zxing onActivityResults not firing

[sauyeed]

I'm trying to pull data from a QR code via zxing using the following code (basically copypasted from a tutorial, with names changed to protect the innocent):\[code\] //Check for Barcode scanner, if not found put up an alert that allows user to install it. PackageManager pm = getPackageManager(); try { ApplicationInfo appInfo = pm.getApplicationInfo("com.google.zxing.client.android", 0); Intent intent = new Intent( "com.google.zxing.client.android.SCAN"); intent.putExtra("SCAN_MODE", "QR_CODE_MODE");//for Qr code, its "QR_CODE_MODE" instead of "PRODUCT_MODE" intent.putExtra("SAVE_HISTORY", false);//this stops saving ur barcode in barcode scanner app's history startActivityForResult(intent, 0); } catch (NameNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); new AlertDialog.Builder(BitcoinAddressUtilityActivity.this) .setTitle("WARNING:") .setMessage("You don't have Barcode Scanner installed. Please install it.") .setCancelable(false) .setNeutralButton("Install it now", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { Uri uri = Uri.parse("market://search?q=pname:com.google.zxing.client.android"); startActivity(new Intent(Intent.ACTION_VIEW, uri)); } }) .show(); } } public void onActivityResult(int requestCode, int resultCode, Intent intent) { if (requestCode == 0) { if (resultCode == RESULT_OK) { String contents = intent.getStringExtra("SCAN_RESULT"); String format = intent.getStringExtra("SCAN_RESULT_FORMAT"); // Handle successful scan EditText passphrase = (EditText) findViewById(R.id.txtPassphrase); passphrase.setText(contents); } else if (resultCode == RESULT_CANCELED) { // Handle cancel } } } });\[/code\]It executes just fine without errors, but onActivityResults never fires, I even get a warning:\[code\]The method onActivityResult(int, int, Intent) from the type new View.OnClickListener(){} is never used locally\[/code\]I'll fully admit that I'm an activity/intent noob, so if someone wants to answer in the form of a tutorial I'll gladly accept that - I don't just want a code fix, I want to know why it's not working in the first place.