[android-developers] barcode scanner not launching

im having a little trouble with my app

i want the barcode scanner to open on the click of a button(scan1),
scan barcode, and return details to a edittext (barcode1).

here is what i have so far......

package com.android.app;

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

public class Scanner extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scanner);}

public Button.OnClickListener scan1 = new
Button.OnClickListener() {
public void onClick(View v) {
Intent intent = new
Intent("com.google.zxing.client.android.SCAN");
intent.setPackage("com.google.zxing.client.android");
intent.putExtra("SCAN_MODE", "PRODUCT_MODE");
startActivityForResult(intent, 0);
}
};

public void onActivityResult(int requestCode, int resultCode,
Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents =
intent.getStringExtra("SCAN_RESULT");
// Handle successful scan
EditText editComment =
(EditText)findViewById(R.id.barcode1);
editComment.setText(contents);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
}

}

this is my manifest entry......

<activity android:name=".Scanner" android:label="@string/app_name" >
<intent-filter>
<action android:name="com.google.zxing.client.android.SCAN"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>

any help would be great

many thanks

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