Android Programming Tutorials 8 : Voice (Speech) Recognizer in Android:

Speech Reconizer:

Speech or Voice Recognizer in the name itself means that it can recognize our speech.

OutPut Of the Tutorial:

How it will work:

In this tutorial we just using some predefined services provided by Google for recognization purpose. Just click on the button and speak what ever you want.

Create Android Application:

• File >> New >> Android Application
• Enter Project name: VoiceApp
• Package: com.ambilpursunil.newapp
• Keep other default selections, click Next until you reach Finish

                       

2.Copy and past the following code in the  MainActivity.java 

packag com.ambilpursunil.newapp;

import java.util.ArrayList;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.speech.RecognitionListener;

import android.speech.RecognizerIntent;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.ListView;

    public class Voice extends Activity implements OnClickListener {

                         ListView lv;

                        static final int check = 111;

            @Override

            protected void onCreate(Bundle savedInstanceState) {

                        // TODO Auto-generated method stub

                        super.onCreate(savedInstanceState);

                        setContentView(R.layout.voice);

                        lv = (ListView) findViewById(R.id.lvVioceReturn);

                        Button b = (Button) findViewById(R.id.bVoice);

                        b.setOnClickListener(this);

            }

            @Override

            public void onClick(View v) {

                        // TODO Auto-generated method stub

Intent i = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

                        i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,

                        RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

              i.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speak On....! ");

                        startActivityForResult(i, check);

            }

            @Override

     protected void onActivityResult(int requestCode, int resultCode, Intent data) {

                        // TODO Auto-generated method stub

                        if (requestCode == check && requestCode == RESULT_OK) {
ArrayList<String> result = data                    .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

                        lv.setAdapter(new ArrayAdapter<String>(this,

                        android.R.layout.simple_list_item_1, result));

                        }

                        super.onActivityResult(requestCode, resultCode, data);

            }

   }

2.Make the change the of  activity_main.xml  file as the below

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <Button

        android:id="@+id/bVoice"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Button" />

    <ListView

        android:id="@+id/lvVioceReturn"

        android:layout_width="match_parent"

        android:layout_height="fill_parent" >

    </ListView>

</LinearLayout>

3.Copy and past the code for  manifest.xml  file

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.ambilpursunil.newapp"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="17" />

    <application

        android:allowBackup="true" 

        android:icon="@drawable/ic_launcher" 

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

    <activity 

       android:name="com.ambilpursunil.newapp.Voice"

       android:configChanges="keyboard|keyboardHidden|orientation" >

   <intent-filter>

        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />

  </intent-filter>

       </activity>

  </application>

</manifest>

4.Right click on the project and Run As-->Android Application

Just click on the button and speak...

Please Send Your Comments To ambilpura.sunil@gmail.com

Stay Tune For Next Tutorial... TextVoice in Android: