title: How to align center the title or label in activity?
body: <p>I know there are two ways of setting the title of activity. One way is the setting it in the android manifest like this <strong>android:label="@string/app_name"</strong>. Second is programmatically setting in activity class like <strong>setTitle("Hello World!")</strong>. Both ways are positioned in the left side but how can I put it in the center?</p>