android.databinding
Interface Observable


public interface Observable

Observable classes provide a way in which data bound UI can be notified of changes. ObservableList and ObservableMap also provide the ability to notify when changes occur. ObservableField, ObservableParcelable, ObservableBoolean, ObservableByte, ObservableShort, ObservableInt, ObservableLong, ObservableFloat, and ObservableDouble provide a means by which properties may be notified without implementing Observable.

An Observable object should notify the Observable.OnPropertyChangedCallback whenever an observed property of the class changes.

The getter for an observable property should be annotated with Bindable.

Convenience class BaseObservable implements this interface and PropertyChangeRegistry can help classes that don't extend BaseObservable to implement the listener registry.


Nested Class Summary
static class Observable.OnPropertyChangedCallback
          The callback that is called by Observable when an observable property has changed.
 
Method Summary
 void addOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)
          Adds a callback to listen for changes to the Observable.
 void removeOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)
          Removes a callback from those listening for changes.
 

Method Detail

addOnPropertyChangedCallback

void addOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)
Adds a callback to listen for changes to the Observable.

Parameters:
callback - The callback to start listening.

removeOnPropertyChangedCallback

void removeOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)
Removes a callback from those listening for changes.

Parameters:
callback - The callback that should stop listening.