ObservableField

java.lang.Object

↳ android.databinding.ObservableField<T>

Known Direct Subclasses

ObservableParcelable<T extends Parcelable>

ObservableParcelable<T extends Parcelable> An observable class that holds a parcelable object.

An object wrapper to make it observable.

Observable field classes may be used instead of creating an Observable object. It can also create a calculated field, depending on other fields:

public class MyDataObject {
 private Context context;
 public final ObservableField<String> first = new ObservableField<String>();
 public final ObservableField<String> last = new ObservableField<String>();
 public final ObservableField<String> display =
 new ObservableField<String>(first, last) {
 @Override
 public String get() {
 return context.getResources().getString(R.string.name, first.get, last.get());
 }
 };
 public final ObservableInt age = new ObservableInt();
 }

Fields of this type should be declared final because bindings only detect changes in the field's value, not of the field itself.

See also:

ObservableParcelable

Summary

Public constructors
`ObservableField(T value)` Wraps the given object and creates an observable object
`ObservableField()` Creates an empty observable object
`ObservableField(Observable... dependencies)` Creates an ObservableField that depends on `dependencies`.

Public methods
`T`	`get()`
`void`	`set(T value)` Set the stored value.

Inherited methods
From class `android.databinding.BaseObservable` `void` `addOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)` Adds a callback to listen for changes to the Observable. `void` `notifyChange()` Notifies listeners that all properties of this instance have changed. `void` `notifyPropertyChanged(int fieldId)` Notifies listeners that a specific property has changed. `void` `removeOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)` Removes a callback from those listening for changes.
From class `java.lang.Object` `Object` `clone()` `boolean` `equals(Object arg0)` `void` `finalize()` `final Class<?>` `getClass()` `int` `hashCode()` `final void` `notify()` `final void` `notifyAll()` `String` `toString()` `final void` `wait(long arg0, int arg1)` `final void` `wait(long arg0)` `final void` `wait()`
From interface `android.databinding.Observable` `abstract void` `addOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)` Adds a callback to listen for changes to the Observable. `abstract void` `removeOnPropertyChangedCallback(Observable.OnPropertyChangedCallback callback)` Removes a callback from those listening for changes.

Public constructors

ObservableField (T value)

Wraps the given object and creates an observable object

Parameters
`value`	`T`: The value to be wrapped as an observable.