Presenting camera permission dialog in iOS 8

Question

When my app tries to access the camera for the first time on iOS 8, the user is presented with a camera permission dialog, much like the microphone one for microphone access

Answer 1

I make an access check on the app delegate.

import UIKit
import AVFoundation
import Photos

        func applicationDidBecomeActive(application: UIApplication) {
            cameraAllowsAccessToApplicationCheck()
            internetAvailabilityOnApplicationCheck()
            photoLibraryAvailabilityCheck()
        }

    //MARK:- CAMERA ACCESS CHECK
        func cameraAllowsAccessToApplicationCheck()
        {
            let authorizationStatus = AVCaptureDevice.authorizationStatusForMediaType(AVMediaTypeVideo)
            switch authorizationStatus {
            case .NotDetermined:
                // permission dialog not yet presented, request authorization
                AVCaptureDevice.requestAccessForMediaType(AVMediaTypeVideo,
                    completionHandler: { (granted:Bool) -> Void in
                        if granted {
                            print("access granted")
                        }
                        else {
                            print("access denied")
                        }
                })
            case .Authorized:
                print("Access authorized")
            case .Denied, .Restricted:
            alertToEncourageCameraAccessWhenApplicationStarts()
            default:
                print("DO NOTHING")
            }
        }
        //MARK:- PHOTO LIBRARY ACCESS CHECK
        func photoLibraryAvailabilityCheck()
        {
            if PHPhotoLibrary.authorizationStatus() == PHAuthorizationStatus.Authorized
            {

            }
            else
            {
                var cameraUnavailableAlertController = UIAlertController (title: "Photo Library Unavailable", message: "Please check to see if device settings doesn't allow photo library access", preferredStyle: .Alert)

                var settingsAction = UIAlertAction(title: "Settings", style: .Destructive) { (_) -> Void in
                    let settingsUrl = NSURL(string:UIApplicationOpenSettingsURLString)
                    if let url = settingsUrl {
                        UIApplication.sharedApplication().openURL(url)
                    }
                }
                var cancelAction = UIAlertAction(title: "Okay", style: .Default, handler: nil)
                cameraUnavailableAlertController .addAction(settingsAction)
                cameraUnavailableAlertController .addAction(cancelAction)
                self.window?.rootViewController!.presentViewController(cameraUnavailableAlertController , animated: true, completion: nil)
            }
        }
        func internetAvailabilityOnApplicationCheck()
        {
            //MARK:- INTERNET AVAILABLITY
            if InternetReachability.isConnectedToNetwork() {

            }
            else
            {
                dispatch_async(dispatch_get_main_queue(), {

                    //INTERNET NOT AVAILABLE ALERT
                    var internetUnavailableAlertController = UIAlertController (title: "Network Unavailable", message: "Please check your internet connection settings and turn on Network Connection", preferredStyle: .Alert)

                    var settingsAction = UIAlertAction(title: "Settings", style: .Destructive) { (_) -> Void in
                        let settingsUrl = NSURL(string:UIApplicationOpenSettingsURLString)
                        if let url = settingsUrl {
                            UIApplication.sharedApplication().openURL(url)
                        }
                    }
                    var cancelAction = UIAlertAction(title: "Okay", style: .Default, handler: nil)
                    internetUnavailableAlertController .addAction(settingsAction)
                    internetUnavailableAlertController .addAction(cancelAction)
                    self.window?.rootViewController!.presentViewController(internetUnavailableAlertController , animated: true, completion: nil)
                })
            }
        }

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