mirror of https://github.com/tasks/tasks
Remove voice input assistant
Alex Baker
8 years ago
parent
559619eadd
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5f7e6c109c
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/**
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* Copyright (c) 2012 Todoroo Inc
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*
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* See the file "LICENSE" for the full license governing this code.
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*/
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package com.todoroo.astrid.voice;
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import android.support.v4.app.Fragment;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.speech.RecognizerIntent;
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import com.todoroo.andlib.data.Callback;
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import com.todoroo.astrid.activity.TaskListFragment;
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import java.util.ArrayList;
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import java.util.List;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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/**
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* This class handles taking voice-input and appends the text to the registered EditText-instance.
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* You can have multiple VoiceInputAssistants per Fragment, just use the additional constructor
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* to specify unique requestCodes for the RecognizerIntent (e.g. VoiceInputAssistant.VOICE_RECOGNITION_REQUEST_CODE+i).
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* If you have only one VoiceInputAssitant on an Fragment, just use the normal constructor.
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* <p>
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* You can query voiceinput-capabilities by calling isVoiceInputAvailable() for external checking,
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* but the visibility for the microphone-button specified by the constructor is handled in configureMicrophoneButton(int).
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*
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* @author Arne Jans
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*/
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@Singleton
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public class VoiceInputAssistant {
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/** requestcode for activityresult from voicerecognizer-intent */
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/**
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* Call this to see if your phone supports voiceinput in its current configuration.
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* If this method returns false, it could also mean that Google Voicesearch is simply
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* not installed.
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* If this method returns true, internal use of it enables the registered microphone-button.
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*
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* @return whether this phone supports voiceinput
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*/
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public static boolean voiceInputAvailable(Context context) {
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PackageManager pm = context.getPackageManager();
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List<ResolveInfo> activities = pm.queryIntentActivities(
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new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
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return (activities.size() != 0);
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}
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/**
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* This requestcode is used to differentiate between multiple microphone-buttons on a single fragment.
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* Use the mightier constructor to specify your own requestCode in this case for every additional use on an fragment.
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* If you only use one microphone-button on an fragment, you can leave it to its default, VOICE_RECOGNITION_REQUEST_CODE.
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*/
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private final Fragment fragment;
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/**
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* This constructor can be called from a widget with a voice-button calling a dummy-activity.
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*
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*/
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@Inject
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public VoiceInputAssistant(Fragment fragment) {
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this.fragment = fragment;
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}
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/**
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* Fire an intent to start the speech recognition activity.
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* This is fired by the listener on the microphone-button.
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*
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* @param prompt Specify the R.string.string_id resource for the prompt-text during voice-recognition here
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*/
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public void startVoiceRecognitionActivity(int prompt) {
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Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
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intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
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intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1);
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intent.putExtra(RecognizerIntent.EXTRA_PROMPT, fragment.getString(prompt));
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fragment.startActivityForResult(intent, TaskListFragment.VOICE_RECOGNITION_REQUEST_CODE);
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}
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/**
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* This callback-method has to be called from Fragment.onActivityResult within your fragment
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* with parameters directly on passthru.<br>
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* You can check in your fragment if it was really a RecognizerIntent that was handled here,
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* if so, this method returns true. In this case, you should call super.onActivityResult in your
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* fragment.onActivityResult.
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* <p>
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* If this method returns false, then it wasnt a request with a RecognizerIntent, so you can handle
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* these other requests as you need.
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*
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*/
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public void handleActivityResult(Intent data, Callback<String> onVoiceRecognition) {
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// handle the result of voice recognition, put it into the textfield
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// this was handled here, even if voicerecognition fails for any reason
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// so your program flow wont get chaotic if you dont explicitly state
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// your own requestCodes.
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// Fill the quickAddBox-view with the string the recognizer thought it could have heard
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ArrayList<String> match = data.getStringArrayListExtra(
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RecognizerIntent.EXTRA_RESULTS);
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// make sure we only do this if there is SomeThing (tm) returned
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if (match != null && match.size() > 0 && match.get(0).length() > 0) {
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String recognizedSpeech = match.get(0);
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recognizedSpeech = recognizedSpeech.substring(0, 1).toUpperCase() +
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recognizedSpeech.substring(1).toLowerCase();
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onVoiceRecognition.apply(recognizedSpeech);
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}
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}
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}
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