how to get the scanned result from inbuilt scanner

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
                if (requestCode==0){
            if (result != null) {
                if (result.getContents() == null) {
                    Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
                } else {
                    String scannedValue = result.getContents();
                    parentFirstBarCode.setText(scannedValue);
                    String scannedValueLength = String.valueOf(scannedValue.length());
                    Toast.makeText(getApplicationContext(), "Length of the scanned code:" + scannedValueLength, Toast.LENGTH_SHORT).show();
                    operationsAfterScan(scannedValue);
                }
            } else {
                // This is important, otherwise the result will not be passed to the fragment
                super.onActivityResult(requestCode, resultCode, data);
            }
        }
        if (requestCode==1){
            if (result != null) {
                if (result.getContents() == null) {
                    Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
                } else {
                    String scannedValue = result.getContents();
                    parentSecondBarCode.setText(scannedValue);
                    String scannedValueLength = String.valueOf(scannedValue.length());
                    Toast.makeText(getApplicationContext(), "Length of the scanned code:" + scannedValueLength, Toast.LENGTH_SHORT).show();
                    operationsAfterScan(scannedValue);
                }
            } else {
                // This is important, otherwise the result will not be passed to the fragment
                super.onActivityResult(requestCode, resultCode, data);
            }
        }
    }