Use Voice Search in Android Studio

Let us see the steps on how to perform this task in android .Create new project with a valid name, once everything ready our projects looks like below screen.



App->res->layout->activity_main.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >
    <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingBottom="4dip" android:text="Click the button and start speaking" />
    <EditText android:id="@+id/editText1" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" >
        <requestFocus/>
    </EditText>
    <Button android:id="@+id/speakButton" android:layout_width="fill_parent" android:onClick="speakButtonClicked" android:layout_height="wrap_content" android:text="Click Me!" />
</LinearLayout>

app->java->com.example.pavithra.voicesearch->MainActivity.java

package com.example.pavithra.voicesearch;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.speech.RecognizerIntent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity
{
    EditText ed;
    TextView tv;
    private static final int REQUEST_CODE = 1234;
    Button speak;@
    Override
    protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            final Button speak = (Button) findViewById(R.id.speakButton);
            ed = (EditText) this.findViewById(R.id.editText1);
            tv = (TextView) this.findViewById(R.id.textView1);
            // Disable button if no recognition service is present
            PackageManager pm = getPackageManager();
            List < ResolveInfo > activities = pm.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
            if (activities.size() == 0)
            {
                speak.setEnabled(false);
                speak.setText("Recognizer not present");
            }
            ed.addTextChangedListener(new TextWatcher()
            {@
                Override
                public void beforeTextChanged(CharSequence s, int start, int count, int after)
                {
                    // TODO Auto-generated method stub
                }@
                Override
                public void onTextChanged(CharSequence s, int start, int before, int count)
                {
                    // TODO Auto-generated method stub
                }@
                Override
                public void afterTextChanged(Editable s)
                {
                    // TODO Auto-generated method stub
                    speak.setEnabled(false);
                }
            });
        }
        /**
         * Handle the action of the button being clicked
         */
    public void speakButtonClicked(View v)
        {
            startVoiceRecognitionActivity();
        }
        /**
         * Fire an intent to start the voice recognition activity.
         */
    private void startVoiceRecognitionActivity()
        {
            Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
            intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
            intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Voice searching...");
            startActivityForResult(intent, REQUEST_CODE);
        }
        /**
         * Handle the results from the voice recognition activity.
         */
        @
    Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        if (requestCode == REQUEST_CODE && resultCode == RESULT_OK)
        {
            // Populate the wordsList with the String values the recognition engine thought it heard
            final ArrayList < String > matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
            if (!matches.isEmpty())
            {
                String Query = matches.get(0);
                ed.setText(Query);
                speak.setEnabled(false);
            }
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
}

Now Run the Application by pressing Shift+F10 and see the output as show like below