// Create a BroadcastReceiver for ACTION_FOUND, ACTION_STATE_CHANGED, ACTION_DISCOVERY_FINISHED
    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (ScannerService.ACTION_SELECT_SCANNER.equals(action)) {
                //display a list of scanners to the user
                String[] deviceArray = intent.getStringArrayExtra("scannerArray");
                if(deviceArray == null) {
                    //show "no scanners found" dialog
                    Log.i(LOG_TAG, "no scanners found");
                } else {
                    Log.i(LOG_TAG, "intent contents: " + deviceArray.toString());
                    Bundle b = new Bundle();
                    b.putStringArray("deviceListArray", deviceArray);
                    removeDialog(DIALOG_BT_LIST);
                    showDialog(DIALOG_BT_LIST, b);
                }
            }
            if (ScannerService.ACTION_READ_SCANNER.equals(action)) {
                String extra = intent.getStringExtra("scannerRead");
                Log.i(LOG_TAG, "read message: " + extra);
                TextView newTextView = new TextView(context);
                newTextView.setText(extra+"\n");
                mRootView.addView(newTextView);
            }
            if(ScannerService.ACTION_REQUEST_RECONNECT.equals(action)) {
                //ask the user real nice if they want the bluetooth scanner reconnected after a disconnect
                Log.i(LOG_TAG, "requested reconnect!");
                TextView newTextView = new TextView(context);
                newTextView.setText("reconnection request from service, connection to scanner lost");
                mRootView.addView(newTextView);
                Intent reconnectIntent = new Intent();
                reconnectIntent.setAction(ScannerService.ACTION_RECONNECT);
                sendBroadcast(reconnectIntent);
            }
        }
    };

//in onResume:
@Override
    public void onResume() {
        super.onResume();
        IntentFilter filter = new IntentFilter();
        filter.addAction(ScannerService.ACTION_SELECT_SCANNER);
        filter.addAction(ScannerService.ACTION_READ_SCANNER);
        filter.addAction(ScannerService.ACTION_REQUEST_RECONNECT);
        registerReceiver(mReceiver, filter); // Don't forget to unregister during onDestroy
    }

//onPause
@Override
    public void onPause() {
        super.onPause();
        unregisterReceiver(mReceiver);
    }