```
public class RecyclerView.LayoutParams
extends ViewGroup.MarginLayoutParams
                    
```
LayoutParams subclass for children of RecyclerView. Custom layout managers are encouragedto create their own subclass of this LayoutParams classto store any additional required per-child view metadata about the layout.

Constructor Summary

Constructors
Constructor	Description
`RecyclerView.LayoutParams(Context c, AttributeSet attrs)`
`RecyclerView.LayoutParams(int width, int height)`
`RecyclerView.LayoutParams(ViewGroup.MarginLayoutParams source)`
`RecyclerView.LayoutParams(ViewGroup.LayoutParams source)`
`RecyclerView.LayoutParams(RecyclerView.LayoutParams source)`

Method Summary

Modifier and Type	Method	Description
`boolean`	`viewNeedsUpdate()`	Returns true if the view this LayoutParams is attached to needs to have its contentupdated from the corresponding adapter.
`boolean`	`isViewInvalid()`	Returns true if the view this LayoutParams is attached to is now representingpotentially invalid data.
`boolean`	`isItemRemoved()`	Returns true if the adapter data item corresponding to the view this LayoutParamsis attached to has been removed from the data set.
`boolean`	`isItemChanged()`	Returns true if the adapter data item corresponding to the view this LayoutParamsis attached to has been changed in the data set.
`int`	`getViewPosition()`
`int`	`getViewLayoutPosition()`	Returns the adapter position that the view this LayoutParams is attached to correspondsto as of latest layout calculation.
`int`	`getViewAdapterPosition()`
`int`	`getAbsoluteAdapterPosition()`	Returns the up-to-date adapter position that the view this LayoutParams is attached tocorresponds to in the RecyclerView.
`int`	`getBindingAdapterPosition()`	Returns the up-to-date adapter position that the view this LayoutParams is attached tocorresponds to with respect to the Adapter that bound this View.

Methods inherited from class android.view.ViewGroup.MarginLayoutParams
getLayoutDirection, getMarginEnd, getMarginStart, isMarginRelative, resolveLayoutDirection, setLayoutDirection, setMarginEnd, setMarginStart, setMargins
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RecyclerView.LayoutParams
```
RecyclerView.LayoutParams(Context c, AttributeSet attrs)
```
  - RecyclerView.LayoutParams
```
RecyclerView.LayoutParams(int width, int height)
```
  - RecyclerView.LayoutParams
```
RecyclerView.LayoutParams(ViewGroup.MarginLayoutParams source)
```
  - RecyclerView.LayoutParams
```
RecyclerView.LayoutParams(ViewGroup.LayoutParams source)
```
  - RecyclerView.LayoutParams
```
RecyclerView.LayoutParams(RecyclerView.LayoutParams source)
```
- Method Detail
  - viewNeedsUpdate
```
 boolean viewNeedsUpdate()
```
    Returns true if the view this LayoutParams is attached to needs to have its contentupdated from the corresponding adapter.
  - isViewInvalid
```
 boolean isViewInvalid()
```
    Returns true if the view this LayoutParams is attached to is now representingpotentially invalid data. A LayoutManager should scrap/recycle it.
  - isItemRemoved
```
 boolean isItemRemoved()
```
    Returns true if the adapter data item corresponding to the view this LayoutParamsis attached to has been removed from the data set. A LayoutManager may choose totreat it differently in order to animate its outgoing or disappearing state.
  - isItemChanged
```
 boolean isItemChanged()
```
    Returns true if the adapter data item corresponding to the view this LayoutParamsis attached to has been changed in the data set. A LayoutManager may choose totreat it differently in order to animate its changing state.
  - getViewPosition
```
@Deprecated() int getViewPosition()
```
  - getViewLayoutPosition
```
 int getViewLayoutPosition()
```
    Returns the adapter position that the view this LayoutParams is attached to correspondsto as of latest layout calculation.
  - getViewAdapterPosition
```
@Deprecated() int getViewAdapterPosition()
```
  - getAbsoluteAdapterPosition
```
 int getAbsoluteAdapterPosition()
```
    Returns the up-to-date adapter position that the view this LayoutParams is attached tocorresponds to in the RecyclerView. If the RecyclerView has an Adapter that merges other adapters, this position will be with respect to theadapter that is assigned to the RecyclerView.
  - getBindingAdapterPosition
```
 int getBindingAdapterPosition()
```
    Returns the up-to-date adapter position that the view this LayoutParams is attached tocorresponds to with respect to the Adapter that bound this View.

Class RecyclerView.LayoutParams

Constructor Summary

Method Summary

Methods inherited from class android.view.ViewGroup.MarginLayoutParams

Methods inherited from class java.lang.Object

Constructor Detail

RecyclerView.LayoutParams

RecyclerView.LayoutParams

RecyclerView.LayoutParams

RecyclerView.LayoutParams

RecyclerView.LayoutParams

Method Detail

viewNeedsUpdate

isViewInvalid

isItemRemoved

isItemChanged

getViewPosition

getViewLayoutPosition

getViewAdapterPosition

getAbsoluteAdapterPosition

getBindingAdapterPosition