ItemKeyedDataSource.LoadCallback
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android
abstract class ItemKeyedDataSource.LoadCallback<Value : Any?>
ItemKeyedDataSource.LoadInitialCallback |
Callback for |
Callback for ItemKeyedDataSource loadBefore and loadAfter 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).
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<Value : Any?> |
Type of items being loaded. |
Summary
Public constructors |
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<Value : Any?> LoadCallback() |
android
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Public functions |
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abstract Unit |
Called to pass loaded data from a DataSource. |
android
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Public constructors
Public functions
onResult
abstract fun onResult(data: List<Value>): Unit
Called to pass loaded data from a DataSource.
Call this method from your ItemKeyedDataSource's loadBefore and loadAfter methods to return data.
Call this from loadInitial 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 | |
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data: List<Value> |
List of items loaded from the |