Summary: Inherited Constants | Inherited Fields | Ctors | Methods | Inherited Methods

RecyclerView.LayoutParams

Kotlin |Java

public static class RecyclerView.LayoutParams
extends ViewGroup.MarginLayoutParams

java.lang.Object
↳	android.view.ViewGroup.LayoutParams
	↳	android.view.ViewGroup.MarginLayoutParams
		↳	androidx.recyclerview.widget.RecyclerView.LayoutParams

Known direct subclasses

GridLayoutManager.LayoutParams, StaggeredGridLayoutManager.LayoutParams

GridLayoutManager.LayoutParams	LayoutParams used by GridLayoutManager.
StaggeredGridLayoutManager.LayoutParams	LayoutParams used by StaggeredGridLayoutManager.

LayoutParams subclass for children of RecyclerView. Custom layout managers 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

From class android.view.ViewGroup.LayoutParams

`int`	`FILL_PARENT`
`int`	`MATCH_PARENT`
`int`	`WRAP_CONTENT`

Inherited fields

From class android.view.ViewGroup.MarginLayoutParams

`public int`	`bottomMargin`
`public int`	`leftMargin`
`public int`	`rightMargin`
`public int`	`topMargin`

From class android.view.ViewGroup.LayoutParams

`public int`	`height`
`public LayoutAnimationController.AnimationParameters`	`layoutAnimationParameters`
`public int`	`width`

Public constructors
`LayoutParams(Context c, AttributeSet attrs)`
`LayoutParams(int width, int height)`
`LayoutParams(ViewGroup.MarginLayoutParams source)`
`LayoutParams(ViewGroup.LayoutParams source)`
`LayoutParams(RecyclerView.LayoutParams source)`

Public methods
`int`	`getAbsoluteAdapterPosition()` Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to in the `RecyclerView`.
`int`	`getBindingAdapterPosition()` Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to with respect to the `RecyclerView.Adapter` that bound this View.
`int`	`getViewAdapterPosition()` This method is deprecated. This method is confusing when nested adapters are used. If you are calling from the context of an `RecyclerView.Adapter`, use `getBindingAdapterPosition()`. If you need the position that `RecyclerView` sees, use `getAbsoluteAdapterPosition()`.
`int`	`getViewLayoutPosition()` Returns the adapter position that the view this LayoutParams is attached to corresponds to as of latest layout calculation.
`int`	`getViewPosition()` This method is deprecated. use `getViewLayoutPosition()` or `getViewAdapterPosition()`
`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.
`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.
`boolean`	`isViewInvalid()` Returns true if the view this LayoutParams is attached to is now representing potentially invalid data.
`boolean`	`viewNeedsUpdate()` Returns true if the view this LayoutParams is attached to needs to have its content updated from the corresponding adapter.

Inherited methods

From class


        
          android.view.ViewGroup.MarginLayoutParams

`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)`

From class


        
          android.view.ViewGroup.LayoutParams

`void`	`resolveLayoutDirection(int arg0)`
`void`	`setBaseAttributes(TypedArray arg0, int arg1, int arg2)`

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

LayoutParams

public LayoutParams (Context c, 
                AttributeSet attrs)

Parameters
`c`	`Context`
`attrs`	`AttributeSet`

LayoutParams

public LayoutParams (int width, 
                int height)

Parameters
`width`	`int`
`height`	`int`

LayoutParams

public LayoutParams (ViewGroup.MarginLayoutParams source)

Parameters
`source`	`ViewGroup.MarginLayoutParams`

LayoutParams

public LayoutParams (ViewGroup.LayoutParams source)

Parameters
`source`	`ViewGroup.LayoutParams`

public LayoutParams (RecyclerView.LayoutParams source)

Parameters
`source`	`RecyclerView.LayoutParams`

Public methods

getAbsoluteAdapterPosition

public int getAbsoluteAdapterPosition ()

Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to in the RecyclerView. If the RecyclerView has an RecyclerView.Adapter that merges other adapters, this position will be with respect to the adapter that is assigned to the RecyclerView.

Returns
`int`	the up-to-date adapter position this view with respect to the RecyclerView. It may return `RecyclerView.NO_POSITION` if item represented by this View has been removed or its up-to-date position cannot be calculated.

getBindingAdapterPosition

public int getBindingAdapterPosition ()

Returns the up-to-date adapter position that the view this LayoutParams is attached to corresponds to with respect to the RecyclerView.Adapter that bound this View.

Returns
`int`	the up-to-date adapter position this view relative to the `RecyclerView.Adapter` that bound this View. It may return `RecyclerView.NO_POSITION` if item represented by this View has been removed or its up-to-date position cannot be calculated.

getViewAdapterPosition

public int getViewAdapterPosition ()

This method is deprecated.
This method is confusing when nested adapters are used. If you are calling from the context of an RecyclerView.Adapter, use getBindingAdapterPosition(). If you need the position that RecyclerView sees, use getAbsoluteAdapterPosition().

Returns
`int`

getViewLayoutPosition

public 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

public int getViewPosition ()

This method is deprecated.
use getViewLayoutPosition() or getViewAdapterPosition()

Returns
`int`

isItemChanged

public 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

public 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

public 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

public 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