added in version 22.1.0
belongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1

Summary: Ctors | Methods | Inherited Methods | [Expand All]

RecyclerView.State

public static class RecyclerView.State
extends Object

java.lang.Object
↳	android.support.v7.widget.RecyclerView.State

Contains useful information about the current RecyclerView state like target scroll position or view focus. State object can also keep arbitrary data, identified by resource ids.

Often times, RecyclerView components will need to pass information between each other. To provide a well defined data bus between components, RecyclerView passes the same State object to component callbacks and these components can use it to exchange data.

If you implement custom components, you can use State's put/get/remove methods to pass data between your components without needing to manage their lifecycles.

Summary

Public constructors
`RecyclerView.State()`

Public methods
`boolean`	`didStructureChange()`
`<T> T`	`get(int resourceId)` Gets the Object mapped from the specified id, or `null` if no such data exists.
`int`	`getItemCount()` Returns the total number of items that can be laid out.
`int`	`getRemainingScrollHorizontal()` Returns remaining horizontal scroll distance of an ongoing scroll animation(fling/ smoothScrollTo/SmoothScroller) in pixels.
`int`	`getRemainingScrollVertical()` Returns remaining vertical scroll distance of an ongoing scroll animation(fling/ smoothScrollTo/SmoothScroller) in pixels.
`int`	`getTargetScrollPosition()` If scroll is triggered to make a certain item visible, this value will return the adapter index of that item.
`boolean`	`hasTargetScrollPosition()` Returns if current scroll has a target position.
`boolean`	`isMeasuring()` Returns true if the RecyclerView is currently measuring the layout.
`boolean`	`isPreLayout()` Returns true if the `RecyclerView` is in the pre-layout step where it is having its `RecyclerView.LayoutManager` layout items where they will be at the beginning of a set of predictive item animations.
`void`	`put(int resourceId, Object data)` Adds a mapping from the specified id to the specified value, replacing the previous mapping from the specified key if there was one.
`void`	`remove(int resourceId)` Removes the mapping from the specified id, if there was any.
`String`	`toString()`
`boolean`	`willRunPredictiveAnimations()` Returns whether RecyclerView will run predictive animations in this layout pass or not.
`boolean`	`willRunSimpleAnimations()` Returns whether RecyclerView will run simple animations in this layout pass or not.

Inherited methods

From class


  
    java.lang.Object

Public constructors