Friday, August 23, 2013

Android Voice Recognition Example

Manchu Bhargavi 4:46 AM , , , , No comments :
Hi,
This post about how to search voice based search places instead typing the text.

 Call Voice recognition 

 Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Tell me what you want");


Retrun Result Method

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if(requestCode == REQUEST_RECOGNIZE && resultCode == Activity.RESULT_OK) {
            ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
            StringBuilder sb = new StringBuilder();
            for(String piece : matches) {
                sb.append(piece);
                sb.append('\n');
            }
            if(matches.size() !=0){
            for(int i = 0; i<matches.size(); i++){
              text.setText("**********Single Values************ /n"+matches.get(0));
            }
            }
           
        } else {
            Toast.makeText(this, "Operation Canceled", Toast.LENGTH_SHORT).show();
        }

    }


Full Source Code

import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
    private static final int REQUEST_RECOGNIZE = 100;
    TextView text;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        text = new TextView(this);
        setContentView(text);
        
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Tell me what you want");
        try {
            startActivityForResult(intent, REQUEST_RECOGNIZE);
        } catch (ActivityNotFoundException e) {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Not Available");
            builder.setMessage("No recognition software installed.Download ?");
            builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Intent marketIntent = new Intent(Intent.ACTION_VIEW);
                    marketIntent.setData(Uri.parse("https://play.google.com/store/apps/details?id=com.google.android.voicesearch"));
                }
            });
            builder.setNegativeButton("No", null);
            builder.create().show();
        }
    }

    /**
     * Handle the results from the voice recognition activity.
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if(requestCode == REQUEST_RECOGNIZE && resultCode == Activity.RESULT_OK) {
            ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
            StringBuilder sb = new StringBuilder();
            for(String piece : matches) {
                sb.append(piece);
                sb.append('\n');
            }
            if(matches.size() !=0){
            for(int i = 0; i<matches.size(); i++){
            text.setText("**********Single Values************ /n"+matches.get(0));
            }
            }
           
        } else {
            Toast.makeText(this, "Operation Canceled", Toast.LENGTH_SHORT).show();
        }
    }
}






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