Android - รบกวนสอบถามเรื่องวิธีการเรียกใช้ library QR code ของ zxing-2.2 การ add เข้ามาใช้งานค่ะ

 package com.testqrcode;

import com.google.zxing.client.android.CaptureActivity;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class TestQRCodeActivity extends Activity {
/** Called when the activity is first created. */
Button b1;

@Override
public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.main);
	b1 = (Button) findViewById(R.id.submit);
	b1.setOnClickListener(new OnClickListener() {

		public void onClick(View arg0) {
			// TODO Auto-generated method stub
			Intent intent = new Intent(TestQRCodeActivity.this,
			CaptureActivity.class);
			// Intent intent = new
			// Intent("com.google.zxing.client.android.SCAN");
			intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
			startActivityForResult(intent, 0);
		}
	});

}

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
	if (requestCode == 0) {
		if (resultCode == 1) {
			// Handle successful scan
			String capturedQrValue = intent.getStringExtra("RESULT");
			//String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
			Toast.makeText(TestQRCodeActivity.this,
			"Scan Result:" + capturedQrValue, Toast.LENGTH_SHORT)
			.show();

			} else if (resultCode == RESULT_CANCELED) {
			// Handle cancel
			}
		} else {

		}
	}
}