How to create barcode scanner (Android)?

Question

Can someone tell me if creating barcode scanner app (for Android) is difficult? Is OpenCV library good start? Where can I find algorithm which clearly explains how to read barco

Answer 1

Zebra Crossing is the best documented java 1D or 2D barcode decoder or encoder around. Lots of people use it, and it's become the de facto standard for android. There's a healthy buzz about it on here too.

RedLaser has an api, but you'll have to pay if you use it in production. When I tried it out, I didn't find it to be a spectacular improvement over Zebra Crossing. Certainly not for the price.

jjil does barcodes but there are only 3 committers on the project, and I've never used it myself so I don't know what to tell you about it. Its source is certainly readable.

Once you start reading, you'll find readers are tricky things to implement due to blurry images, noise, distortion, weird angles, and so forth. So if you want something reliable, you probably want to go with a community-maintained library.