Last active
March 16, 2018 17:54
-
-
Save willianpinho/9c3d503ea0d1e0d215bf5bdfb9b3235b to your computer and use it in GitHub Desktop.
Gist for DevGrid
This file contains 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
// | |
// ViewController.swift | |
// QR-Gist | |
// | |
// Created by Willian Pinho on 16/03/18. | |
// Copyright © 2018 Willian Pinho. All rights reserved. | |
// | |
import UIKit | |
class MainViewController: UIViewController { | |
@IBOutlet weak var qrImageView: UIImageView! | |
@IBOutlet weak var scanGistButton: UIButton! | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
definesPresentationContext = true | |
self.customLayout() | |
} | |
override func viewWillAppear(_ animated: Bool) { | |
self.navigationController?.isNavigationBarHidden = true | |
} | |
func customLayout() { | |
addGestureImage(image: qrImageView, selector: #selector(openLink)) | |
scanGistButton.addTarget(self, action: #selector(goToScan), for: UIControlEvents.touchUpInside) | |
} | |
func addGestureImage(image: UIImageView, selector: Selector) { | |
let longPressGestureRecognizer = UILongPressGestureRecognizer(target: self, action: selector) | |
image.isUserInteractionEnabled = true | |
image.addGestureRecognizer(longPressGestureRecognizer) | |
} | |
@objc func openLink() { | |
let actionSheet = UIAlertController(title: "I'm also very curious ", message: nil, preferredStyle: .actionSheet) | |
actionSheet.addAction(UIAlertAction(title: "Open My LinkedIn Profile", style: .default, handler: { | |
(alert: UIAlertAction!) -> Void in | |
guard let url = URL(string: "linkedin://profile/willianpinho") else { | |
return print("Can't Open Link ") | |
} | |
self.openUrl(url: url) | |
})) | |
actionSheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil)) | |
present(actionSheet, animated: true, completion: nil) | |
} | |
func openUrlWithSafari() { | |
guard let url = URL(string: "https://www.linkedin.com/in/willianpinho/") else { | |
return print("Erro ao abrir link") | |
} | |
self.openUrl(url: url) | |
} | |
func openUrl(url:URL) { | |
if #available(iOS 10.0, *) { | |
UIApplication.shared.open(url, options: [:], completionHandler: { (success) in | |
if !success { | |
self.openUrlWithSafari() | |
} | |
}) | |
} else { | |
UIApplication.shared.open(url, options: [:], completionHandler: { (success) in | |
if !success { | |
self.openUrlWithSafari() | |
} | |
}) | |
} | |
} | |
@objc func goToScan() { | |
self.openViewControllerWithIdentifier(storyBoard: "Main", identifier: "ScanViewController") | |
} | |
} |
This file contains 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
// | |
// ScanViewController.swift | |
// QR-Gist | |
// | |
// Created by Willian Pinho on 16/03/18. | |
// Copyright © 2018 Willian Pinho. All rights reserved. | |
// | |
import UIKit | |
import AVFoundation | |
class ScanViewController: UIViewController { | |
@IBOutlet weak var bottomLabel: UILabel! | |
var captureSession = AVCaptureSession() | |
var videoPreviewLayer: AVCaptureVideoPreviewLayer? | |
var qrCodeFrameView: UIView? | |
private let supportedCodeTypes = [AVMetadataObject.ObjectType.qr] | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
self.customLayout() | |
let deviceDiscoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInDualCamera], mediaType: AVMediaType.video, position: .back) | |
guard let captureDevice = deviceDiscoverySession.devices.first else { | |
print("Failed to get the camera device") | |
return | |
} | |
do { | |
// Get an instance of the AVCaptureDeviceInput class using the previous device object. | |
let input = try AVCaptureDeviceInput(device: captureDevice) | |
// Set the input device on the capture session. | |
captureSession.addInput(input) | |
// Initialize a AVCaptureMetadataOutput object and set it as the output device to the capture session. | |
let captureMetadataOutput = AVCaptureMetadataOutput() | |
captureSession.addOutput(captureMetadataOutput) | |
// Set delegate and use the default dispatch queue to execute the call back | |
captureMetadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main) | |
captureMetadataOutput.metadataObjectTypes = supportedCodeTypes | |
// captureMetadataOutput.metadataObjectTypes = [AVMetadataObject.ObjectType.qr] | |
} catch { | |
// If any error occurs, simply print it out and don't continue any more. | |
print(error) | |
return | |
} | |
// Initialize the video preview layer and add it as a sublayer to the viewPreview view's layer. | |
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession) | |
videoPreviewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill | |
videoPreviewLayer?.frame = view.layer.bounds | |
view.layer.addSublayer(videoPreviewLayer!) | |
// Start video capture. | |
captureSession.startRunning() | |
view.bringSubview(toFront: bottomLabel) | |
// Initialize QR Code Frame to highlight the QR code | |
qrCodeFrameView = UIView() | |
if let qrCodeFrameView = qrCodeFrameView { | |
qrCodeFrameView.layer.borderColor = UIColor.green.cgColor | |
qrCodeFrameView.layer.borderWidth = 2 | |
view.addSubview(qrCodeFrameView) | |
view.bringSubview(toFront: qrCodeFrameView) | |
} | |
} | |
func customLayout() { | |
self.navigationController?.isNavigationBarHidden = false | |
self.removeNavBarLine() | |
self.setNavigation(title: "Scan QRCode", withTintColor: .willianPinhoOrange, barTintColor: .willianPinhoBlue, andAttributes: [NSAttributedStringKey.font: UIFont.openWorkSansWithType(withSize: 24, type: WorkSansType.light), NSAttributedStringKey.foregroundColor: UIColor.willianPinhoOrange], prefersLargeTitles: false) | |
} | |
func launchApp(decodedURL: String) { | |
if presentedViewController != nil { | |
return | |
} | |
if decodedURL.hasPrefix("https://gist.github.com/") { | |
let alert = Alert.showMessage(title: "Want to open this wonderful gist?", message: "Link of Gist: \(decodedURL)") | |
let confirmAction = UIAlertAction(title: "Of Course!", style: UIAlertActionStyle.default, handler: { (action) -> Void in | |
self.openViewControllerWithIdentifier(storyBoard: "Main", identifier: "GistViewController") | |
}) | |
let cancelAction = UIAlertAction(title: "No, leave me alone!", style: UIAlertActionStyle.cancel, handler: nil) | |
alert.addAction(confirmAction) | |
alert.addAction(cancelAction) | |
present(alert, animated: true, completion: nil) | |
} | |
else { | |
let alert = Alert.showMessage(title: "Sorry!", message: "Maybe in the next version. \nThe developer didn't teach me how to open this kind of URL :(") | |
alert.addAction(Alert.addOkAction(alert: alert)) | |
present(alert, animated: true, completion: nil) | |
} | |
} | |
} | |
extension ScanViewController: AVCaptureMetadataOutputObjectsDelegate { | |
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) { | |
// Check if the metadataObjects array is not nil and it contains at least one object. | |
if metadataObjects.count == 0 { | |
qrCodeFrameView?.frame = CGRect.zero | |
bottomLabel.text = "No QR Code detected" | |
return | |
} | |
// Get the metadata object. | |
let metadataObj = metadataObjects[0] as! AVMetadataMachineReadableCodeObject | |
if supportedCodeTypes.contains(metadataObj.type) { | |
// If the found metadata is equal to the QR code then update the status label's text and set the bounds | |
let barCodeObject = videoPreviewLayer?.transformedMetadataObject(for: metadataObj) | |
qrCodeFrameView?.frame = barCodeObject!.bounds | |
if metadataObj.stringValue != nil { | |
launchApp(decodedURL: metadataObj.stringValue!) | |
bottomLabel.text = metadataObj.stringValue | |
} | |
} | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Awesome comment!