How to scan PDF 417 barcode using zxing app in android?

How to scan a PDF417 barcode? Do I need to be disposed of? (Note: the Zxing barcode application is already installed on my device). Please help me. Here is my code for using Zxing barcode scanner from my application using Intent

 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, MY_ACTIVITY_CONSTANT);