Hey Guys,

Trying to convert image to nsdata, but receive nil. Tried both PNG and JPEG.

let qrc = QRCode("sample")
let img = UIImagePNGRepresentation(qrc.image!) // img is nil 

Please advice

I received this error when i try to install this library with cathage.

In cartfile: github "aschuch/QRCode"

Error: *** Building scheme "QRCode" in Example.xcodeproj ** BUILD FAILED **

The following build commands failed: CompileSwift normal x86_64 /project-path/Carthage/Checkouts/QRCode/QRCode/CIColorExtension.swift CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler (2 failures)

I've upgraded the project to work with Swift 4.2, I have also checked the different targets and all of them compiled successfully with no warnings.

Issue #59 - Swift 4.2 support.

Hi,

this library is awesome, but it didn't work out of the box with Xcode 7.0 beta and the new Swift 2.0 syntax. So I converted the syntax and the project, to comply with Xcode 7.0.

Maybe you could leave the swift-2.0 branch, so that Xcode 7.0 users can use the following line in their Podfile:

pod 'QRCode', :git => 'https://github.com/aschuch/QRCode', :branch => 'swift-2.0'

Thanks, Marc

Is there a specific reason why the initialisers for string and NSURL both encode the input as latin1 instead of UTF-8?

public init?(_ string: String) {
        if let data = string.dataUsingEncoding(NSISOLatin1StringEncoding) {
            self.data = data
        } else {
            return nil
        }
    }

public init?(_ url: NSURL) {
    if let data = url.absoluteString.dataUsingEncoding(NSISOLatin1StringEncoding) {
        self.data = data
    } else {
        return nil
    }
}

I placed the high error correction in and the code still appears blurry.

    var qrImage = UIImageView(frame: CGRectMake((lpScroll.frame.size.width - qrWidth) / 2, ish, qrWidth, qrWidth))
    let url = NSURL(string: url4Sharing)
    var qrCode = QRCode(url!)
    qrCode?.errorCorrection = QRCode.ErrorCorrection.High
    qrCode?.color = CIColor(color: UIColor.cloudsColor())
    qrCode?.backgroundColor = CIColor(color: darkColor)
    qrCode?.size = CGSize(width: qrWidth * 2, height: qrWidth * 2)
    qrImage.image = qrCode?.image
    lpScroll.addSubview(qrImage)

To build for Swift 3.0 for the time being you need to add this to your Podfile

`pod 'QRCode', :git => "[email protected]:aschuch/QRCode.git", :branch => "swift3.0"`

I encountered a problem that the result QRCode image is blurred. So this commit simply capture the image with device scale solved that problem, and has no effect to other usages.

i think using extension to invoke have a better experience. like: stringA.QRImage() this method could have some default parameters,like size or something else.

if you agree with this , I can spend some time work on it,create a pull request

The created image gets streched even when using UIViewContentModeScaleAspectFit on a UIImageView.

Fixed it by adding another conversion step (CIImage -> CGImage -> UIImage). https://github.com/Querschlag/QRCode/commit/f603d590bda07ac81f9e3cdd09ebef6d53853e41

Update: This also fixes image preview in the debugger.

This gets the code compiling on current Xcode. A lot of the affected changes are optional <-> non-optional.

This won't be compatible with older versions; for that such changes will need to be guarded with "if foo is Bar?" and the like.