Package icyllis.modernui.lifecycle

Class MutableLiveData<T>

java.lang.Object

icyllis.modernui.lifecycle.LiveData<T>

icyllis.modernui.lifecycle.MutableLiveData<T>

Type Parameters:

T - The type of data hold by this instance

Direct Known Subclasses:

MediatorLiveData

public class MutableLiveData<T>
extends LiveData<T>

LiveData which publicly exposes setValue(T) and postValue(T) method.

Constructor Summary

Constructors

Constructor	Description
MutableLiveData()	Creates a MutableLiveData with no value assigned to it.
MutableLiveData(T value)	Creates a MutableLiveData initialized with the given value.

Method Summary

Modifier and Type	Method	Description
void	postValue(T value)	Posts a task to a main thread to set the given value.
void	setValue(T value)	Sets the value.

Methods inherited from class icyllis.modernui.lifecycle.LiveData

getValue, hasActiveObservers, hasObservers, observe, observeForever, onActive, onInactive, removeObserver, removeObservers

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MutableLiveData

public MutableLiveData(T value)

Creates a MutableLiveData initialized with the given value.

Parameters:

value - initial value

MutableLiveData

public MutableLiveData()

Creates a MutableLiveData with no value assigned to it.

Method Details

postValue

public void postValue(T value)

Description copied from class: LiveData

Posts a task to a main thread to set the given value. So if you have a following code executed in the main thread:

 liveData.postValue("a");
 liveData.setValue("b");
 

The value "b" would be set at first and later the main thread would override it with the value "a".

If you called this method multiple times before a main thread executed a posted task, only the last value would be dispatched.

Overrides:

postValue in class LiveData<T>

Parameters:

value - The new value

setValue

public void setValue(T value)

Description copied from class: LiveData

Sets the value. If there are active observers, the value will be dispatched to them.

This method must be called from the main thread. If you need set a value from a background thread, you can use LiveData.postValue(Object)

Overrides:

setValue in class LiveData<T>

Parameters:

value - The new value