Hi i try generate vcard qr .But when the qr content is larger, the qr reader is not able to detect. Any solution?example
http://postimg.org/image/g2t534lzb/

Hello Guys,
I am using this barcode reader and it seems very good but i am facing one issue with CODE-128 type. I am attaching screenshot with highlighting two different barcodes but with same type CODE-128. The green one is very easily readable within a second but i am facing difficulty with red one. It takes a lot of time to read with 90% failure rate.I am using version 6.0 and i need very urgent help. Your help will be appreciated. Thanks

Hi, I've the top buttons (flash button and front camera button) that goes over status bar. There is any way to move the buttons a little bit down?
Another question, there is any way to customize the button cancel or customize the general view?

This is my view

As per subject, why it happen? It suddenly not scanning at all if 1 second earlier. If more than 1 second, it scan successfully.

I got this error message when I try to navigate another view controller if qr code detected.

2015-01-20 10:39:49.474 *[228:9160] Warning: Attempt to present * on * whose view is not in the window hierarchy!

My code

`
@IBAction func btnQrCode(sender: AnyObject) {
reader.modalPresentationStyle = .FormSheet
reader.delegate = self

    reader.completionBlock = { (result: String?) in
        println(result)

        if result != nil {
            let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)

            let successViewController = storyBoard.instantiateViewControllerWithIdentifier("successView") as SuccessViewController
            self.presentViewController(successViewController, animated:true, completion:nil)

        }

    }

    presentViewController(reader, animated: true, completion: nil)

}

`

Related to issue 23 #23

I want to use your reader but need to provide my own UI overlay so I need to insert codeReader.previewLayer onto my own view.

But QRCodeReaderViewController's codeReader uses the default access modifier which is 'internal'. Could you change it to 'public' so that we can access it

As per subject, I got this error message on this line

import UIKit

/// Overlay over the camera view to display the area (a square) where to scan the code
final class ReaderOverlayView: UIView {
  private var overlay: CAShapeLayer = {
    var overlay = CAShapeLayer()
    overlay.backgroundColor = UIColor.clearColor().CGColor
    overlay.fillColor       = UIColor.clearColor().CGColor
    overlay.strokeColor     = UIColor.whiteColor().CGColor
    overlay.lineWidth       = 3
    overlay.lineDashPattern = [7.0, 7.0]
    overlay.lineDashPhase   = 0

    return overlay
  }()

  override init() { //error here
    super.init() //error here

    layer.addSublayer(overlay)
  }

Hi I have the error

UIViewController does not conform to protocol QRCodeReaderViewControllerDelegate

While I have implemented every required method

func reader(reader: QRCodeReaderViewController, didScanResult result: String) {
    self.dismissViewControllerAnimated(true, completion: { [unowned self] () -> Void in
        let alert = UIAlertController(title: "QRCodeReader", message: result, preferredStyle: .Alert)
        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))

        self.presentViewController(alert, animated: true, completion: nil)
        })
}

func readerDidCancel(reader: QRCodeReaderViewController) {
    self.dismissViewControllerAnimated(true, completion: nil)
}

What could be the problem here?

Hey, i get this Error Message when starting your Example Project on Xcode 6.1.1

QRCodeReader.swift[70320:1605607] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[AVCaptureMetadataOutput setMetadataObjectTypes:] - unsupported type found. Use -availableMetadataObjectTypes.'

thanks for your help

I am new with swift, and try develop a simple app for IPad2 with read a QRCode, I create this code:

//
//  ViewController.swift
//  Minha Primeira Interface
//
//  Created by Carlos Delfino on 17/09/15.
//  Copyright © 2015 Carlos Delfino. All rights reserved.
//

import UIKit
import AVFoundation
import QRCodeReader

class ViewController: UIViewController, QRCodeReaderViewControllerDelegate{

    // MARK: properties
    @IBOutlet weak var loginTextField: UITextField!
    @IBOutlet weak var passwordTextField: UITextField!
    @IBOutlet weak var loginButton: UIButton!
    @IBOutlet weak var logoffButton: UIButton!
    @IBOutlet weak var consultDocumentButton: UIButton!
    @IBOutlet weak var loginMsg: UILabel!

    @IBOutlet var loginView: UIView!
    @IBOutlet var documentConsultView: UIView!

    var user: User?

    // Good practice: create the reader lazily to avoid cpu overload during the
    // initialization and each time we need to scan a QRCode
    lazy var reader = QRCodeReaderViewController(metadataObjectTypes: [AVMetadataObjectTypeQRCode])


    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: Actions
    @IBAction func doLogin(sender: UIButton) {

        loginMsg.hidden = true

        if(loginTextField.text == "CarlosDelfino"){
            user = User(name: "CarlosDelfino")

        }else{
            loginMsg.text = "Falha no Login, não foi encontrada as credenciais informadas"
            loginMsg.hidden = false
            user = nil
        }
         passwordTextField.text = ""
    }

    override func shouldPerformSegueWithIdentifier(identifier: String, sender: AnyObject?) -> Bool {

        var show = false;
        if (user == nil && identifier == "FromLoginToConsultDocument_Login") {
            show = false
        }else if (identifier == "FromConsultDocumentToLogin_Logout"){
            show = true
        }else{
            show = true
        }

        return show;

    }

    @IBAction func doConsultDocument(sender: UIButton){
        // Retrieve the QRCode content
        // By using the delegate pattern
        reader.delegate = self

        // Or by using the closure pattern
        reader.completionBlock = { (result: String?) in
            print(result)
        }

        // Presents the reader as modal form sheet
        reader.modalPresentationStyle = .FormSheet
        presentViewController(reader, animated: true, completion: nil)

    }

    @IBAction func doLogout(sender: UIButton) {
       user = nil
    }

    // MARK: - QRCodeReader Delegate Methods
    /**
        Tells the delegate that the reader did scan a code.

        - parameter reader: A code reader object informing the delegate about the scan result.
        - parameter result: The result of the scan
    */
    func reader(reader: QRCodeReaderViewController, didScanResult result: String){
        self.dismissViewControllerAnimated(true, completion: nil)
    }

    /**
        Tells the delegate that the user wants to stop scanning codes.

        - parameter reader: A code reader object informing the delegate about the cancellation.
    */
    func readerDidCancel(reader: QRCodeReaderViewController){
        self.dismissViewControllerAnimated(true, completion: nil)   
    }   
}

but where I click on button "Consultar Documento", and call handle action "doConsultDocument(UIButton) I get this exception:

2015-09-19 16:02:33.344 Minha Primeira Interface[7980:4477032] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[AVCaptureMetadataOutput setMetadataObjectTypes:] - unsupported type found.  Use -availableMetadataObjectTypes.'
*** First throw call stack:
(
    0   CoreFoundation                      0x00611a94 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x02213e02 objc_exception_throw + 50
    2   AVFoundation                        0x002ff82e -[AVCaptureMetadataOutput setMetadataObjectTypes:] + 500
    3   QRCodeReader                        0x0017ca89 _TFC12QRCodeReader12QRCodeReaderP33_B9DC3D797F478C8B92B825BD13CC602626configureDefaultComponentsfS0_FT_T_ + 617
    4   QRCodeReader                        0x0017c76f _TFC12QRCodeReader12QRCodeReadercfMS0_FT19metadataObjectTypesGSaSS__S0_ + 495
    5   QRCodeReader                        0x0017c80b _TFC12QRCodeReader12QRCodeReaderCfMS0_FT19metadataObjectTypesGSaSS__S0_ + 91
    6   QRCodeReader                        0x00182efc _TFC12QRCodeReader26QRCodeReaderViewControllercfMS0_FT17cancelButtonTitleSS19metadataObjectTypesGSaSS_19startScanningAtLoadSb_S0_ + 108
    7   QRCodeReader                        0x00182d36 _TFC12QRCodeReader26QRCodeReaderViewControllercfMS0_FT19metadataObjectTypesGSaSS_19startScanningAtLoadSb_S0_ + 182
    8   QRCodeReader                        0x00182e02 _TFC12QRCodeReader26QRCodeReaderViewControllerCfMS0_FT19metadataObjectTypesGSaSS_19startScanningAtLoadSb_S0_ + 98
    9   Minha Primeira Interface            0x000c4152 _TFC24Minha_Primeira_Interface14ViewControllerg6readerC12QRCodeReader26QRCodeReaderViewController + 386
    10  Minha Primeira Interface            0x000c4ec2 _TFC24Minha_Primeira_Interface14ViewController17doConsultDocumentfS0_FCSo8UIButtonT_ + 50
    11  Minha Primeira Interface            0x000c53ad _TToFC24Minha_Primeira_Interface14ViewController17doConsultDocumentfS0_FCSo8UIButtonT_ + 61
    12  libobjc.A.dylib                     0x022280b5 -[NSObject performSelector:withObject:withObject:] + 84
    13  UIKit                               0x00df4c40 -[UIApplication sendAction:to:from:forEvent:] + 118
    14  UIKit                               0x00df4bbf -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 64
    15  UIKit                               0x00f8a8fc -[UIControl sendAction:to:forEvent:] + 79
    16  UIKit                               0x00f8ac7c -[UIControl _sendActionsForEvents:withEvent:] + 408
    17  UIKit                               0x00f89c87 -[UIControl touchesEnded:withEvent:] + 714
    18  UIKit                               0x00e6beb8 -[UIWindow _sendTouchesForEvent:] + 1095
    19  UIKit                               0x00e6cda4 -[UIWindow sendEvent:] + 1118
    20  UIKit                               0x00e159b3 -[UIApplication sendEvent:] + 266
    21  UIKit                               0x00dec903 _UIApplicationHandleEventQueue + 7327
    22  CoreFoundation                      0x0052be7f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
    23  CoreFoundation                      0x00521b0b __CFRunLoopDoSources0 + 523
    24  CoreFoundation                      0x00520f28 __CFRunLoopRun + 1032
    25  CoreFoundation                      0x00520866 CFRunLoopRunSpecific + 470
    26  CoreFoundation                      0x0052067b CFRunLoopRunInMode + 123
    27  GraphicsServices                    0x04e85664 GSEventRunModal + 192
    28  GraphicsServices                    0x04e854a1 GSEventRun + 104
    29  UIKit                               0x00df2cc1 UIApplicationMain + 160
    30  Minha Primeira Interface            0x000c782c main + 140
    31  libdyld.dylib                       0x053faa21 start + 1
    32  ???                                 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 
´´´

When installing using CocoaPods, xcode offers to convert to Swift 3. I tried pointing to the tip of the master like so, but without any luck:
pod 'QRCodeReader.swift', :git => 'https://github.com/yannickl/QRCodeReader.swift' #point to master to get swift 3 version.

Browsing the files here on github, it seems they do not comply with the Swift 3 syntax that xcode 8 enforces (e.g. replacing public with open, private with fileprivate).

The QR Code read is too fast, I can't even position my phone correctly, so it often get a nil result back.
Is there any way to set a delay or a NSTimer to give the app more time to focus and positon the phone correctly?

I used the same kind of code in my application. It takes some time in reading the code. What could be the reason and its solution. Do I need to use ZXing kind of third party library for this?

Added pod into podfile as were shown.
pod 'QRCodeReader.swift', '~> 6.1.0'

when run: pod install get this error:
None of your spec sources contain a spec satisfying the dependency: QRCodeReader.swift (~> 6.1.0).

I kinda need only a scanner view (no cancel button and no switch to front camera button) to be displayed on a screen. So I added this method:

public func returnCameraView () -> UIView {
return cameraView;
}

I believe that adding only a clean scanner view to my view controller would be more preferable for the component.

If I scanned a vcard, how am I able to automatically create a contact based on the vcard, or is there any way for me to workaround?

My app is crashing on some specific devices in production. This is the line where it crashes.
QRCodeReader: function signature specialization <Arg[0] = Owned To Guaranteed, Arg[1] = Dead> of static QRCodeReader.QRCodeReader.supportsMetadataObjectTypes (QRCodeReader.QRCodeReader.Type)([Swift.String]?) -> Swift.Bool + 2408

Thank you for adding metadataObjectTypes selection.

I would be happy if you add "All types" option for that.
As you know, 1D barcodes are very much mixed up. code39, code128, ......
Beginners appreciate capable apps, experts appreciate efficient apps, but they know how to save memory.

QRCodeReader.swift

Line:201 for current in metadataObjects {

Please consider.
Thank you. Hiro

I don't know why it happens like this after I updated my xcode to 6.3.1 and pod. I got this strange error message suddenly even your library already included inside pod.

/Users/MNurdin/Documents/iOS/xxxxx/Controllers/MethodViewController.swift:13:47: Use of undeclared type 'QRCodeReaderViewControllerDelegate'

My code

import UIKit
import CoreData
import AVFoundation

class MethodViewController: UIViewController, QRCodeReaderViewControllerDelegate { //error here

Please advice. Thank you.

Hi,

First, thanks for your nice work :)

In my app, I need to read different types of codes, and depending on the type of the scanned code, I need to substring the resulting string code. And, I might have missed something but I did not managed to get the type of the scanned code read (_readableCodeObject.type).

For people who need to read different types of codes, would it be possible to add the type of the code actually read ?

The problem is : the output will not result in a String? anymore...

is it compatible with swift 2.3 in iOS 8.0 ?

I am trying to use CocoaPods for the first time. First impression is VERY GOOD.

But it gives some errors.

Warning: no rule to process file '/Users/xxxx/x/Pods/QRCodeReader.swift/README.md' of type net.daringfireball.markdown for architecture i386

XCODE thinks README.md should be compiled but he does not know how to.
Maybe it is caused by CocoaPads, but I think it is better to mention in the manual at "Installation" area to remove README.md from "Build Phases->Compile Sources" in the project file.
Unless this problem is happening only on me.

Hiro

Build Failed !!!
Hi guy , in QRCodeReader.swift -> return .defaultDevice(withDeviceType: .builtInWideAngleCamera, mediaType: AVMediaTypeVideo, position: .front) failed !!!

I have opened your project from Examples/QRCodeReader.swift.xcodeproj, but it does not appear to scan codes. I have a basic QR code in the center of the rectangle, but I cannot seem to get it to display the text encoded in the QR code.

I was trying compile a project in Xcode 8.0 GM (swift3 branch), and got new deprecation warnings.

Screen captures below

Don't have time to fix at the moment so thought I'd file an issue.

It's strange and I personally can't reproduce it, however I can see that many users have a crash on line:

if QRCodeReader.supportsMetadataObjectTypes() {...}

Is there a way for it to not recognize QRCodes while still showing the camera view?

Hi @yannickl ,

Your library was so great, I'm using it in my applications. Just want to know if are you considering to update this in the latest Xcode and Swift versions ?

Thanks.

How I can create QR Code focus effect like picture below?

I tried the swift3 branch today, and encountered many issues where it would not compile under Xcode 8.0 ß6 / Swift 3.0 / iOS 10

I was able to make the updates to get Framework compiling/working in Swift 3. I created this issue so to track this and will generate a PR.

Is it possible to change the camera icon? Because it does not fit into my design

Hi, I'm new to swift n xcode..

Thx for the qrcodereader pod and it works perfectly fine.

My question is, if I want to use front camera as default, or remove "cancel" words...

1. should I edit the library?
2. or how can I know what's function did the library allow me to configure, e.g: reader.useFrontCamera = true

I'm going to run its next line after get QR code.
However, my code is already run the next line while show the camera view.
Help me, please. Sorry for my bad english.
My code is as follows.

func myFunc(){
  getQRCode()
  if self.myQRCode == nil {  // self.myQRCode always hasn't readed code ...?????
.......
  } else {

  }
}
func getQRCode(){
  reader.delegate = self

  // Or by using the closure pattern
  reader.completionBlock = { (result: String?) in
    self.myQRCode = result
  }

  // Presents the reader as modal form sheet
  reader.modalPresentationStyle = .FormSheet
  presentViewController(reader, animated: true, completion: nil)
}

Often with small codes, the scanner is not able to focus properly. Is there a way to add a "tap to focus" behavior on the AVCaptureView?

Hi,

thanks for this great pod! I'm using your project for an iPhone app and I want to hide the status bar in the modally presented QR scanner view? Is there any way to hide the status bar in the QRCodeReaderViewController?

Thanks!

Best

Alex

Can you please give an example how to use TorchToggle and SwitchCameraButton? Thank you

I've installed using CocoaPods 7.0.0.
Xcode 8 wants to migrate QRCodeReader to Swift 3 but then won't let me as some of the files are locked as it is a CocoaPod.
If I say no to Swift 3 migration then it won't compile my code as it doesn't think QRCodeReader exists.

Hi all,

I've integrated using the classes, because CocoaPods didn't work.
Now I'm having this error : does not conform to protocol qrcodereaderviewcontrollerdelegate

And here's my class beginning code :
class DeskBookingViewController: UIViewController, QRCodeReaderViewControllerDelegate, BookableDelegate {

What's wrong here ?
Thanks,

• Add delegate QRCodeReaderViewControllerDelegate
• Add import AVFoundation
• The QRCodeReaderViewControllerDelegate implementations is:

    lazy var readerVC = QRCodeReaderViewController(metadataObjectTypes: [AVMetadataObjectTypeQRCode])

    @IBAction func scanAction(sender: AnyObject) {
        // Retrieve the QRCode content
        // By using the delegate pattern
        readerVC.delegate = self

        // Or by using the closure pattern
        readerVC.completionBlock = { (result: QRCodeReaderResult?) in
            print(result)
        }

        // Presents the readerVC as modal form sheet
        readerVC.modalPresentationStyle = .FormSheet
        presentViewController(readerVC, animated: true, completion: nil)
    }


    // MARK: - QRCodeReader Delegate Methods
    func reader(reader: QRCodeReaderViewController, didScanResult result: QRCodeReaderResult) {
        self.dismissViewControllerAnimated(true, completion: nil)
    }

    func readerDidCancel(reader: QRCodeReaderViewController) {
        self.dismissViewControllerAnimated(true, completion: nil)
    }

• Add target to Podfile

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'
use_frameworks!

target 'TargetName' do
    pod 'QRCodeReader.swift', '~> 6.0.0'
end

its give me this error on Xcode 7.3.1 swift 2.2;

fatal error: unexpectedly found nil while unwrapping an Optional value

when i compile and run my project give it this error, i don't write in viewdidload method for calling scan method, actually IBActionButton triggered for scan.

note: this error occurred in this week, 23-28 August 2016.

My app only supports Portrait mode but when the phone is put into landscape, the previewLayer is rotated

In QRCodeReaderViewController.orientationDidChanged(notification: NSNotification) you call supportedInterfaceOrientations() but because QRCodeReaderViewController doesn't declare override public func supportedInterfaceOrientations() -> UIInterfaceOrientationMask, the default results are returned (Portrait and Landscape).

Ive had to modify QRCodeReaderViewController and insert this to prevent rotation
override public func supportedInterfaceOrientations() -> UIInterfaceOrientationMask { return [.Portrait] }

Perhaps you could have a delegate call to get the correct supportedInterfaceOrientations or get them from the parent view controller?

I simply implemented QRCodeReader like you did in the example but it seems to don't scan others types of bar code. I initialised the view controller with EAN13 as metadata object type and it doesn't scan EAN 13 bar code. Otherwise it continues to scan QRCode.

class ViewController: UIViewController, QRCodeReaderViewControllerDelegate {
    lazy var reader = QRCodeReaderViewController(metadataObjectTypes: [AVMetadataObjectTypeEAN13Code])

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func scanAction(sender: AnyObject) {
        reader.delegate = self
        reader.modalPresentationStyle = .FormSheet
        presentViewController(reader, animated: true, completion: nil)
    }

    func reader(reader: QRCodeReaderViewController, didScanResult result: String) {
        self.dismissViewControllerAnimated(true, completion: nil)
        println(result)
    }

    func readerDidCancel(reader: QRCodeReaderViewController) {
        self.dismissViewControllerAnimated(true, completion: nil)
    }
}

I would like to be able to differentiate between stop scanning and stop running.

Currently QRCodeReader calls stopScanning when a QR code is found. stopScanning calls stopRunning on the AVCaptureSession which stops the video preview. This is undesirable for us as the 'QR screen' is not dismissed when a QR code is found and the sudden halting of the video preview is not a smooth user experience.

I can use the QRCodeReaderViewControllerDelegate in a UITableViewController? (Xcode 7 via cocoapods). I'm with this problem. Can anyone help me?

/Users/bhd/dev/IOS/FeedTableViewController.swift:8:7: Type 'FeedTableViewController' does not conform to protocol 'QRCodeReaderViewControllerDelegate'
My code

import UIKit
import AVFoundation
import Alamofire
import Haneke
import QRCodeReader
import SwiftyJSON

class FeedTableViewController: UITableViewController, QRCodeReaderViewControllerDelegate { //error here

egrep: /Pods/Target Support Files/QRCodeReader.swift: Is a directory

WARNING

Version: fc62c9e
The front facing camera on my iPhone 6 or new iPad Air can't seem to focus in to scan a QR Code or Code 39. It looks like the image is reversed when scanning the code39. Also it would be nice if there was a separate branch for XCode 6 and Swift 1.2.

dyld: Symbol not found: _AVCaptureDeviceTypeBuiltInWideAngleCamera
Referenced from: /var/containers/Bundle/Application/DDAF584C-7F2E-4C27-8AA6-8E162CFCAA91/QRCodeReader.swift.app/QRCodeReader.swift
Expected in: /System/Library/Frameworks/AVFoundation.framework/AVFoundation
in /var/containers/Bundle/Application/DDAF584C-7F2E-4C27-8AA6-8E162CFCAA91/QRCodeReader.swift.app/QRCodeReader.swift
(lldb)
Thread 1 : Signal SIGABRT
i run in iphone5C

Hi

i getting a gab in the middle off my tabbar after succesfull scanning a Ticket, if i press on the screen and wait for a few second i get my tabbar button back but with the text notification instead of "scanner"

Thanxz

Hi
I'm using this great scan tool to implement my app. very nice and fast.
no problem if I use iPhone 5s to scan QR code.
but once I use iPhone 6 to scan, the API of QRCodeReader.isAvailable() returns false. could you tell me why? thanks