java - Zxing via intent

Question

In my application I use the zxing library. I start de zxing barcodescanner via intent. But when the user has no barcodescanner installed. The application stops working. How can I check if a zxing barcodescanner is already installed?

Answer 1

There's a page on the zxing wiki that explicitly mentions this case:

How to scan a barcode from another Android application via Intents

The best way to integrate is to use the small library of code we have provided. It correctly handles for you many details, such as setting category, flags, picking the most appropriate app, and most importantly handling the case where Barcode Scanner is not installed.