Android Open Source - MediaRouter-Cast-Button-android Media Router Discovery Activity

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Back to project page MediaRouter-Cast-Button-android.

License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (C) 2014 Google Inc. All Rights Reserved. 
 *//from  w  w w  . j  a  va  2 s.c o m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at 
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */

package com.example.mediarouter;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.media.MediaRouteSelector;
import android.support.v7.media.MediaRouter;
import android.support.v7.media.MediaRouter.RouteInfo;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.google.android.gms.cast.CastDevice;
import com.google.android.gms.cast.CastMediaControlIntent;

/**
 * Sample activity to demonstrate discovering Cast devices using the Media
 * Router. The discovered devices are displayed as a list.
 * 
 * @see http://developer.android.com/guide/topics/media/mediarouter.html
 */
public class MediaRouterDiscoveryActivity extends Activity {

  private static final String TAG = MediaRouterDiscoveryActivity.class
      .getSimpleName();

  private MediaRouter mMediaRouter;
  private MediaRouteSelector mMediaRouteSelector;
  private MediaRouter.Callback mMediaRouterCallback;
  private CastDevice mSelectedDevice;

  private ArrayList<String> mRouteNames = new ArrayList<String>();
  private ArrayAdapter<String> mAdapter;
  private final ArrayList<MediaRouter.RouteInfo> mRouteInfos = new ArrayList<MediaRouter.RouteInfo>();

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.media_router_discovery);

    // Create a list control for displaying the names of the
    // devices discovered by the MediaRouter
    final ListView listview = (ListView) findViewById(R.id.listview);
    mRouteNames = new ArrayList<String>();
    mAdapter = new ArrayAdapter<String>(this,
        android.R.layout.simple_list_item_1, mRouteNames);
    listview.setAdapter(mAdapter);
    listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> parent, final View view,
          int position, long id) {
        Log.d(TAG, "onItemClick: position=" + position);

        MediaRouter.RouteInfo info = mRouteInfos.get(position);
        mMediaRouter.selectRoute(info);
      }

    });

    mMediaRouter = MediaRouter.getInstance(getApplicationContext());
    // Create a MediaRouteSelector for the type of routes your app supports
    mMediaRouteSelector = new MediaRouteSelector.Builder()
        .addControlCategory(
            CastMediaControlIntent.categoryForCast(getResources()
                .getString(R.string.app_id))).build();
    // Create a MediaRouter callback for discovery events
    mMediaRouterCallback = new MyMediaRouterCallback();
  }

  @Override
  protected void onResume() {
    super.onResume();

    // Add the callback to start device discovery
    mMediaRouter.addCallback(mMediaRouteSelector, mMediaRouterCallback,
        MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
  }

  @Override
  protected void onPause() {
    // Remove the callback to stop device discovery
    mMediaRouter.removeCallback(mMediaRouterCallback);
    super.onPause();
  }

  private class MyMediaRouterCallback extends MediaRouter.Callback {

    @Override
    public void onRouteAdded(MediaRouter router, MediaRouter.RouteInfo info) {
      Log.d(TAG, "onRouteAdded: info=" + info);

      // Add route to list of discovered routes
      synchronized (this) {
        mRouteInfos.add(info);
        mRouteNames.add(info.getName() + " (" + info.getDescription()
            + ")");
        mAdapter.notifyDataSetChanged();
      }
    }

    @Override
    public void onRouteRemoved(MediaRouter router,
        MediaRouter.RouteInfo info) {
      Log.d(TAG, "onRouteRemoved: info=" + info);

      // Remove route from list of routes
      synchronized (this) {
        for (int i = 0; i < mRouteInfos.size(); i++) {
          MediaRouter.RouteInfo routeInfo = mRouteInfos.get(i);
          if (routeInfo.equals(info)) {
            mRouteInfos.remove(i);
            mRouteNames.remove(i);
            mAdapter.notifyDataSetChanged();
            return;
          }
        }
      }
    }

    @Override
    public void onRouteSelected(MediaRouter router, RouteInfo info) {
      Log.d(TAG, "onRouteSelected: info=" + info);

      mSelectedDevice = CastDevice.getFromBundle(info.getExtras());

      // Just display a message for now; In a real app this would be the
      // hook to connect to the selected device and launch the receiver
      // app
      Toast.makeText(MediaRouterDiscoveryActivity.this,
          getString(R.string.todo_connect), Toast.LENGTH_LONG).show();
    }

    @Override
    public void onRouteUnselected(MediaRouter router, RouteInfo info) {
      Log.d(TAG, "onRouteUnselected: info=" + info);
      mSelectedDevice = null;
    }

  }

}

Java Source Code List

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