belongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1
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()
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Public methods | |
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abstract
void
|
fillData(T[] data, int startPosition, int itemCount)
Fill the given tile. |
int
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getMaxCachedTiles()
Returns tile cache size limit (in tiles). |
void
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recycleData(T[] data, int itemCount)
Recycle the objects created in |
abstract
int
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refreshData()
Refresh the data set and return the new data item count. |
Inherited methods | |
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From
class
java.lang.Object
| |
Public constructors
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. |