Qr code Scanner in android | Bar code Scanner in Android

Hello Friends,

Today i am share Qr Scanner/Bar code Scanner with android application.

there is many library available in Market for Scan Qr code , Out of then ZbarScanner is work as charm.

here it will give two option for scan. one for Qr code and second for bar code or else..

import net.sourceforge.zbar.Symbol;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Toast;
import com.dm.zbar.android.scanner.ZBarConstants;
import com.dm.zbar.android.scanner.ZBarScannerActivity;


public class MainActivity extends Activity 
{

    private static final int ZBAR_SCANNER_REQUEST = 0;
    private static final int ZBAR_QR_SCANNER_REQUEST = 1;

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    public void launchScanner(View v) 
    {
        if (isCameraAvailable()) 
        {
            Intent intent = new Intent(this, ZBarScannerActivity.class);
            startActivityForResult(intent, ZBAR_SCANNER_REQUEST);
        }
        else 
        {
            Toast.makeText(this, "Rear Facing Camera Unavailable", Toast.LENGTH_SHORT).show();
        }
    }

    public void launchQRScanner(View v) 
    {
        if (isCameraAvailable()) 
        {
            Intent intent = new Intent(this, ZBarScannerActivity.class);
            intent.putExtra(ZBarConstants.SCAN_MODES, new int[]{Symbol.QRCODE});
            startActivityForResult(intent, ZBAR_SCANNER_REQUEST);
        } 
        else 
        {
            Toast.makeText(this, "Rear Facing Camera Unavailable", Toast.LENGTH_SHORT).show();
        }
    }

    public boolean isCameraAvailable()
    {
        PackageManager pm = getPackageManager();
        return pm.hasSystemFeature(PackageManager.FEATURE_CAMERA);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    {
        switch (requestCode) 
        {
            case ZBAR_SCANNER_REQUEST:
            case ZBAR_QR_SCANNER_REQUEST:
             
                if (resultCode == RESULT_OK) 
                {
                    Toast.makeText(this, "Scan Result = " + data.getStringExtra(ZBarConstants.SCAN_RESULT), Toast.LENGTH_SHORT).show();
                } 
                else if(resultCode == RESULT_CANCELED && data != null)
                {
                    String error = data.getStringExtra(ZBarConstants.ERROR_INFO);
                    if(!TextUtils.isEmpty(error)) 
                    {
                        Toast.makeText(this, error, Toast.LENGTH_SHORT).show();
                    }
                }
                break;
        }
    }
}

Download full source code from here ZbarScannerSampleCode