Java tutorial
package com.ekeitho.sound; /* Copyright (C) 2014 Google Inc. All Rights Reserved. * * 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. */ import java.io.IOException; import java.util.ArrayDeque; import java.util.ArrayList; import java.util.Queue; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.os.PersistableBundle; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.support.v7.app.MediaRouteActionProvider; 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.KeyEvent; import android.view.Menu; import android.view.MenuItem; import com.google.android.gms.cast.Cast; import com.google.android.gms.cast.Cast.ApplicationConnectionResult; import com.google.android.gms.cast.CastDevice; import com.google.android.gms.cast.CastMediaControlIntent; import com.google.android.gms.cast.MediaInfo; import com.google.android.gms.cast.MediaMetadata; import com.google.android.gms.cast.MediaStatus; import com.google.android.gms.cast.RemoteMediaPlayer; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.api.GoogleApiClient; import com.google.android.gms.common.api.ResultCallback; import com.google.android.gms.common.api.Status; import com.google.android.gms.common.images.WebImage; /** * Main activity to send messages to the receiver. */ public class MainActivity extends ActionBarActivity { private static final String TAG = MainActivity.class.getSimpleName(); private static final int REQUEST_CODE = 1; private static int test = 1; private MediaRouter mMediaRouter; private MediaRouteSelector mMediaRouteSelector; private MediaRouter.Callback mMediaRouterCallback; private CastDevice mSelectedDevice; private GoogleApiClient mApiClient; private Cast.Listener mCastListener; private ConnectionCallbacks mConnectionCallbacks; private ConnectionFailedListener mConnectionFailedListener; private boolean mApplicationStarted; private boolean mWaitingForReconnect; private String mSessionId; private RemoteMediaPlayer mRemoteMediaPlayer; private Queue<RouteInfo> routes; private Queue<String> postponedCasts; private SoundCastFragment soundCastFragment; private String shareMsgFromSoundcloud; /* this is used when the app is open and the user wants to share from soundcloud */ private static int hasOpened = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.v("show up", "here!"); setContentView(R.layout.activity_main); /* intiialize data structs */ routes = new ArrayDeque<>(); postponedCasts = new ArrayDeque<>(); /* get reference to our fragment */ soundCastFragment = (SoundCastFragment) getSupportFragmentManager().findFragmentById(R.id.castFragment); // Configure Cast device discovery mMediaRouter = MediaRouter.getInstance(getApplicationContext()); mMediaRouteSelector = new MediaRouteSelector.Builder().addControlCategory( CastMediaControlIntent.categoryForCast(getResources().getString(R.string.app_id))).build(); mMediaRouterCallback = new MyMediaRouterCallback(); /* initialize our cast media player */ mRemoteMediaPlayer = new RemoteMediaPlayer(); shareMsgFromSoundcloud = handleIncomingIntentShareIfAny(); /* this will happen when user wants to share from soundcloud & app is open */ if (hasOpened > 0) { routes.add(mMediaRouter.getRoutes().get(1)); postponedCasts.add(shareMsgFromSoundcloud); if (routes.peek().isSelected()) { mMediaRouter.unselect(1); } routes.peek().select(); } /* this will happen if share happens and the app isn't open yet */ else if (shareMsgFromSoundcloud != null) { postponedCasts.add(shareMsgFromSoundcloud); } /* update to show change in phase */ hasOpened++; } public boolean dispatchKeyEvent(KeyEvent event) { double VOLUME_INCREMENT = 0.05; int action = event.getAction(); int keyCode = event.getKeyCode(); switch (keyCode) { case KeyEvent.KEYCODE_VOLUME_UP: if (action == KeyEvent.ACTION_DOWN) { if (mRemoteMediaPlayer != null) { double currentVolume = Cast.CastApi.getVolume(mApiClient); if (currentVolume < 1.0) { try { Cast.CastApi.setVolume(mApiClient, Math.min(currentVolume + VOLUME_INCREMENT, 1.0)); } catch (Exception e) { Log.e(TAG, "unable to set volume", e); } } } else { Log.e(TAG, "dispatchKeyEvent - volume up"); } } return true; case KeyEvent.KEYCODE_VOLUME_DOWN: if (action == KeyEvent.ACTION_DOWN) { if (mRemoteMediaPlayer != null) { double currentVolume = Cast.CastApi.getVolume(mApiClient); if (currentVolume > 0.0) { try { Cast.CastApi.setVolume(mApiClient, Math.max(currentVolume - VOLUME_INCREMENT, 0.0)); } catch (Exception e) { Log.e(TAG, "unable to set volume", e); } } } else { Log.e(TAG, "dispatchKeyEvent - volume down"); } } return true; default: return super.dispatchKeyEvent(event); } } @Override protected void onResume() { super.onResume(); // Start media router discovery mMediaRouter.addCallback(mMediaRouteSelector, mMediaRouterCallback, MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY); } public boolean isConnected() { return mApplicationStarted; } @Override protected void onPause() { if (isFinishing()) { // End media router discovery mMediaRouter.removeCallback(mMediaRouterCallback); } super.onPause(); } @Override public void onDestroy() { teardown(); super.onDestroy(); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); getMenuInflater().inflate(R.menu.menu_main, menu); MenuItem castMenuItem = menu.findItem(R.id.media_route_menu_item); MediaRouteActionProvider mediaRouteActionProvider = (MediaRouteActionProvider) MenuItemCompat .getActionProvider(castMenuItem); // Set the MediaRouteActionProvider selector for device discovery. mediaRouteActionProvider.setRouteSelector(mMediaRouteSelector); return true; } /** * Callback for MediaRouter events */ private class MyMediaRouterCallback extends MediaRouter.Callback { @Override public void onRouteAdded(MediaRouter router, RouteInfo route) { super.onRouteAdded(router, route); /* there could be more than one route seen */ Log.v("route", "added!"); if (!routes.add(route)) { Log.e(TAG, "Adding to queue failed."); } /* lets launch the cast right away for the user */ if (shareMsgFromSoundcloud != null) { routes.peek().select(); } } @Override public void onRouteSelected(MediaRouter router, RouteInfo info) { Log.d(TAG, "onRouteSelected"); // Handle the user route selection. mSelectedDevice = CastDevice.getFromBundle(info.getExtras()); launchReceiver(); } @Override public void onRouteUnselected(MediaRouter router, RouteInfo info) { Log.d(TAG, "onRouteUnselected: info=" + info); teardown(); mSelectedDevice = null; } } /** * Start the receiver app */ private void launchReceiver() { try { mCastListener = new Cast.Listener() { @Override public void onApplicationDisconnected(int errorCode) { Log.d(TAG, "application has stopped"); teardown(); } }; // Connect to Google Play services mConnectionCallbacks = new ConnectionCallbacks(); mConnectionFailedListener = new ConnectionFailedListener(); Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions.builder(mSelectedDevice, mCastListener); mApiClient = new GoogleApiClient.Builder(this).addApi(Cast.API, apiOptionsBuilder.build()) .addConnectionCallbacks(mConnectionCallbacks) .addOnConnectionFailedListener(mConnectionFailedListener).build(); mApiClient.connect(); } catch (Exception e) { Log.e(TAG, "Failed launchReceiver", e); } } /** * Google Play services callbacks */ private class ConnectionCallbacks implements GoogleApiClient.ConnectionCallbacks { @Override public void onConnected(Bundle connectionHint) { Log.d(TAG, "onConnected"); if (mApiClient == null) { // We got disconnected while this runnable was pending // execution. return; } try { if (mWaitingForReconnect) { mWaitingForReconnect = false; // Check if the receiver app is still running if ((connectionHint != null) && connectionHint.getBoolean(Cast.EXTRA_APP_NO_LONGER_RUNNING)) { Log.d(TAG, "App is no longer running"); teardown(); } else { // Re-create the custom message channel try { Cast.CastApi.setMessageReceivedCallbacks(mApiClient, mRemoteMediaPlayer.getNamespace(), mRemoteMediaPlayer); } catch (IOException e) { Log.e(TAG, "Exception while creating channel", e); } } } else { // Launch the receiver app Cast.CastApi.launchApplication(mApiClient, getString(R.string.app_id), false) .setResultCallback(new ResultCallback<Cast.ApplicationConnectionResult>() { @Override public void onResult(ApplicationConnectionResult result) { Status status = result.getStatus(); if (status.isSuccess()) { // Create the custom message // channel try { Cast.CastApi.setMessageReceivedCallbacks(mApiClient, mRemoteMediaPlayer.getNamespace(), mRemoteMediaPlayer); } catch (IOException e) { Log.e(TAG, "Exception while creating media channel", e); } mApplicationStarted = true; mRemoteMediaPlayer.requestStatus(mApiClient).setResultCallback( new ResultCallback<RemoteMediaPlayer.MediaChannelResult>() { @Override public void onResult( RemoteMediaPlayer.MediaChannelResult result) { if (!result.getStatus().isSuccess()) { Log.e(TAG, "Failed to request status."); } else { if (postponedCasts.peek() != null) { soundCastFragment .getSoundcloudInfo(postponedCasts.poll()); } } } }); } else { Log.e(TAG, "application could not launch"); teardown(); } } }); } } catch (Exception e) { Log.e(TAG, "Failed to launch application", e); } } @Override public void onConnectionSuspended(int cause) { Log.d(TAG, "onConnectionSuspended"); mWaitingForReconnect = true; } } /** * Google Play services callbacks */ private class ConnectionFailedListener implements GoogleApiClient.OnConnectionFailedListener { @Override public void onConnectionFailed(ConnectionResult result) { Log.e(TAG, "onConnectionFailed "); teardown(); } } /** * Tear down the connection to the receiver */ private void teardown() { Log.d(TAG, "teardown"); if (mApiClient != null) { if (mApplicationStarted) { if (mApiClient.isConnected() || mApiClient.isConnecting()) { try { Cast.CastApi.stopApplication(mApiClient, mSessionId); if (mRemoteMediaPlayer != null) { Cast.CastApi.removeMessageReceivedCallbacks(mApiClient, mRemoteMediaPlayer.getNamespace()); mRemoteMediaPlayer = null; } } catch (IOException e) { Log.e(TAG, "Exception while removing channel", e); } mApiClient.disconnect(); } mApplicationStarted = false; } mApiClient = null; } mSelectedDevice = null; mWaitingForReconnect = false; mSessionId = null; } private String handleIncomingIntentShareIfAny() { // Get intent, action and MIME type Intent intent = getIntent(); String action = intent.getAction(); String type = intent.getType(); /* soundclouds share link comes in second and will not have a split greater than 0! hackity hack hack! */ if (Intent.ACTION_SEND.equals(action) && type != null) { if ("text/plain".equals(type)) { String input = intent.getStringExtra(Intent.EXTRA_TEXT); return input.split("\n")[1]; } } return null; } /* this is useful if the user isn't connected to a cast yet, but clicks the cast button, so lets not let them do more work! */ public void addToPostponedQueue(String url) { postponedCasts.add(url); } public Queue<RouteInfo> getRouteQueue() { return routes; } public void sendTrack(String url, String artist, String title, Uri album_art) { if (mApiClient != null) { MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE); mediaMetadata.putString(MediaMetadata.KEY_ALBUM_ARTIST, artist); mediaMetadata.putString(MediaMetadata.KEY_TITLE, title); mediaMetadata.addImage(new WebImage(album_art)); MediaInfo mediaInfo = new MediaInfo.Builder(url).setContentType("audio/mpeg") .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED).setMetadata(mediaMetadata).build(); try { mRemoteMediaPlayer.load(mApiClient, mediaInfo, true) .setResultCallback(new ResultCallback<RemoteMediaPlayer.MediaChannelResult>() { @Override public void onResult(RemoteMediaPlayer.MediaChannelResult result) { if (result.getStatus().isSuccess()) { Log.d(TAG, "Media loaded successfully"); } } }); } catch (IllegalStateException e) { Log.e(TAG, "Problem occurred with media during loading", e); } catch (Exception e) { Log.e(TAG, "Problem opening media during loading", e); } } else { Log.e(TAG, "Problem with null mApiClient."); } } }