Request Permission for Camera and Library in iOS 10 - Info.plist

You can also request for access programmatically, which I prefer because in most cases you need to know if you took the access or not.

Swift 4 update:

    //Camera
    AVCaptureDevice.requestAccess(for: AVMediaType.video) { response in
        if response {
            //access granted
        } else {

        }
    }

    //Photos
    let photos = PHPhotoLibrary.authorizationStatus()
    if photos == .notDetermined {
        PHPhotoLibrary.requestAuthorization({status in
            if status == .authorized{
                ...
            } else {}
        })
    }

You do not share code so I cannot be sure if this would be useful for you, but general speaking use it as a best practice.

You have to add the below permission in Info.plist. More Referance

Camera :

Key       :  Privacy - Camera Usage Description   
Value     :  $(PRODUCT_NAME) camera use

Photo :

Key       :  Privacy - Photo Library Usage Description    
Value     :  $(PRODUCT_NAME) photo use

Info.plist

Limited Photos

<key>PHPhotoLibraryPreventAutomaticLimitedAccessAlert</key>
<true/>

Camera

<key>NSCameraUsageDescription</key>
<string>$(PRODUCT_NAME) camera description.</string>

Photos

<key>NSPhotoLibraryUsageDescription</key>
<string>$(PRODUCT_NAME)photos description.</string>

Save Photos

<key>NSPhotoLibraryAddUsageDescription</key>
<string>$(PRODUCT_NAME) photos add description.</string>

Location

<key> NSLocationWhenInUseUsageDescription</key>
<string>$(PRODUCT_NAME) location description.</string>

Apple Music

<key>NSAppleMusicUsageDescription</key>
<string>$(PRODUCT_NAME) My description about why I need this capability</string>

Calendar

<key>NSCalendarsUsageDescription</key>
<string>$(PRODUCT_NAME) My description about why I need this capability</string>

Siri

<key>NSSiriUsageDescription</key>
<string>$(PRODUCT_NAME) My description about why I need this capability</string>

Use the plist settings mentioned above and the appropriate accessor (AVCaptureDevice or PHPhotoLibrary), but also alert them and send them to settings if you really need this, like so:

Swift 4.0 and 4.1

func proceedWithCameraAccess(identifier: String){
    // handler in .requestAccess is needed to process user's answer to our request
    AVCaptureDevice.requestAccess(for: .video) { success in
      if success { // if request is granted (success is true)
        DispatchQueue.main.async {
          self.performSegue(withIdentifier: identifier, sender: nil)
        }
      } else { // if request is denied (success is false)
        // Create Alert
        let alert = UIAlertController(title: "Camera", message: "Camera access is absolutely necessary to use this app", preferredStyle: .alert)

        // Add "OK" Button to alert, pressing it will bring you to the settings app
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { action in
          UIApplication.shared.open(URL(string: UIApplicationOpenSettingsURLString)!)
        }))
        // Show the alert with animation
        self.present(alert, animated: true)
      }
    }
  }

File: Info.plist

For Camera:

<key>NSCameraUsageDescription</key>
<string>You can take photos to document your job.</string>

For Photo Library, you will want this one to allow app user to browse the photo library.

<key>NSPhotoLibraryUsageDescription</key>
<string>You can select photos to attach to reports.</string>

Request Permission for Camera and Library in iOS 10 - Info.plist

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