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]

SortedList.Callback

public static abstract class SortedList.Callback
extends Object implements Comparator<T2>, ListUpdateCallback

java.lang.Object
↳	android.support.v7.util.SortedList.Callback<T2>

Known Direct Subclasses

The class that controls the behavior of the SortedList.

It defines how items should be sorted and how duplicates should be handled.

SortedList calls the callback methods on this class to notify changes about the underlying data.

Summary

Public constructors
`SortedList.Callback()`

Public methods
`abstract boolean`	`areContentsTheSame(T2 oldItem, T2 newItem)` Called by the SortedList when it wants to check whether two items have the same data or not.
`abstract boolean`	`areItemsTheSame(T2 item1, T2 item2)` Called by the SortedList to decide whether two objects represent the same Item or not.
`abstract int`	`compare(T2 o1, T2 o2)` Similar to `compare(Object, Object)`, should compare two and return how they should be ordered.
`Object`	`getChangePayload(T2 item1, T2 item2)` When `areItemsTheSame(T2, T2)` returns `true` for two items and `areContentsTheSame(T2, T2)` returns false for them, `SortedList.Callback` calls this method to get a payload about the change.
`void`	`onChanged(int position, int count, Object payload)` Called when `count` number of items are updated at the given position.
`abstract void`	`onChanged(int position, int count)` Called by the SortedList when the item at the given position is updated.

From class


  
    java.lang.Object

From interface


  
    java.util.Comparator