swift photo album camera permissions processing example details

preface

Recently, I met the demand of obtaining the permission of photo album camera in the development process. I finally solved the problem by searching the relevant information, and I decided to record it because I would use it later. I won't say any more, let's have a look at the detailed introduction.

Note: must be in first info.plist Add two keyNSPhotoLibraryUsageDescription, and NSCameraUsageDescription, and fill in the prompt content.

The camera

//  use 
self.cameraPermissions(authorizedBlock: {
 print(" Open the camera ")
}, deniedBlock: {
 print(" No permission to use the camera ")
})

//  Camera permissions 
class func cameraPermissions(authorizedBlock: OperationBlock?, deniedBlock: OperationBlock?) {
 let authStatus = AVCaptureDevice.authorizationStatus(for: AVMediaType.video)
 
 // .notDetermined .authorized .restricted .denied
 if authStatus == .notDetermined {
  //  The first 1 Secondary trigger authorization  alert
  AVCaptureDevice.requestAccess(for: .video, completionHandler: { (granted: Bool) in
   self.cameraPermissions(authorizedBlock: authorizedBlock, deniedBlock: deniedBlock)
  })
 } else if authStatus == .authorized {
  if authorizedBlock != nil {
   authorizedBlock!()
  }
 } else {
  if deniedBlock != nil {
   deniedBlock!()
  }
 }
}

Photo album

iOS 9.0 ALAssetsLibrary is out of date, use PHPhotoLibrary instead

//  use 
self.photoAlbumPermissions(authorizedBlock: {
 print(" Open the photo album ")
}, deniedBlock: {
 print(" No permission to open the album ")
})

//  Photo album permissions 
class func photoAlbumPermissions(authorizedBlock: OperationBlock?, deniedBlock: OperationBlock?) {
 let authStatus = PHPhotoLibrary.authorizationStatus()
 
 // .notDetermined .authorized .restricted .denied
 if authStatus == .notDetermined {
  //  The first 1 Secondary trigger authorization  alert
  PHPhotoLibrary.requestAuthorization { (status:PHAuthorizationStatus) -> Void in
   self.photoAlbumPermissions(authorizedBlock: authorizedBlock, deniedBlock: deniedBlock)
  }
 } else if authStatus == .authorized {
  if authorizedBlock != nil {
   authorizedBlock!()
  }
 } else {
  if deniedBlock != nil {
   deniedBlock!()
  }
 }
}

conclusion