ObservableLong

public class ObservableLong
extends BaseObservable implements Parcelable, Serializable

java.lang.Object
   ↳ android.databinding.BaseObservable
     ↳ android.databinding.ObservableLong

An observable class that holds a primitive long.

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 {
     public final ObservableLong friendCount = new ObservableLong();
     public final ObservableLong familyCount = new ObservableLong();
     public final ObservableLong knownCount = new ObservableLong(friendCount, familyCount) {
         @Override
         public long get() { return friendCount.get() + familyCount.get(); }
     };
 }
Fields of this type should be declared final because bindings only detect changes in the field's value, not of the field itself.

This class is parcelable and serializable but callbacks are ignored when the object is parcelled / serialized. Unless you add custom callbacks, this will not be an issue because data binding framework always re-registers callbacks when the view is bound. A parceled ObservableLong will lose its dependencies.

Summary

Inherited constants

From interface android.os.Parcelable

Fields

public static final Creator<ObservableLong> CREATOR

Public constructors

ObservableLong(long value)

Creates an ObservableLong with the given initial value.

ObservableLong()

Creates an ObservableLong with the initial value of 0L.

ObservableLong(Observable... dependencies)

Creates an ObservableLong that depends on dependencies.

Public methods

int describeContents()
long get()
void set(long value)

Set the stored value.

void writeToParcel(Parcel dest, int flags)

Inherited methods

From class android.databinding.BaseObservable
From class java.lang.Object
From interface android.databinding.Observable
From interface android.os.Parcelable

Fields

CREATOR

Creator<ObservableLong> CREATOR

Public constructors

ObservableLong

ObservableLong (long value)

Creates an ObservableLong with the given initial value.

Parameters
value long: the initial value for the ObservableLong

ObservableLong

ObservableLong ()

Creates an ObservableLong with the initial value of 0L.

ObservableLong

ObservableLong (Observable... dependencies)

Creates an ObservableLong that depends on dependencies. Typically, ObservableFields are passed as dependencies. When any dependency notifies changes, this ObservableLong also notifies a change.

Parameters
dependencies Observable: The Observables that this ObservableLong depends on.

Public methods

describeContents

int describeContents ()

Returns
int

get

long get ()

Returns
long the stored value.

set

void set (long value)

Set the stored value.

Parameters
value long: The new value

writeToParcel

void writeToParcel (Parcel dest, 
                int flags)

Parameters
dest Parcel

flags int