title: How to partially update views in an app widget without rebuilding all the RemoteViews
body: <p>I'm implementing an app widget and I'd like to be able to change the property of a single view in the widget layout, without rebuilding all the <code>RemoteViews</code> from scratch, which involves loading XML etc and which is not necessary in some circumstances.. Is there a way to say "update property X on view identified by a specific ID in the current widget layout"? I've seen that there is a <code>partiallyUpdateAppWidget</code> method in the <code>AppWidgetManager</code> class but I can't understand nor if it is meant for this purpose neither how it must be used.. Can you help me or point me to a useful link or example?</p>