How to use

matchesSelector

method

in

android.support.v7.media.MediaRouter$RouteInfo

@Override
public void onRouteAdded(MediaRouter router, MediaRouter.RouteInfo route) {
  if (route == null || !route.matchesSelector(mRouteSelector)) return;
  MediaSink sink = MediaSink.fromRoute(route);
  if (mSinks.contains(sink)) return;
  mSinks.add(sink);
  updateChromeMediaRouter();
}

@Override
public void startObservingMediaSinks(String sourceId) {
  if (mAndroidMediaRouter == null) return;
  MediaSource source = MediaSource.from(sourceId);
  if (source == null) return;
  MediaRouteSelector routeSelector = source.buildRouteSelector();
  if (routeSelector == null) {
    // If the application invalid, report no devices available.
    onSinksReceived(sourceId, new ArrayList<MediaSink>());
    return;
  }
  String applicationId = source.getApplicationId();
  DiscoveryCallback callback = mDiscoveryCallbacks.get(applicationId);
  if (callback != null) {
    callback.addSourceUrn(sourceId);
    return;
  }
  List<MediaSink> knownSinks = new ArrayList<MediaSink>();
  for (RouteInfo route : mAndroidMediaRouter.getRoutes()) {
    if (route.matchesSelector(routeSelector)) {
      knownSinks.add(MediaSink.fromRoute(route));
    }
  }
  callback = new DiscoveryCallback(sourceId, knownSinks, this, routeSelector);
  mAndroidMediaRouter.addCallback(
      routeSelector,
      callback,
      MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
  mDiscoveryCallbacks.put(applicationId, callback);
}

@Override
public void onRouteChanged(MediaRouter router, MediaRouter.RouteInfo route) {
  // Sometimes onRouteAdded is not called for the route as it doesn't yet match the selector.
  // onRouteChanged() will be called later when the matching category is added.
  if (route == null) return;
  if (route.matchesSelector(mRouteSelector)) {
    onRouteAdded(router, route);
  } else {
    onRouteRemoved(router, route);
  }
}