - [PopupMenu.OnDismissListener](https://developer.android.com/reference/android/support/v7/widget/PopupMenu.OnDismissListener) - [PopupMenu.OnMenuItemClickListener](https://developer.android.com/reference/android/support/v7/widget/PopupMenu.OnMenuItemClickListener) - [RecyclerView.ChildDrawingOrderCallback](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ChildDrawingOrderCallback) - [RecyclerView.ItemAnimator.ItemAnimatorFinishedListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemAnimator.ItemAnimatorFinishedListener) - [RecyclerView.LayoutManager.LayoutPrefetchRegistry](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutManager.LayoutPrefetchRegistry) - [RecyclerView.OnChildAttachStateChangeListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.OnChildAttachStateChangeListener) - [RecyclerView.OnItemTouchListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.OnItemTouchListener) - [RecyclerView.RecyclerListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.RecyclerListener) - [RecyclerView.SmoothScroller.ScrollVectorProvider](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.SmoothScroller.ScrollVectorProvider) - [SearchView.OnCloseListener](https://developer.android.com/reference/android/support/v7/widget/SearchView.OnCloseListener) - [SearchView.OnQueryTextListener](https://developer.android.com/reference/android/support/v7/widget/SearchView.OnQueryTextListener) - [SearchView.OnSuggestionListener](https://developer.android.com/reference/android/support/v7/widget/SearchView.OnSuggestionListener) - [ShareActionProvider.OnShareTargetSelectedListener](https://developer.android.com/reference/android/support/v7/widget/ShareActionProvider.OnShareTargetSelectedListener) - [ThemedSpinnerAdapter](https://developer.android.com/reference/android/support/v7/widget/ThemedSpinnerAdapter) - [Toolbar.OnMenuItemClickListener](https://developer.android.com/reference/android/support/v7/widget/Toolbar.OnMenuItemClickListener) - ## Classes - [ActionMenuView](https://developer.android.com/reference/android/support/v7/widget/ActionMenuView) - [ActionMenuView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/ActionMenuView.LayoutParams) - [AppCompatAutoCompleteTextView](https://developer.android.com/reference/android/support/v7/widget/AppCompatAutoCompleteTextView) - [AppCompatButton](https://developer.android.com/reference/android/support/v7/widget/AppCompatButton) - [AppCompatCheckBox](https://developer.android.com/reference/android/support/v7/widget/AppCompatCheckBox) - [AppCompatCheckedTextView](https://developer.android.com/reference/android/support/v7/widget/AppCompatCheckedTextView) - [AppCompatEditText](https://developer.android.com/reference/android/support/v7/widget/AppCompatEditText) - [AppCompatImageButton](https://developer.android.com/reference/android/support/v7/widget/AppCompatImageButton) - [AppCompatImageView](https://developer.android.com/reference/android/support/v7/widget/AppCompatImageView) - [AppCompatMultiAutoCompleteTextView](https://developer.android.com/reference/android/support/v7/widget/AppCompatMultiAutoCompleteTextView) - [AppCompatRadioButton](https://developer.android.com/reference/android/support/v7/widget/AppCompatRadioButton) - [AppCompatRatingBar](https://developer.android.com/reference/android/support/v7/widget/AppCompatRatingBar) - [AppCompatSeekBar](https://developer.android.com/reference/android/support/v7/widget/AppCompatSeekBar) - [AppCompatSpinner](https://developer.android.com/reference/android/support/v7/widget/AppCompatSpinner) - [AppCompatTextView](https://developer.android.com/reference/android/support/v7/widget/AppCompatTextView) - [CardView](https://developer.android.com/reference/android/support/v7/widget/CardView) - [DefaultItemAnimator](https://developer.android.com/reference/android/support/v7/widget/DefaultItemAnimator) - [DividerItemDecoration](https://developer.android.com/reference/android/support/v7/widget/DividerItemDecoration) - [GridLayout](https://developer.android.com/reference/android/support/v7/widget/GridLayout) - [GridLayout.Alignment](https://developer.android.com/reference/android/support/v7/widget/GridLayout.Alignment) - [GridLayout.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/GridLayout.LayoutParams) - [GridLayout.Spec](https://developer.android.com/reference/android/support/v7/widget/GridLayout.Spec) - [GridLayoutManager](https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager) - [GridLayoutManager.DefaultSpanSizeLookup](https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager.DefaultSpanSizeLookup) - [GridLayoutManager.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager.LayoutParams) - [GridLayoutManager.SpanSizeLookup](https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager.SpanSizeLookup) - [LinearLayoutCompat](https://developer.android.com/reference/android/support/v7/widget/LinearLayoutCompat) - [LinearLayoutCompat.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/LinearLayoutCompat.LayoutParams) - [LinearLayoutManager](https://developer.android.com/reference/android/support/v7/widget/LinearLayoutManager) - [LinearLayoutManager.LayoutChunkResult](https://developer.android.com/reference/android/support/v7/widget/LinearLayoutManager.LayoutChunkResult) - [LinearSmoothScroller](https://developer.android.com/reference/android/support/v7/widget/LinearSmoothScroller) - [LinearSnapHelper](https://developer.android.com/reference/android/support/v7/widget/LinearSnapHelper) - [ListPopupWindow](https://developer.android.com/reference/android/support/v7/widget/ListPopupWindow) - [OrientationHelper](https://developer.android.com/reference/android/support/v7/widget/OrientationHelper) - [PagerSnapHelper](https://developer.android.com/reference/android/support/v7/widget/PagerSnapHelper) - [PopupMenu](https://developer.android.com/reference/android/support/v7/widget/PopupMenu) - [RecyclerView](https://developer.android.com/reference/android/support/v7/widget/RecyclerView) - [RecyclerView.Adapter](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.Adapter) - [RecyclerView.AdapterDataObserver](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.AdapterDataObserver) - [RecyclerView.EdgeEffectFactory](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.EdgeEffectFactory) - [RecyclerView.ItemAnimator](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemAnimator) - [RecyclerView.ItemAnimator.ItemHolderInfo](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemAnimator.ItemHolderInfo) - [RecyclerView.ItemDecoration](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemDecoration) - [RecyclerView.LayoutManager](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutManager) - [RecyclerView.LayoutManager.Properties](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutManager.Properties) - [RecyclerView.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutParams) - [RecyclerView.OnFlingListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.OnFlingListener) - [RecyclerView.OnScrollListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.OnScrollListener) - [RecyclerView.RecycledViewPool](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.RecycledViewPool) - [RecyclerView.Recycler](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.Recycler) - [RecyclerView.SimpleOnItemTouchListener](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.SimpleOnItemTouchListener) - [RecyclerView.SmoothScroller](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.SmoothScroller) - [RecyclerView.SmoothScroller.Action](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.SmoothScroller.Action) - [RecyclerView.State](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.State) - [RecyclerView.ViewCacheExtension](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ViewCacheExtension) - [RecyclerView.ViewHolder](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ViewHolder) - [RecyclerViewAccessibilityDelegate](https://developer.android.com/reference/android/support/v7/widget/RecyclerViewAccessibilityDelegate) - [RecyclerViewAccessibilityDelegate.ItemDelegate](https://developer.android.com/reference/android/support/v7/widget/RecyclerViewAccessibilityDelegate.ItemDelegate) - [SearchView](https://developer.android.com/reference/android/support/v7/widget/SearchView) - [ShareActionProvider](https://developer.android.com/reference/android/support/v7/widget/ShareActionProvider) - [SimpleItemAnimator](https://developer.android.com/reference/android/support/v7/widget/SimpleItemAnimator) - [SnapHelper](https://developer.android.com/reference/android/support/v7/widget/SnapHelper) - [StaggeredGridLayoutManager](https://developer.android.com/reference/android/support/v7/widget/StaggeredGridLayoutManager) - [StaggeredGridLayoutManager.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/StaggeredGridLayoutManager.LayoutParams) - [SwitchCompat](https://developer.android.com/reference/android/support/v7/widget/SwitchCompat) - [ThemedSpinnerAdapter.Helper](https://developer.android.com/reference/android/support/v7/widget/ThemedSpinnerAdapter.Helper) - [Toolbar](https://developer.android.com/reference/android/support/v7/widget/Toolbar) - [Toolbar.LayoutParams](https://developer.android.com/reference/android/support/v7/widget/Toolbar.LayoutParams) - [Toolbar.SavedState](https://developer.android.com/reference/android/support/v7/widget/Toolbar.SavedState) - [TooltipCompat](https://developer.android.com/reference/android/support/v7/widget/TooltipCompat)