lass="block">Posts a task to a main thread to set the given value. So if you have a following code
 executed in the main thread:
 <pre>
 liveData.postValue("a");
 liveData.setValue("b");
 </pre>
 The value "b" would be set at first and later the main thread would override it with
 the value "a".
 <p>
 If you called this method multiple times before a main thread executed a posted task, only
 the last value would be dispatched.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="LiveData.html#pos