TIF: Add explanation for TvView

import java.util.List;

/**

 * View playing TV

 * Displays TV contents. The TvView class provides a high level interface for applications to show

 * TV programs from various TV sources that implement {@link TvInputService}. (Note that the list of

 * TV inputs available on the system can be obtained by calling

 * {@link TvInputManager#getTvInputList() TvInputManager.getTvInputList()}.)

 * <p>

 * Once the application supplies the URI for a specific TV channel to {@link #tune(String, Uri)}

 * method, it takes care of underlying service binding (and unbinding if the current TvView is

 * already bound to a service) and automatically allocates/deallocates resources needed. In addition

 * to a few essential methods to control how the contents are presented, it also provides a way to

 * dispatch input events to the connected TvInputService in order to enable custom key actions for

 * the TV input.

 * </p>

 */

public class TvView extends ViewGroup {

    private static final String TAG = "TvView";