ObservableDouble
public
class
ObservableDouble
extends BaseObservable
implements
Parcelable,
Serializable
java.lang.Object | ||
↳ | android.databinding.BaseObservable | |
↳ | android.databinding.ObservableDouble |
An observable class that holds a primitive double. It can also create a calculated field, depending on other fields:
Observable field classes may be used instead of creating an Observable object:
public class MyDataObject {
public final ObservableDouble temperatureC = new ObservableDouble();
public final ObservableDouble temperatureF = new ObservableDouble(temperatureC) {
@Override
public double 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 ObservableByte will lose its dependencies.
Summary
Inherited constants |
---|
From
interface
android.os.Parcelable
|
Fields | |
---|---|
public
static
final
Creator<ObservableDouble> |
CREATOR
|
Public constructors | |
---|---|
ObservableDouble(double value)
Creates an ObservableDouble with the given initial value. |
|
ObservableDouble()
Creates an ObservableDouble with the initial value of |
|
ObservableDouble(Observable... dependencies)
Creates an ObservableDouble that depends on |
Public methods | |
---|---|
int
|
describeContents()
|
double
|
get()
|
void
|
set(double 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
Public constructors
ObservableDouble
ObservableDouble (double value)
Creates an ObservableDouble with the given initial value.
Parameters | |
---|---|
value |
double : the initial value for the ObservableDouble
|
ObservableDouble
ObservableDouble ()
Creates an ObservableDouble with the initial value of 0
.
ObservableDouble
ObservableDouble (Observable... dependencies)
Creates an ObservableDouble that depends on dependencies
. Typically,
ObservableField
s are passed as dependencies. When any dependency
notifies changes, this ObservableDouble also notifies a change.
Parameters | |
---|---|
dependencies |
Observable : The Observables that this ObservableDouble depends on.
|
Public methods
describeContents
int describeContents ()
Returns | |
---|---|
int |
get
double get ()
Returns | |
---|---|
double |
the stored value. |
set
void set (double value)
Set the stored value.
Parameters | |
---|---|
value |
double : The new value
|
Annotations
Interfaces
Classes
- BaseObservable
- CallbackRegistry
- CallbackRegistry.NotifierCallback
- DataBindingUtil
- ListChangeRegistry
- MapChangeRegistry
- MergedDataBinderMapper
- Observable.OnPropertyChangedCallback
- ObservableArrayList
- ObservableArrayMap
- ObservableBoolean
- ObservableByte
- ObservableChar
- ObservableDouble
- ObservableField
- ObservableFloat
- ObservableInt
- ObservableList.OnListChangedCallback
- ObservableLong
- ObservableMap.OnMapChangedCallback
- ObservableParcelable
- ObservableShort
- OnRebindCallback
- PropertyChangeRegistry
- ViewDataBinding
- ViewStubProxy