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ItemKeyedDataSource.LoadCallback

public static abstract class ItemKeyedDataSource.LoadCallback
extends Object

java.lang.Object
   ↳ android.arch.paging.ItemKeyedDataSource.LoadCallback<Value>


Callback for ItemKeyedDataSource loadBefore(LoadParams, LoadCallback) and loadAfter(LoadParams, LoadCallback) to return data.

A callback can be called only once, and will throw if called again.

It is always valid for a DataSource loading method that takes a callback to stash the callback and call it later. This enables DataSources to be fully asynchronous, and to handle temporary, recoverable error states (such as a network error that can be retried).

Summary

Public constructors

ItemKeyedDataSource.LoadCallback()

Public methods

abstract void onResult(List<Value> data)

Called to pass loaded data from a DataSource.

Inherited methods

Public constructors

ItemKeyedDataSource.LoadCallback

ItemKeyedDataSource.LoadCallback ()

Public methods

onResult

void onResult (List<Value> data)

Called to pass loaded data from a DataSource.

Call this method from your ItemKeyedDataSource's loadBefore(LoadParams, LoadCallback) and loadAfter(LoadParams, LoadCallback) methods to return data.

Call this from loadInitial(LoadInitialParams, LoadInitialCallback) to initialize without counting available data, or supporting placeholders.

It is always valid to pass a different amount of data than what is requested. Pass an empty list if there is no more data to load.

Parameters
data List: List of items loaded from the ItemKeyedDataSource.