title: Implementing both DataItem.DataListener interface and WearableListenerService
body: <p>In Android Wear application i've implemented  <em>DataItem.DataListener</em> interface for an Activity. Since i already created <em>WearableListenerService</em> for some other usages. Now the situation is when i want <em>onDatachanged()</em> in <strong>MyActivity</strong>  it will execute <em>onDatachanged()</em> of <strong>WearablelistenerService</strong>. Also viceversa</p>