Last active
August 29, 2015 14:26
-
-
Save madcato/44956d5fda158a4e9aee to your computer and use it in GitHub Desktop.
Capture a QR with iPhone camera.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// | |
// QRCaptureViewController.swift | |
// ScanQR | |
// | |
// Created by Daniel Vela on 06/08/15. | |
// Copyright (c) 2015 veladan. All rights reserved. | |
// | |
import UIKit | |
import AVFoundation | |
class QRCaptureViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate { | |
var captureSession: AVCaptureSession? | |
var videoPreviewLayer: AVCaptureVideoPreviewLayer? | |
// View port to display the video capture preview | |
@IBOutlet weak var viewPreview: UIView! | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
// Do any additional setup after loading the view, typically from a nib. | |
} | |
override func viewDidAppear(animated: Bool) { | |
super.viewDidAppear(animated) | |
self.startReading() | |
} | |
override func didReceiveMemoryWarning() { | |
super.didReceiveMemoryWarning() | |
// Dispose of any resources that can be recreated. | |
} | |
func startReading() -> Bool { | |
var error: NSError? | |
var captureDevice = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo) | |
var input: AVCaptureInput = AVCaptureDeviceInput.deviceInputWithDevice(captureDevice, error: &error) as! AVCaptureInput | |
if let error = error { | |
NSLog("%@", error.localizedDescription) | |
return false | |
} | |
captureSession = AVCaptureSession() | |
captureSession!.addInput(input); | |
var captureMetadataOutput = AVCaptureMetadataOutput() | |
captureSession!.addOutput(captureMetadataOutput) | |
var dispatchQueue: dispatch_queue_t; | |
dispatchQueue = dispatch_queue_create("myqueue", nil) | |
captureMetadataOutput.setMetadataObjectsDelegate(self, queue: dispatchQueue) | |
captureMetadataOutput.metadataObjectTypes = [AVMetadataObjectTypeQRCode] | |
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession) | |
videoPreviewLayer?.videoGravity = AVLayerVideoGravityResizeAspectFill | |
videoPreviewLayer?.frame = viewPreview!.layer.bounds | |
viewPreview?.layer.addSublayer(videoPreviewLayer) | |
captureSession?.startRunning() | |
return true; | |
} | |
func captureOutput(captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [AnyObject]!, fromConnection connection: AVCaptureConnection!) { | |
if let metadataObjects = metadataObjects { | |
if metadataObjects.count > 0 { | |
var metadataObj = metadataObjects[0] as! AVMetadataMachineReadableCodeObject | |
if metadataObj.type == AVMetadataObjectTypeQRCode { | |
NSLog("Cpature: %@", metadataObj.stringValue) | |
} | |
} | |
} | |
} | |
} | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment