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Bar code and QR code generator and scanner built in Swift

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satyadevchauhan/CodeGeneratorAndScanner

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How to generate Bar code or QR code on iOS using native iOS APIs?

Using the CoreImage framework, one can easily generate Bar/QR Codes within an iOS app with very few lines of code. Using the CoreImage filter, specifically the 'CICode128BarcodeGenerator' for Bar code and ‘CIQRCodeGenerator‘ for QR Code filter, we can get a CIImage that can be convert to UIImage for usage. Please visitCore Image Filter Reference for more information.

Following are supportedCICategoryGenerator:

Bar Code Example

func generateBarCode(_ string:String)->UIImage{if !string.isEmpty{letdata= string.data(using:String.Encoding.ascii)letfilter=CIFilter(name:"CICode128BarcodeGenerator")            // Check the KVC for the selected code generator            filter.setValue(data, forKey:"inputMessage")lettransform=CGAffineTransform(scaleX:10, y:10)letoutput= filter.outputImage?.transformed(by: transform)returnUIImage(ciImage: output!)}else{returnUIImage()}}

QR Code Example

func generateQRCode(_ string:String)->UIImage{if !string.isEmpty{letdata= string.data(using:String.Encoding.ascii)letfilter=CIFilter(name:"CIQRCodeGenerator")            // Check the KVC for the selected code generator            filter.setValue(data, forKey:"inputMessage")lettransform=CGAffineTransform(scaleX:10, y:10)letoutput= filter.outputImage?.transformed(by: transform)returnUIImage(ciImage: output!)}else{returnUIImage()}}

How to scan Bar code or QR code on iOS using native iOS APIs?

Using AVFoundation framework we can scan all kinds of market leading bar code formats. Please visitAVMetadataObject.ObjectType for all supported formats on iOS.

Following are supported scanning formats:

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