Speech to Text Using Android SDK

Speech to Text using Android APIs

You can create a simple application using the google speech engine and convert the voice to text.

Create an android project and create the following res layout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_above="@+id/textView1"
    android:layout_toLeftOf="@+id/textView1"
    android:gravity="center"
    android:orientation="vertical" >
 
    <ImageButton
        android:id="@+id/btnSpeak"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:layout_marginRight="10dp"
        android:layout_marginTop="10dp"
         />
 
    <TextView
        android:id="@+id/txtText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_marginTop="10dp"
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
</LinearLayout>

Now you can use the following activity code to add in your sample application.

package com.example.speech2text;

import java.util.ArrayList;
 
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.Menu;
import android.view.View;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
 
public class MainActivity extends Activity {
 
    protected static final int RESULT_SPEECH = 1;
 
    private ImageButton btnSpeak;
    private TextView txtText;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        txtText = (TextView) findViewById(R.id.txtText);
 
        btnSpeak = (ImageButton) findViewById(R.id.btnSpeak);
 
        btnSpeak.setOnClickListener(new View.OnClickListener() {
 
            @Override
            public void onClick(View v) {
 
                Intent intent = new Intent(
                        RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
 
                intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");
 
                try {
                    startActivityForResult(intent, RESULT_SPEECH);
                    txtText.setText("");
                } catch (ActivityNotFoundException a) {
                    Toast t = Toast.makeText(getApplicationContext(),
                            "Opps! Your device doesn't support Speech to Text",
                            Toast.LENGTH_SHORT);
                    t.show();
                }
            }
        });
 
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
 
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
 
        switch (requestCode) {
        case RESULT_SPEECH: {
            if (resultCode == RESULT_OK && null != data) {
 
                ArrayList<String> text = data
                        .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
 
                txtText.setText(text.get(0));
            }
            break;
        }
 
        }
    }
}

Using Speech Engine in Android

This post is focusing on speech engine in Android SDK. The TTS engine is very important component of the Android SDK and the Android 4.0 version has great APIs to write the custom TTS engines.

Here i am explaining a sample code to use the TTS engine in your android application.

Create the following layout in your android application.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent" >

<TextView android:id="@+id/msglabel"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Enter some text in english:"
/>
<EditText android:id="@+id/inputtext"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
/>
<Button android:id="@+id/speakenglish"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="speak in english"
/>

</LinearLayout>

Here is the code of the sample speak activity you can just copy and paste this in your application project.

package com.example.speaksample;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;

import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.view.View;
import android.widget.EditText;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.content.Intent;
import java.util.Locale;
import android.widget.Toast;

public class speaksample extends Activity implements OnClickListener, OnInitListener {
    //Create the TTS object
    private TextToSpeech TTSObject;
    //status check code
    private int DATA_CHECK_CODE = 0;
        //create the Activity
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_speaking_android);
                //get a reference to the button element listed in the XML layout
            Button speakButton = (Button)findViewById(R.id.speakenglish);
                //set the click listener
            speakButton.setOnClickListener(this);
            //check for TTS data
            Intent checkTTSIntent = new Intent();
            checkTTSIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
            startActivityForResult(checkTTSIntent, DATA_CHECK_CODE);
    }
        //respond to button clicks
    public void onClick(View v) {
            //get the text entered
            EditText inputtext = (EditText)findViewById(R.id.inputtext);
            String data = inputtext.getText().toString();
            speakInEnglish(data);
    }
        //speak the user text
    private void speakInEnglish(String speech) {
            //speak straight away
            TTSObject.speak(speech, TextToSpeech.QUEUE_FLUSH, null);
    }
        //act on result of TTS data check
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == DATA_CHECK_CODE) {
            if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
                //the user has the necessary data - create the TTS
            TTSObject = new TextToSpeech(this, this);
            }
            else {
                    //no data - install it now
                Intent installTTSIntent = new Intent();
                installTTSIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                startActivity(installTTSIntent);
            }
        }
    }
        //setup TTS
    public void onInit(int initStatus) {
            //check for successful instantiation
        if (initStatus == TextToSpeech.SUCCESS) {
            if(TTSObject.isLanguageAvailable(Locale.US)==TextToSpeech.LANG_AVAILABLE)
                TTSObject.setLanguage(Locale.US);
        }
        else if (initStatus == TextToSpeech.ERROR) {
            Toast.makeText(this, "TTS engine fails", Toast.LENGTH_LONG).show();
        }
    }
}

If you like the code please share your feedback.

Thanks

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To open a facebook page in your android application you can create the following method and call this method in a class derived from activity

This will run the facebook page of the user in a different activity window.

public static Intent getOpenFacebookIntent(Activity acty,String szUserId,String szUserName) {

           try {
               acty.getBaseContext().getPackageManager().getPackageInfo("com.facebook.katana", 0);
            return new Intent(Intent.ACTION_VIEW, Uri.parse("fb://profile/" + szUserId));
           } catch (Exception e) {
            return new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/" + szUserName));
           }
        }

If you like the code please provide your feedback.

Android Read SMS

Reading the SMS inbox from Android phone

Here is the quick way to read all the SMS stored in the inbox on android.

package com.csr.targetplus;

import java.util.List;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.database.Cursor;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.support.v4.app.NavUtils;

public class TargetPlus extends Activity {

    private static final String TAG = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView view = new TextView(this);
        Uri uriSMSURI = Uri.parse("content://sms/inbox");
        Cursor cur = getContentResolver().query(uriSMSURI, null, null, null,null);
        String sms = "";
        while (cur.moveToNext()) {
            sms += "From :" + cur.getString(2) + " : " + cur.getString(11)+"\n";         
        }
        view.setText(sms);
        setContentView(view);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_target_plus, menu);
        return true;
    }

    
}