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AsyncListUtil.DataCallback

public static abstract class AsyncListUtil.DataCallback
extends Object

java.lang.Object
↳	android.support.v7.util.AsyncListUtil.DataCallback<T>

The callback that provides data access for AsyncListUtil.

All methods are called on the background thread.

Summary

Public constructors
`AsyncListUtil.DataCallback()`

Public methods
`abstract void`	`fillData(T[] data, int startPosition, int itemCount)` Fill the given tile.
`int`	`getMaxCachedTiles()` Returns tile cache size limit (in tiles).
`void`	`recycleData(T[] data, int itemCount)` Recycle the objects created in `fillData(T[], int, int)` if necessary.
`abstract int`	`refreshData()` Refresh the data set and return the new data item count.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

AsyncListUtil.DataCallback

AsyncListUtil.DataCallback ()

Public methods

fillData

void fillData (T[] data, 
                int startPosition, 
                int itemCount)

Fill the given tile.

The provided tile might be a recycled tile, in which case it will already have objects. It is suggested to re-use these objects if possible in your use case.

Parameters
`data`	`T`: The data item array to fill into. Should not be accessed beyond `itemCount`.
`startPosition`	`int`: The start position in the list.
`itemCount`	`int`: The data item count.

getMaxCachedTiles

int getMaxCachedTiles ()

Returns tile cache size limit (in tiles).

The actual number of cached tiles will be the maximum of this value and the number of tiles that is required to cover the range returned by extendRangeInto(int[], int[], int).

For example, if this method returns 10, and the most recent call to extendRangeInto(int[], int[], int) returned {100, 179}, and the tile size is 5, then the maximum number of cached tiles will be 16.

However, if the tile size is 20, then the maximum number of cached tiles will be 10.

The default implementation returns 10.

Returns
`int`	Maximum cache size.

recycleData

void recycleData (T[] data, 
                int itemCount)

Recycle the objects created in fillData(T[], int, int) if necessary.

Parameters
`data`	`T`: Array of data items. Should not be accessed beyond `itemCount`.
`itemCount`	`int`: The data item count.

refreshData

int refreshData ()

Refresh the data set and return the new data item count.

If the data is being accessed through Cursor this is where the new cursor should be created.

Returns
`int`	Data item count.