Android Geek: Capture Speech/Voice Input for Google Glass

This tutorial will walk you through the steps and code snippets for capturing user speech/voice input in your GDK based Glassware.

Step 1:

Create an Android project as shown below. If you haven’t tried installing any sample Glassware on your Google Glass, please visit this tutorial.

Create an Android Project

Step 2:

Create an Android Activity and edit the AndroidManifest.xml as shown below:

<activity
android:name=”com.example.capturespeechinput.MainActivity”
android:label=”@string/app_name” >
<intent-filter>
<action android:name=”android.intent.action.MAIN” />
<action android:name=”com.google.android.glass.action.VOICE_TRIGGER” />

<category android:name=”android.intent.category.LAUNCHER” />
</intent-filter>

<meta-data
android:name=”com.google.android.glass.VoiceTrigger”
android:resource=”@xml/voice_trigger_start” />
</activity>

Step 3:

Now, create a folder called xml under res and create an xml file called voice_trigger_start.xml.

Paste the following content inside:

<?xml version=”1.0″ encoding=”utf-8″?>

<trigger keyword=”Capture Speech” >
<input prompt=”Speak now!” />
</trigger>

Step 4:

Edit the activity_main.xml (Your activity’s layout page) to include a TextView with the id – ‘capturedSpeechToText’ as follows:

<TextView

android:id=”@+id/capturedSpeechToText”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:text=”" />

Step 5:

Edit your MainActivity Java Class to include the following code snippet to captured the spoken text in the onCreate() method:

ArrayList<String> voiceResults = getIntent().getExtras().getStringArrayList(RecognizerIntent.EXTRA_RESULTS);
if (voiceResults != null && voiceResults.size() > 0) {
String spokenText = voiceResults.get(0);

TextView capturedSpeechToTextViewObj = ((TextView) findViewById(R.id.capturedSpeechToText));
capturedSpeechToTextViewObj.setText(spokenText);
}

Step 6:

Now, build and deploy the Android application on to your Google Glass and enjoy the output: