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copied!<p>As with the release of <code>iOS7</code> you no longer need to use an external framework or library. <strong>The iOS ecosystem with AVFoundation now fully supports scanning</strong> almost every code from QR over EAN to UPC.</p> <p>Just have a look at the <a href="https://developer.apple.com/library/ios/technotes/tn2325/_index.html">Tech Note</a> and the <a href="https://developer.apple.com/library/ios/documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/00_Introduction.html">AVFoundation programming guide</a>. <a href="https://developer.apple.com/library/IOS/documentation/AVFoundation/Reference/AVMetadataMachineReadableCodeObject_Class/index.html#//apple_ref/doc/constant_group/Machine_Readable_Object_Types"><code>AVMetadataObjectTypeQRCode</code></a> is your friend.</p> <p>Here is a nice <strong>tutorial</strong> which shows it step by step: <a href="http://www.ama-dev.com/iphone-qr-code-library-ios-7/">iPhone QR code scan library iOS7</a></p> <p>Just a little example on how to set it up:</p> <pre><code>#pragma mark - #pragma mark AVFoundationScanSetup - (void) setupScanner { self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; self.input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil]; self.session = [[AVCaptureSession alloc] init]; self.output = [[AVCaptureMetadataOutput alloc] init]; [self.session addOutput:self.output]; [self.session addInput:self.input]; [self.output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()]; self.output.metadataObjectTypes = @[AVMetadataObjectTypeQRCode]; self.preview = [AVCaptureVideoPreviewLayer layerWithSession:self.session]; self.preview.videoGravity = AVLayerVideoGravityResizeAspectFill; self.preview.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); AVCaptureConnection *con = self.preview.connection; con.videoOrientation = AVCaptureVideoOrientationLandscapeLeft; [self.view.layer insertSublayer:self.preview atIndex:0]; } </code></pre>

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