The current version that Cocopods shows is 0.0.1. The link gives a 404.

fillColor not work in +[UIImage (MDQRCode) mdDrawQRCode:context:size:fillColor:]due to mismatch of color spaces.

For example, [UIImage mdQRCodeForString:@"Hello, world!" size:imageView.bounds.size.width fillColor:[UIColor redColor]]; returns a transparent image.

This line CGContextSetFillColor(ctx, CGColorGetComponents(fillColor.CGColor)); causes this issue. Replacing this line with CGContextSetFillColorWithColor(ctx, fillColor.CGColor); will fix it.

GPL code is in conflict with the AppStore ToS and is not allowed in the store.
Also, most people probably don't feel like open sourcing their app.

Some reading material:
http://www.zdnet.com/blog/open-source/no-gpl-apps-for-apples-app-store/8046
http://www.fsf.org/blogs/licensing/more-about-the-app-store-gpl-enforcement (esp. important)

I’ve recently added iOS-QR-Code-Encoder to the CocoaPods package manager repo.

CocoaPods is a tool for managing dependencies for OS X and iOS Xcode projects and provides a central repository for iOS/OS X libraries. This makes adding libraries to a project and updating them extremely easy and it will help users to resolve dependencies of the libraries they use.

However, iOS-QR-Code-Encoder doesn't have any version tags. I’ve added the current HEAD as version 0.0.1, but a version tag will make dependency resolution much easier.

Semantic version tags (instead of plain commit hashes/revisions) allow for resolution of cross-dependencies.

In case you didn’t know this yet; you can tag the current HEAD as, for instance, version 1.0.0, like so:

$ git tag -a 1.0.0 -m "Tag release 1.0.0"
$ git push --tags

The QR image is blurry ,how to resolve it ?