alexa android

This project is directly clone from https://github.com/willblaschko/AlexaAndroid # Alexa Voice Library ======= *A library and sample app to abstract access to the Amazon Alexa service for Android applications.* First and foremost, my goal with this project is to help others who have less of an understanding of Java, Android, or both, to be able to quickly and easily integrate the Amazon Alexa platform into their own applications. For getting started with the Amazon Alexa platform, take a look over here: https://developer.amazon.com/appsandservices/solutions/alexa/alexa-voice-service/getting-started-with-the-alexa-voice-service Library updated with functionality for the Alexa [v20160207 API version](https://developer.amazon.com/public/solutions/alexa/alexa-voice-service/content/avs-api-overview). ## Applications ### Sample Application Curious about what the library can do? A quick example of the three main functions (live recorded audio events, text-to-speech intents, prerecorded audio intents), plus sample code can be found in the [sample app](https://play.google.com/store/apps/details?id=com.willblaschko.android.alexavoicelibrary) #### Compiling and running the sample application * Follow the process for creating a connected device detailed at the Amazon link at the top of the Readme. * Add your api_key.txt file (part of the Amazon process) to the app/src/main/assets folder * Change [PRODUCT_ID](https://github.com/willblaschko/AlexaAndroid/blob/master/app/src/main/java/com/willblaschko/android/alexavoicelibrary/global/Constants.java#L8) to the value for my Alexa application that you configured for "Application Type Id" above. * Build and run the sample app using Gradle from the command line or Android Studio! ### Production Application Or see what the library can do when converted into a full package, complete with optional always-on listener: [Alexa Listens](https://play.google.com/store/apps/details?id=com.willblaschko.android.alexalistens) ## Using the Library Most of the library can be accessed through the [AlexaManager](http://willblaschko.github.io/AlexaAndroid/com/willblaschko/android/alexa/AlexaManager.html) and [AlexaAudioPlayer](http://willblaschko.github.io/AlexaAndroid/com/willblaschko/android/alexa/avs/AlexaAudioPlayer.html) classes, both of which are singletons. ### Installation * Ensure you're pulling from jcenter() for your project (project-level build.gradle): ```java buildscript { repositories { jcenter() } ... } allprojects { repositories { jcenter() } } ``` * Add the library to your imports (application-level build.gradle): ```java compile 'com.willblaschko.android.alexa:AlexaAndroid:2.4.2' ``` * Follow the process for creating a connected device detailed in the Amazon link at the top of the Readme. * Follow the instructions for adding your key and preparing the Login with Amazon activity from the ['Login with Amazon' Android Project guide](https://developer.amazon.com/public/apis/engage/login-with-amazon/docs/create_android_project.html) * Add your api_key.txt file (part of the Login with Amazon process detailed in the link above) to the app/src/main/assets folder. * Start integration and testing! ### Library Instantiation and Basic Return Parsing ```java private AlexaManager alexaManager; private AlexaAudioPlayer audioPlayer; private List<AvsItem> avsQueue = new ArrayList<>(); private void initAlexaAndroid(){ //get our AlexaManager instance for convenience alexaManager = AlexaManager.getInstance(this, PRODUCT_ID); //instantiate our audio player audioPlayer = AlexaAudioPlayer.getInstance(this); //Callback to be able to remove the current item and check queue once we've finished playing an item audioPlayer.addCallback(alexaAudioPlayerCallback); } //Our callback that deals with removing played items in our media player and then checking to see if more items exist private AlexaAudioPlayer.Callback alexaAudioPlayerCallback = new AlexaAudioPlayer.Callback() { @Override public void playerPrepared(AvsItem pendingItem) { } @Override public void itemComplete(AvsItem completedItem) { avsQueue.remove(completedItem); checkQueue(); } @Override public boolean playerError(int what, int extra) { return false; } @Override public void dataError(Exception e) { } }; //async callback for commands sent to Alexa Voice private AsyncCallback<AvsResponse, Exception> requestCallback = new AsyncCallback<AvsResponse, Exception>() { @Override public void start() { //your on start code } @Override public void success(AvsResponse result) { Log.i(TAG, "Voice Success"); handleResponse(result); } @Override public void failure(Exception error) { //your on error code } @Override public void complete() { //your on complete code } }; /** * Handle the response sent back from Alexa's parsing of the Intent, these can be any of the AvsItem types (play, speak, stop, clear, listen) * @param response a List<AvsItem> returned from the mAlexaManager.sendTextRequest() call in sendVoiceToAlexa() */ private void handleResponse(AvsResponse response){ if(response != null){ //if we have a clear queue item in the list, we need to clear the current queue before proceeding //iterate backwards to avoid changing our array positions and getting all the nasty errors that come //from doing that for(int i = response.size() - 1; i >= 0; i--){ if(response.get(i) instanceof AvsReplaceAllItem || response.get(i) instanceof AvsReplaceEnqueuedItem){ //clear our queue avsQueue.clear(); //remove item response.remove(i); } } avsQueue.addAll(response); } checkQueue(); } /** * Check our current queue of items, and if we have more to parse (once we've reached a play or listen callback) then proceed to the * next item in our list. * * We're handling the AvsReplaceAllItem in handleResponse() because it needs to clear everything currently in the queue, before * the new items are added to the list, it should have no function here. */ private void checkQueue() { //if we're out of things, hang up the phone and move on if (avsQueue.size() == 0) { return; } AvsItem current = avsQueue.get(0); if (current instanceof AvsPlayRemoteItem) { //play a URL if (!audioPlayer.isPlaying()) { audioPlayer.playItem((AvsPlayRemoteItem) current); } } else if (current instanceof AvsPlayContentItem) { //play a URL if (!audioPlayer.isPlaying()) { audioPlayer.playItem((AvsPlayContentItem) current); } } else if (current instanceof AvsSpeakItem) { //play a sound file if (!audioPlayer.isPlaying()) { audioPlayer.playItem((AvsSpeakItem) current); } } else if (current instanceof AvsStopItem) { //stop our play audioPlayer.stop(); avsQueue.remove(current); } else if (current instanceof AvsReplaceAllItem) { audioPlayer.stop(); avsQueue.remove(current); } else if (current instanceof AvsReplaceEnqueuedItem) { avsQueue.remove(current); } else if (current instanceof AvsExpectSpeechItem) { //listen for user input audioPlayer.stop(); startListening(); } else if (current instanceof AvsSetVolumeItem) { setVolume(((AvsSetVolumeItem) current).getVolume()); avsQueue.remove(current); } else if(current instanceof AvsAdjustVolumeItem){ adjustVolume(((AvsAdjustVolumeItem) current).getAdjustment()); avsQueue.remove(current); } else if(current instanceof AvsSetMuteItem){ setMute(((AvsSetMuteItem) current).isMute()); avsQueue.remove(current); }else if(current instanceof AvsMediaPlayCommandItem){ //fake a hardware "play" press sendMediaButton(this, KeyEvent.KEYCODE_MEDIA_PLAY); }else if(current instanceof AvsMediaPauseCommandItem){ //fake a hardware "pause" press sendMediaButton(this, KeyEvent.KEYCODE_MEDIA_P