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spr.com Chromecast & Android Deliver an incredible experience from your smartphone to your TV - Jorge Coca | Chicago Code Camp 2015 -

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spr.com Show me an example!

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spr.com What is Chromecast? • HDMI dongle for your TV • $35 • Smart TV • Cast content from your smartphone/table/computer to your TV

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spr.com Cast from… • Android • iOS • Google Chrome

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spr.com

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spr.com Architecture

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spr.com Sender & Receiver Sender and receiver will have to be connected to the same WIFI (or use guest mode)

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spr.com Sender • Android SDK • iOS SDK • Google Chrome SDK (desktop, mobile…) • No Windows Phone • No Internet Explorer/Safari…

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spr.com Receiver HTML5/Javascript app that displays content sent from the receiver

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spr.com Let’s talk about code

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spr.com … but first • Register your device in the Cast Developer Console • https://cast.google.com/publish/#/overview • Developer fees: $5

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spr.com Google Cast Developer Console • App Info: package name • Receiver info • Listing details (app marketing) • Get your APPLICATION ID

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spr.com Google Cast Design Checklist • Introduce Cast to users • Play content on selected chromecast device • Provide media controls on the notification bar • Media controls on lock screen • Mini controller available while the app is active

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spr.com Where do we start?

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spr.com Options • Chromecast SDK • Flexible • Complex • CastCompanionLibrary • Predefined scenarios • Limited flexibility

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spr.com CastCompanionLibrary • Library project to enable developers integrate Cast capabilities into their applications faster and easier • Developed by Google • Strongly recommended to use when developing audio/video apps

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spr.com Meet Woody! • App for tracking & discovering movies • Cast open source movies

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spr.com Introduce Cast to users Helps users to know that the sender app now supports Casting

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spr.com Notification controls

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spr.com Media Control Activity

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spr.com Media Control while app is active

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spr.com Lock Screen Controls

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spr.com CastManager • BaseCastManger: abstract class that handles most of connectivity issues that transcends the lifecycle of individual activities • Brain that updates NotificationService and MiniController accordingly • VideoCastManager: designed for video-centric apps

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spr.com VideoCastManager public class WoodyApplication extends Application { @Override public void onCreate() { super.onCreate(); videoCastManager = VideoCastManager.initialize(getApplicationContext(), Constants.CHROMECAST_APP_ID, null, null); videoCastManager.enableFeatures(VideoCastManager.FEATURE_NOTIFICATION | VideoCastManager.FEATURE_LOCKSCREEN | VideoCastManager.FEATURE_WIFI_RECONNECT | VideoCastManager.FEATURE_CAPTIONS_PREFERENCE | VideoCastManager.FEATURE_DEBUGGING); } }

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spr.com VideoCastManager public class WoodyApplication extends Application { @Override public void onCreate() { super.onCreate(); videoCastManager = VideoCastManager.initialize(getApplicationContext(), Constants.CHROMECAST_APP_ID, null, null); videoCastManager.enableFeatures(VideoCastManager.FEATURE_NOTIFICATION | VideoCastManager.FEATURE_LOCKSCREEN | VideoCastManager.FEATURE_WIFI_RECONNECT | VideoCastManager.FEATURE_CAPTIONS_PREFERENCE | VideoCastManager.FEATURE_DEBUGGING); } }

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spr.com VideoCastManager public class WoodyApplication extends Application { @Override public void onCreate() { super.onCreate(); videoCastManager = VideoCastManager.initialize(getApplicationContext(), Constants.CHROMECAST_APP_ID, null, null); videoCastManager.enableFeatures(VideoCastManager.FEATURE_NOTIFICATION | VideoCastManager.FEATURE_LOCKSCREEN | VideoCastManager.FEATURE_WIFI_RECONNECT | VideoCastManager.FEATURE_CAPTIONS_PREFERENCE | VideoCastManager.FEATURE_DEBUGGING); } }

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spr.com Cast icon

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spr.com menu.xml

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spr.com menu.xml

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spr.com BaseChromecastActivity public class BaseChromecastActivity extends ActionBarActivity { protected VideoCastManager videoCastManager; protected MiniController miniController; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); VideoCastManager.checkGooglePlayServices(this); videoCastManager = WoodyApplication.getCastManager(); showChromecastTutorial(); videoCastManager.reconnectSessionIfPossible(); }

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spr.com Check Google Play Services public class BaseChromecastActivity extends ActionBarActivity { protected VideoCastManager videoCastManager; protected MiniController miniController; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); VideoCastManager.checkGooglePlayServices(this); videoCastManager = WoodyApplication.getCastManager(); showChromecastTutorial(); videoCastManager.reconnectSessionIfPossible(); }

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spr.com BaseChromecastActivity @Override protected void onResume() { super.onResume(); videoCastManager = WoodyApplication.getCastManager(); miniController.setOnMiniControllerChangedListener(videoCastManager); videoCastManager.incrementUiCounter(); } @Override protected void onPause() { super.onPause(); videoCastManager.decrementUiCounter(); miniController.removeOnMiniControllerChangedListener(videoCastManager); }

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spr.com BaseChromecastActivity @Override protected void onResume() { super.onResume(); videoCastManager = WoodyApplication.getCastManager(); miniController.setOnMiniControllerChangedListener(videoCastManager); videoCastManager.incrementUiCounter(); } @Override protected void onPause() { super.onPause(); videoCastManager.decrementUiCounter(); miniController.removeOnMiniControllerChangedListener(videoCastManager); }

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spr.com BaseChromecastActivity @Override protected void onDestroy() { if (videoCastManager != null) { miniController.removeOnMiniControllerChangedListener(videoCastManager); videoCastManager.removeMiniController(miniController); videoCastManager.clearContext(this); } super.onDestroy(); }

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spr.com BaseChromecastActivity @Override public void setContentView(final int layoutResID) { RelativeLayout layout = (RelativeLayout) getLayoutInflater() .inflate(R.layout.activity_base_chromecast, null); miniController = (MiniController) layout.findViewById(R.id.mini_controller); videoCastManager.addMiniController(miniController); super.setContentView(layout); }

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spr.com BaseChromecastActivity @Override public void setContentView(final int layoutResID) { RelativeLayout layout = (RelativeLayout) getLayoutInflater() .inflate(R.layout.activity_base_chromecast, null); miniController = (MiniController) layout.findViewById(R.id.mini_controller); videoCastManager.addMiniController(miniController); super.setContentView(layout); }

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spr.com BaseChromecastActivity @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_base_navigation, menu); mediaRouteMenuItem = videoCastManager .addMediaRouterButton(menu, R.id.media_route_menu_item); return true; }

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spr.com BaseChromecastActivity @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_base_navigation, menu); mediaRouteMenuItem = videoCastManager .addMediaRouterButton(menu, R.id.media_route_menu_item); return true; }

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spr.com ReconnectionService Background service that handles reconnection logic when wifi connectivity is lost

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spr.com VideoCastController Activity Provides a default implementation of the player control screen.

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spr.com Register VideoCastControllerActivity

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spr.com Play content MediaInfo mediaInfo = buildMediaInfo(); Intent intent = new Intent(getActivity(), VideoCastControllerActivity.class); intent.putExtra(Constants.EXTRA_MEDIA, Utils.fromMediaInfo(mediaInfo)); intent.putExtra(Constants.EXTRA_SHOULD_START, true); startActivity(intent);

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spr.com Play content MediaInfo mediaInfo = buildMediaInfo(); Intent intent = new Intent(getActivity(), VideoastControllerActivity.class); intent.putExtra(Constants.EXTRA_MEDIA, Utils.fromMediaInfo(mediaInfo)); intent.putExtra(Constants.EXTRA_SHOULD_START, true); startActivity(intent);

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spr.com MediaInfo private MediaInfo buildMediaInfo() { MediaMetadata movieMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); movieMetadata.putString(MediaMetadata.KEY_TITLE, movieDetails.getTitle()); movieMetadata.putString(MediaMetadata.KEY_SUBTITLE, movieDetails.getGenresWithCommas()); movieMetadata.putString(MediaMetadata.KEY_STUDIO, movieDetails.getProductionCompaniesWithCommas()); movieMetadata.addImage(new WebImage(Uri.parse(movieDetails.getPosterPath()))); return new MediaInfo.Builder(movieDetails.getMovieUrl()) .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED) .setContentType("video/mp4") .setMetadata(movieMetadata) .build(); }

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spr.com MediaInfo private MediaInfo buildMediaInfo() { MediaMetadata movieMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); movieMetadata.putString(MediaMetadata.KEY_TITLE, movieDetails.getTitle()); movieMetadata.putString(MediaMetadata.KEY_SUBTITLE, movieDetails.getGenresWithCommas()); movieMetadata.putString(MediaMetadata.KEY_STUDIO, movieDetails.getProductionCompaniesWithCommas()); movieMetadata.addImage(new WebImage(Uri.parse(movieDetails.getPosterPath()))); return new MediaInfo.Builder(movieDetails.getMovieUrl()) .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED) .setContentType("video/mp4") .setMetadata(movieMetadata) .build(); }

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spr.com VideoCastNotificationService Service that allows notifications to appear when needed beyond the availability of the application

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spr.com VideoCastNotificationService

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spr.com MiniController • Compound control that provides a mini-controller for the client

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spr.com In your layout

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spr.com Introduce Cast to users Helps users to know that the sender app now supports Casting

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spr.com ShowCaseView • Not included in the CastCompanionLibrary, but used by Google in their examples • https://github.com/amlcurran/ShowcaseView • Easily customizable: styles.xml

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spr.com ShowCaseView private void showChromecastTutorial() { Menu menu = toolbar.getMenu(); View view = menu.findItem(R.id.media_route_menu_item).getActionView(); if (view != null && view instanceof MediaRouteButton) { new ShowcaseView.Builder(this) .setTarget(new ViewTarget(view)) .setContentTitle("Touch here to cast videos") .build(); SharedPreferencesUtils.saveBooleanSharedPreferences(this, PREF_USER_LEARNED_CHROMECAST, true); } }

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spr.com Need to declare a target private void showChromecastTutorial() { Menu menu = toolbar.getMenu(); View view = menu.findItem(R.id.media_route_menu_item).getActionView(); if (view != null && view instanceof MediaRouteButton) { new ShowcaseView.Builder(this) .setTarget(new ViewTarget(view)) .setContentTitle("Touch here to cast videos") .build(); SharedPreferencesUtils.saveBooleanSharedPreferences(this, PREF_USER_LEARNED_CHROMECAST, true); } }

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spr.com Cool, right?

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spr.com Let’s code the receiver

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spr.com Let’s code the receiver StyledMediaReceiver

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spr.com

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spr.com Styled Media Receiver .background { background: #0c1821; } .logo { background-image: url("http://your_url.com/woody_transparent.png"); } .progressBar { background-color: #d7263d; } .splash { background-image: url("http://your_url.com/splash.png") } .watermark { background-image: url("http://your_url.com/watermark.png"); background-size: 100px 100px; }

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spr.com

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spr.com

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spr.com But what is really VideoCastManager?

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spr.com Sender Application Flow • Search for available cast devices • Establish connection with selected Cast device • Launch receiver and stream content using sender as remote • Disconnect from selected Cast device

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spr.com Search • Sender app starts MediaRouter device discover • MediaRouter informs sender app of the route the user selected

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spr.com Search • MediaRouteActionProvider: displays cast button in the ActionBar to allow the user to select routes and control the selected route • MediaRouter: allows apps to control the routing of media channels and streams from the device to external destinations

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spr.com Connect • Sender app retrieves CastDevice instance • Sender app creates a GoogleApiClient • Sender app connects the GoogleApiClient • SDK confirms that GoogleApiClient is connected

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spr.com Launch receiver & Stream content • Sender app launches the receiver app • SDK confirms that the receiver app is connected • Sender app creates a communication channel • Sender sends a message to the receiver over the communication channel

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spr.com Disconnection • Unregister all callbacks • Remove objects from memory

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spr.com Chromecast SDK: Chromecaster https://github.com/jorgecoca/ Chromecaster • Implementation of “VideoCastManager”

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spr.com Dependencies dependencies { compile "com.android.support:appcompat-v7:22.0.0" compile "com.android.support:mediarouter-v7:22.0.0" compile "com.google.android.gms:play-services:7.0.0" }

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spr.com AndroidManifest.xml

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spr.com Adding cast button: MediaRouteItem • Cast Menu, not connected: receivers available • Cast Menu, connected but not casting • Cast Menu, while casting

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spr.com Step 1: Connect to Cast device

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spr.com menu.xml

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spr.com Activity setup public class ChromecastActivity extends ActionBarActivity { private MediaRouter mediaRouter; private MediaRouteSelector mediaRouteSelector; private MediaRouterCallback mediaRouterCallback; private CastDevice selectedCastDevice; private Cast.Listener castClientListener; private GoogleApiClient apiClient; private RemoteMediaPlayer remoteMediaPlayer; private boolean waitingForReconnect; private boolean applicationStarted = false; private boolean videoIsLoaded; private boolean isPlaying;

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spr.com Activity setup public class ChromecastActivity extends ActionBarActivity { private MediaRouter mediaRouter; private MediaRouteSelector mediaRouteSelector; private MediaRouterCallback mediaRouterCallback; private CastDevice selectedCastDevice; private Cast.Listener castClientListener; private GoogleApiClient apiClient; private RemoteMediaPlayer remoteMediaPlayer; private boolean waitingForReconnect; private boolean applicationStarted = false; private boolean videoIsLoaded; private boolean isPlaying;

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spr.com Activity setup public class ChromecastActivity extends ActionBarActivity { private MediaRouter mediaRouter; private MediaRouteSelector mediaRouteSelector; private MediaRouterCallback mediaRouterCallback; private CastDevice selectedCastDevice; private Cast.Listener castClientListener; private GoogleApiClient apiClient; private RemoteMediaPlayer remoteMediaPlayer; private boolean waitingForReconnect; private boolean applicationStarted = false; private boolean videoIsLoaded; private boolean isPlaying;

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spr.com Activity setup public class ChromecastActivity extends ActionBarActivity { private MediaRouter mediaRouter; private MediaRouteSelector mediaRouteSelector; private MediaRouterCallback mediaRouterCallback; private CastDevice selectedCastDevice; private Cast.Listener castClientListener; private GoogleApiClient apiClient; private RemoteMediaPlayer remoteMediaPlayer; private boolean waitingForReconnect; private boolean applicationStarted = false; private boolean videoIsLoaded; private boolean isPlaying;

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spr.com onCreate() @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_chromecast); bindViews(); initMediaRouter(); }

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spr.com onCreate() @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_chromecast); bindViews(); initMediaRouter(); }

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spr.com initMediaRouter() private void initMediaRouter() { // Configure device discovery mediaRouter = MediaRouter.getInstance(getApplicationContext()); mediaRouteSelector = new MediaRouteSelector.Builder() .addControlCategory( CastMediaControlIntent.categoryForCast(Constants.CHROMECAST_APP_ID)) .build(); mediaRouterCallback = new MediaRouterCallback(); }

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spr.com initMediaRouter() private void initMediaRouter() { // Configure device discovery mediaRouter = MediaRouter.getInstance(getApplicationContext()); mediaRouteSelector = new MediaRouteSelector.Builder() .addControlCategory( CastMediaControlIntent.categoryForCast(Constants.CHROMECAST_APP_ID)) .build(); mediaRouterCallback = new MediaRouterCallback(); }

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spr.com initMediaRouter() private void initMediaRouter() { // Configure device discovery mediaRouter = MediaRouter.getInstance(getApplicationContext()); mediaRouteSelector = new MediaRouteSelector.Builder() .addControlCategory( CastMediaControlIntent.categoryForCast(Constants.CHROMECAST_APP_ID)) .build(); mediaRouterCallback = new MediaRouterCallback(); }

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spr.com initMediaRouter() private void initMediaRouter() { // Configure device discovery mediaRouter = MediaRouter.getInstance(getApplicationContext()); mediaRouteSelector = new MediaRouteSelector.Builder() .addControlCategory( CastMediaControlIntent.categoryForCast(Constants.CHROMECAST_APP_ID)) .build(); mediaRouterCallback = new MediaRouterCallback(); }

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spr.com Setup the icon on the ActionBar @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_chromecast, menu); MenuItem mediaRouteMenuItem = menu.findItem(R.id.media_route_menu_item); MediaRouteActionProvider mediaRouteActionProvider = (MediaRouteActionProvider) MenuItemCompat.getActionProvider(mediaRouteMenuItem); mediaRouteActionProvider.setRouteSelector(mediaRouteSelector); return true; }

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spr.com Setup the icon on the ActionBar @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_chromecast, menu); MenuItem mediaRouteMenuItem = menu.findItem(R.id.media_route_menu_item); MediaRouteActionProvider mediaRouteActionProvider = (MediaRouteActionProvider) MenuItemCompat.getActionProvider(mediaRouteMenuItem); mediaRouteActionProvider.setRouteSelector(mediaRouteSelector); return true; }

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spr.com Associate media router callbacks @Override protected void onResume() { super.onResume(); mediaRouter.addCallback(mediaRouteSelector, mediaRouterCallback, MediaRouter.CALLBACK_FLAG_PERFORM_ACTIVE_SCAN); } @Override protected void onPause() { if (isFinishing()) { mediaRouter.removeCallback(mediaRouterCallback); } super.onPause(); }

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spr.com Associate media router callbacks @Override protected void onResume() { super.onResume(); mediaRouter.addCallback(mediaRouteSelector, mediaRouterCallback, MediaRouter.CALLBACK_FLAG_PERFORM_ACTIVE_SCAN); } @Override protected void onPause() { if (isFinishing()) { mediaRouter.removeCallback(mediaRouterCallback); } super.onPause(); }

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spr.com MediaRouterCallback • Extension of provided MediaRouter.Callback • Need to override two methods: • onRouteSelected(MediaRouter router, RouteInfo info) • onRouteUnselected(MediaRouter router, RouteInfo info)

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spr.com private class MediaRouterCallback extends MediaRouter.Callback { @Override public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo route) { initCastClientListener(); initRemoteMediaPlayer(); selectedCastDevice = CastDevice.getFromBundle(route.getExtras()); launchReceiver(); } @Override public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) { teardown(); selectedCastDevice = null; videoIsLoaded = false; } }

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spr.com private class MediaRouterCallback extends MediaRouter.Callback { @Override public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo route) { initCastClientListener(); initRemoteMediaPlayer(); selectedCastDevice = CastDevice.getFromBundle(route.getExtras()); launchReceiver(); } @Override public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) { teardown(); selectedCastDevice = null; videoIsLoaded = false; } }

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spr.com initCastClientListener() private void initCastClientListener() { castClientListener = new Cast.Listener() { @Override public void onApplicationDisconnected(int statusCode) { teardown(); } }; }

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spr.com private class MediaRouterCallback extends MediaRouter.Callback { @Override public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo route) { initCastClientListener(); initRemoteMediaPlayer(); selectedCastDevice = CastDevice.getFromBundle(route.getExtras()); launchReceiver(); } @Override public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) { teardown(); selectedCastDevice = null; videoIsLoaded = false; } }

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spr.com initRemoteMediaPlayer() private void initRemoteMediaPlayer() { remoteMediaPlayer = new RemoteMediaPlayer(); remoteMediaPlayer.setOnStatusUpdatedListener(new RemoteMediaPlayer.OnStatusUpdatedListener() { @Override public void onStatusUpdated() { MediaStatus mediaStatus = remoteMediaPlayer.getMediaStatus(); isPlaying = mediaStatus.getPlayerState() == MediaStatus.PLAYER_STATE_PLAYING; } }); }

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spr.com initRemoteMediaPlayer() private void initRemoteMediaPlayer() { remoteMediaPlayer = new RemoteMediaPlayer(); remoteMediaPlayer.setOnStatusUpdatedListener(new RemoteMediaPlayer.OnStatusUpdatedListener() { @Override public void onStatusUpdated() { MediaStatus mediaStatus = remoteMediaPlayer.getMediaStatus(); isPlaying = mediaStatus.getPlayerState() == MediaStatus.PLAYER_STATE_PLAYING; } }); }

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spr.com private class MediaRouterCallback extends MediaRouter.Callback { @Override public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo route) { initCastClientListener(); initRemoteMediaPlayer(); selectedCastDevice = CastDevice.getFromBundle(route.getExtras()); launchReceiver(); } @Override public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) { teardown(); selectedCastDevice = null; videoIsLoaded = false; } }

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spr.com What do we have so far?

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spr.com Step 2: Launch receiver private class MediaRouterCallback extends MediaRouter.Callback { @Override public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo route) { initCastClientListener(); initRemoteMediaPlayer(); selectedCastDevice = CastDevice.getFromBundle(route.getExtras()); launchReceiver(); } @Override public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) { teardown(); selectedCastDevice = null; videoIsLoaded = false; } }

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spr.com launchReceiver() private void launchReceiver() { Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions.builder(selectedCastDevice, castClientListener); ConnectionCallbacks connectionCallbacks = new ConnectionCallbacks(); ConnectionFailedListener connectionFailedListener = new ConnectionFailedListener(); apiClient = new GoogleApiClient.Builder(getApplicationContext()) .addApi(Cast.API, apiOptionsBuilder.build()) .addConnectionCallbacks(connectionCallbacks) .addOnConnectionFailedListener(connectionFailedListener) .build(); apiClient.connect(); }

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spr.com launchReceiver() private void launchReceiver() { Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions.builder(selectedCastDevice, castClientListener); ConnectionCallbacks connectionCallbacks = new ConnectionCallbacks(); ConnectionFailedListener connectionFailedListener = new ConnectionFailedListener(); apiClient = new GoogleApiClient.Builder(getApplicationContext()) .addApi(Cast.API, apiOptionsBuilder.build()) .addConnectionCallbacks(connectionCallbacks) .addOnConnectionFailedListener(connectionFailedListener) .build(); apiClient.connect(); }

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spr.com launchReceiver() private void launchReceiver() { Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions.builder(selectedCastDevice, castClientListener); ConnectionCallbacks connectionCallbacks = new ConnectionCallbacks(); ConnectionFailedListener connectionFailedListener = new ConnectionFailedListener(); apiClient = new GoogleApiClient.Builder(getApplicationContext()) .addApi(Cast.API, apiOptionsBuilder.build()) .addConnectionCallbacks(connectionCallbacks) .addOnConnectionFailedListener(connectionFailedListener) .build(); apiClient.connect(); }

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spr.com launchReceiver() private void launchReceiver() { Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions.builder(selectedCastDevice, castClientListener); ConnectionCallbacks connectionCallbacks = new ConnectionCallbacks(); ConnectionFailedListener connectionFailedListener = new ConnectionFailedListener(); apiClient = new GoogleApiClient.Builder(getApplicationContext()) .addApi(Cast.API, apiOptionsBuilder.build()) .addConnectionCallbacks(connectionCallbacks) .addOnConnectionFailedListener(connectionFailedListener) .build(); apiClient.connect(); }

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spr.com launchReceiver() private void launchReceiver() { Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions.builder(selectedCastDevice, castClientListener); ConnectionCallbacks connectionCallbacks = new ConnectionCallbacks(); ConnectionFailedListener connectionFailedListener = new ConnectionFailedListener(); apiClient = new GoogleApiClient.Builder(getApplicationContext()) .addApi(Cast.API, apiOptionsBuilder.build()) .addConnectionCallbacks(connectionCallbacks) .addOnConnectionFailedListener(connectionFailedListener) .build(); apiClient.connect(); }

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spr.com ConnectionFailedListener private class ConnectionFailedListener implements GoogleApiClient.OnConnectionFailedListener { @Override public void onConnectionFailed(ConnectionResult connectionResult) { teardown(); } }

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spr.com ConnectionCallbacks • Extension for GoogleApiClient.ConnectionCallbacks • It is used to launch the receiver specified by the APPLICATION ID • Two abstract methods: • onConnected will be invoked asynchronously when the connect request has successfully completed • onConnectionSuspended is called when the client is temporarily in a disconnected state

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spr.com private class ConnectionCallbacks implements GoogleApiClient.ConnectionCallbacks { @Override public void onConnected(Bundle bundle) { // implementation here } @Override public void onConnectionSuspended(int i) { waitingForReconnect = true; } }

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spr.com private class ConnectionCallbacks implements GoogleApiClient.ConnectionCallbacks { @Override public void onConnected(Bundle bundle) { // implementation here } @Override public void onConnectionSuspended(int i) { waitingForReconnect = true; } }

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spr.com @Override public void onConnected(Bundle bundle) { if (waitingForReconnect) { waitingForReconnect = false; reconnectChannels(bundle); } else { // Happy path :) } }

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spr.com Don’t lose hope! private void reconnectChannels(Bundle bundle) { if ((bundle != null) && bundle.getBoolean(Cast.EXTRA_APP_NO_LONGER_RUNNING)) { teardown(); } else { try { Cast.CastApi.setMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace(), remoteMediaPlayer); } catch (IOException e) {} } }

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spr.com @Override public void onConnected(Bundle bundle) { if (waitingForReconnect) { waitingForReconnect = false; reconnectChannels(bundle); } else { // Happy path :) } }

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spr.com try { Cast.CastApi.launchApplication(apiClient, Constants.CHROMECAST_APP_ID, false) .setResultCallback(new ResultCallback() { @Override public void onResult(Cast.ApplicationConnectionResult applicationConnectionResult) { Status status = applicationConnectionResult.getStatus(); if (status.isSuccess()) { // Useful values from metadata: sessionID, applicationStatus, wasLaunched ApplicationMetadata applicationMetadata = applicationConnectionResult.getApplicationMetadata(); applicationStarted = true; reconnectChannels(null); } } }); } catch (Exception e) {}

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spr.com try { Cast.CastApi.launchApplication(apiClient, Constants.CHROMECAST_APP_ID, false) .setResultCallback(new ResultCallback() { @Override public void onResult(Cast.ApplicationConnectionResult applicationConnectionResult) { Status status = applicationConnectionResult.getStatus(); if (status.isSuccess()) { // Useful values from metadata: sessionID, applicationStatus, wasLaunched ApplicationMetadata applicationMetadata = applicationConnectionResult.getApplicationMetadata(); applicationStarted = true; reconnectChannels(null); } } }); } catch (Exception e) {}

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spr.com try { Cast.CastApi.launchApplication(apiClient, Constants.CHROMECAST_APP_ID, false) .setResultCallback(new ResultCallback() { @Override public void onResult(Cast.ApplicationConnectionResult applicationConnectionResult) { Status status = applicationConnectionResult.getStatus(); if (status.isSuccess()) { // Useful values from metadata: sessionID, applicationStatus, wasLaunched ApplicationMetadata applicationMetadata = applicationConnectionResult.getApplicationMetadata(); applicationStarted = true; reconnectChannels(null); } } }); } catch (Exception e) {}

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spr.com try { Cast.CastApi.launchApplication(apiClient, Constants.CHROMECAST_APP_ID, false) .setResultCallback(new ResultCallback() { @Override public void onResult(Cast.ApplicationConnectionResult applicationConnectionResult) { Status status = applicationConnectionResult.getStatus(); if (status.isSuccess()) { // Useful values from metadata: sessionID, applicationStatus, wasLaunched ApplicationMetadata applicationMetadata = applicationConnectionResult.getApplicationMetadata(); applicationStarted = true; reconnectChannels(null); } } }); } catch (Exception e) {}

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spr.com What do we have so far?

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spr.com Step 3: Let’s play some videos!

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spr.com onCreate() @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_chromecast); bindViews(); initMediaRouter(); }

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spr.com private Button videoButton; private void bindViews() { videoButton = (Button) findViewById(R.id.video_button); videoButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (!videoIsLoaded) { startVideo(); } else { controlVideo(); } } }); }

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spr.com private Button videoButton; private void bindViews() { videoButton = (Button) findViewById(R.id.video_button); videoButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (!videoIsLoaded) { startVideo(); } else { controlVideo(); } } }); }

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spr.com private void startVideo() { MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); mediaMetadata.putString(MediaMetadata.KEY_TITLE, getString(R.string.video_title)); MediaInfo mediaInfo = new MediaInfo.Builder(getString(R.string.video_url)) .setContentType(getString(R.string.content_type)) .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED) .setMetadata(mediaMetadata) .build(); try { remoteMediaPlayer.load(apiClient, mediaInfo, true) .setResultCallback(new ResultCallback() { @Override public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) { if (mediaChannelResult.getStatus().isSuccess()) { videoIsLoaded = true; videoButton.setText(getString(R.string.pause_video)); } } }); } catch (Exception e) {} }

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spr.com private void startVideo() { MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); mediaMetadata.putString(MediaMetadata.KEY_TITLE, getString(R.string.video_title)); MediaInfo mediaInfo = new MediaInfo.Builder(getString(R.string.video_url)) .setContentType(getString(R.string.content_type)) .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED) .setMetadata(mediaMetadata) .build(); try { remoteMediaPlayer.load(apiClient, mediaInfo, true) .setResultCallback(new ResultCallback() { @Override public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) { if (mediaChannelResult.getStatus().isSuccess()) { videoIsLoaded = true; videoButton.setText(getString(R.string.pause_video)); } } }); } catch (Exception e) {} }

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spr.com private void startVideo() { MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); mediaMetadata.putString(MediaMetadata.KEY_TITLE, getString(R.string.video_title)); MediaInfo mediaInfo = new MediaInfo.Builder(getString(R.string.video_url)) .setContentType(getString(R.string.content_type)) .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED) .setMetadata(mediaMetadata) .build(); try { remoteMediaPlayer.load(apiClient, mediaInfo, true) .setResultCallback(new ResultCallback() { @Override public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) { if (mediaChannelResult.getStatus().isSuccess()) { videoIsLoaded = true; videoButton.setText(getString(R.string.pause_video)); } } }); } catch (Exception e) {} }

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spr.com private void startVideo() { MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); mediaMetadata.putString(MediaMetadata.KEY_TITLE, getString(R.string.video_title)); MediaInfo mediaInfo = new MediaInfo.Builder(getString(R.string.video_url)) .setContentType(getString(R.string.content_type)) .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED) .setMetadata(mediaMetadata) .build(); try { remoteMediaPlayer.load(apiClient, mediaInfo, true) .setResultCallback(new ResultCallback() { @Override public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) { if (mediaChannelResult.getStatus().isSuccess()) { videoIsLoaded = true; videoButton.setText(getString(R.string.pause_video)); } } }); } catch (Exception e) {} }

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spr.com controlVideo() private void bindViews() { videoButton = (Button) findViewById(R.id.video_button); videoButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (!videoIsLoaded) { startVideo(); } else { controlVideo(); } } }); }

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spr.com controlVideo() private void controlVideo() { if (remoteMediaPlayer == null || !videoIsLoaded) return; if (isPlaying) { remoteMediaPlayer.pause(apiClient); videoButton.setText(getString(R.string.play_video)); } else { remoteMediaPlayer.play(apiClient); videoButton.setText(getString(R.string.pause_video)); } }

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spr.com Step 4: Disconnection private void teardown() { if (apiClient != null) { if (applicationStarted) { try { Cast.CastApi.stopApplication(apiClient); if (remoteMediaPlayer != null) { Cast.CastApi.removeMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace()); remoteMediaPlayer = null; } } catch (IOException e) {} applicationStarted = false; } if (apiClient.isConnected()) { apiClient.disconnect(); } } selectedCastDevice = null; videoIsLoaded = false; }

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spr.com Disconnection private void teardown() { if (apiClient != null) { if (applicationStarted) { try { Cast.CastApi.stopApplication(apiClient); if (remoteMediaPlayer != null) { Cast.CastApi.removeMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace()); remoteMediaPlayer = null; } } catch (IOException e) {} applicationStarted = false; } if (apiClient.isConnected()) { apiClient.disconnect(); } } selectedCastDevice = null; videoIsLoaded = false; }

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spr.com Disconnection private void teardown() { if (apiClient != null) { if (applicationStarted) { try { Cast.CastApi.stopApplication(apiClient); if (remoteMediaPlayer != null) { Cast.CastApi.removeMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace()); remoteMediaPlayer = null; } } catch (IOException e) {} applicationStarted = false; } if (apiClient.isConnected()) { apiClient.disconnect(); } } selectedCastDevice = null; videoIsLoaded = false; }

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spr.com Disconnection private void teardown() { if (apiClient != null) { if (applicationStarted) { try { Cast.CastApi.stopApplication(apiClient); if (remoteMediaPlayer != null) { Cast.CastApi.removeMessageReceivedCallbacks(apiClient, remoteMediaPlayer.getNamespace()); remoteMediaPlayer = null; } } catch (IOException e) {} applicationStarted = false; } if (apiClient.isConnected()) { apiClient.disconnect(); } } selectedCastDevice = null; videoIsLoaded = false; }

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spr.com

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spr.com Let’s code the receiver

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spr.com Let’s code the receiver

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spr.com Types of receiver • Default: no code involved • Styled Media Receiver: CSS file with predefined fields • Custom: full control of what’s displayed on the TV

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spr.com Custom Receiver • Full control of what happens on the receiver • No predefined fields • Need to host on secure servers

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spr.com Things to know

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spr.com Supported media: Image Images have a display size limitation of 720p • BMP • GIF • JPEG • PNG • WEBP

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spr.com Audio Codecs • HE-AAC • AAC LC • MP3 • Vorbis • WAV

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spr.com Video • H.264 High Profile Level 4.1 • VP8 • Subtitles: • TTML • WebVTT • CEA-608

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spr.com Helpful links • https://developers.google.com/cast/ • https://github.com/googlecast • This repo contains different examples on how to use Chromecast

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spr.com Questions?

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spr.com Get the slides & spread the word! • https://speakerdeck.com/jorgecoca/chromecast-and-android • www.jorgecoca.com

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spr.com Follow me on Twitter & Github @jcocaramos jorgecoca

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spr.com You’re awesome!