Package androidx.databinding

Interface ObservableMap<K,V>

All Superinterfaces:

java.util.Map<K,V>

public interface ObservableMap<K,V>
extends java.util.Map<K,V>

A Map that notifies when items change. This kind of Map may be data bound and have the UI update as the map changes.

Implementers must call ObservableMap.OnMapChangedCallback.onMapChanged(ObservableMap, Object) whenever an item is added, changed, or removed.

ObservableArrayMap is a convenient implementation of ObservableMap. MapChangeRegistry may help other implementations manage the callbacks.

See Also:

Observable, ObservableList

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ObservableMap.OnMapChangedCallback<T extends ObservableMap<K,V>,K,V>	A callback receiving notifications when an ObservableMap changes.

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Method Summary

Modifier and Type	Method	Description
void	addOnMapChangedCallback(ObservableMap.OnMapChangedCallback<? extends ObservableMap<K,V>,K,V> callback)	Adds a callback to listen for changes to the ObservableMap.
void	removeOnMapChangedCallback(ObservableMap.OnMapChangedCallback<? extends ObservableMap<K,V>,K,V> callback)	Removes a previously added callback.

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Method Detail

addOnMapChangedCallback

void addOnMapChangedCallback(ObservableMap.OnMapChangedCallback<? extends ObservableMap<K,V>,K,V> callback)

Adds a callback to listen for changes to the ObservableMap.

Parameters:

callback - The callback to start listening for events.

removeOnMapChangedCallback

void removeOnMapChangedCallback(ObservableMap.OnMapChangedCallback<? extends ObservableMap<K,V>,K,V> callback)

Removes a previously added callback.

Parameters:

callback - The callback that no longer needs to be notified of map changes.