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ObservableFloat

public class ObservableFloat
extends BaseObservable implements Parcelable, Serializable

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


An observable class that holds a primitive float.

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 ObservableFloat temperatureC = new ObservableFloat();
     public final ObservableFloat temperatureF = new ObservableFloat(temperatureC) {
         @Override
         public float get() { return (temperatureC.get() * 9 / 5) + 32; }
     };
 }
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 ObservableField will lose its dependencies.

Summary

Inherited constants

From interface android.os.Parcelable

Fields

public static final Creator<ObservableFloat> CREATOR

Public constructors

ObservableFloat(float value)

Creates an ObservableFloat with the given initial value.

ObservableFloat()

Creates an ObservableFloat with the initial value of 0f.

ObservableFloat(Observable... dependencies)

Creates an ObservableFloat that depends on dependencies.

Public methods

int describeContents()
float get()
void set(float 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<ObservableFloat> CREATOR

Public constructors

ObservableFloat

ObservableFloat (float value)

Creates an ObservableFloat with the given initial value.

Parameters
value float: the initial value for the ObservableFloat

ObservableFloat

ObservableFloat ()

Creates an ObservableFloat with the initial value of 0f.

ObservableFloat

ObservableFloat (Observable... dependencies)

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

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

Public methods

describeContents

int describeContents ()

Returns
int

get

float get ()

Returns
float the stored value.

set

void set (float value)

Set the stored value.

Parameters
value float: The new value

writeToParcel

void writeToParcel (Parcel dest, 
                int flags)

Parameters
dest Parcel

flags int