ユーザーが写真を許可するとすぐには何も見ることができません3

Question

私はフォトライブラリの画像を持ったコレクションビューを持っていますが、そのユーザーのためだけに問題があります写真の使用を許可する - そして、ユーザは、ユーザがanyImagesを見ることができないと、そのビューコントローラを閉じ、画像ここ

を見に再び戻ってくる必要があります写真を使用することを可能にするコードです：あなたはをユーザーに依頼する必要があり

import UIKit 
import Photos 

class typeandtranslateViewController: UIViewController , UIImagePickerControllerDelegate , UINavigationControllerDelegate , UICollectionViewDelegate, UICollectionViewDataSource , UITextFieldDelegate { 


static var checkTextField = Bool() 

@IBOutlet var backgroundimg: UIImageView! 
@IBOutlet var frontimg: UIImageView! 
@IBOutlet weak var typeView: UIView! 

let arr_img = NSMutableArray() 
let arr_selected = NSMutableArray() 

@IBOutlet var collview: UICollectionView! 


@IBOutlet weak var sefareshTitleTextField: UITextField! 


@IBAction func caneraButton(_ sender: UIButton) { 

    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) { 
     let imagePicker = UIImagePickerController() 
     imagePicker.delegate = self 
     imagePicker.sourceType = UIImagePickerControllerSourceType.camera ; 

     imagePicker.allowsEditing = false 
     self.present(imagePicker,animated: true , completion: nil) 
    } 

    print("Camera!") 


} 
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { 

    let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage 

    UIImageWriteToSavedPhotosAlbum(selectedImage,self,nil,nil) 

    dismiss(animated: true, completion: nil) 

    print("save Image ") 



} 
@IBOutlet weak var viewCamera: UIView! 
override func viewDidLoad() { 
    super.viewDidLoad() 



    print("Text Field Condition ") 

    if sefareshTitleTextField!.text! == "" { 

     typeandtranslateViewController.checkTextField = false 


     print("sefaresh title is nill") 
    } else if sefareshTitleTextField!.text! != "" { 


     typeandtranslateViewController.checkTextField = true 
     print("sefaresh title isnt nill") 

    } 

    self.sefareshTitleTextField.delegate = self 


    collview?.allowsMultipleSelection = true 

    let allPhotosOptions : PHFetchOptions = PHFetchOptions.init() 
    allPhotosOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: true)] 
    let allPhotosResult = PHAsset.fetchAssets(with: .image, options: allPhotosOptions) 
    allPhotosResult.enumerateObjects({ (asset, idx, stop) in 

     self.arr_img.add(asset) 

    }) 


    self.typeView.layer.cornerRadius = self.typeView.frame.size.height/50 
    self.typeView.layer.borderWidth = 1 
    self.typeView.layer.borderColor = UIColor.clear.cgColor 
    self.typeView.clipsToBounds = true 


    self.viewCamera.layer.cornerRadius = 5 
    self.viewCamera.layer.borderWidth = 1 
    self.viewCamera.layer.borderColor = UIColor.clear.cgColor 
    self.viewCamera.clipsToBounds = true 


    self.tabBarController?.tabBar.isHidden = true 
    self.navigationController?.isNavigationBarHidden = true 


    let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.light) 
    let blurView = UIVisualEffectView(effect: blurEffect) 

    blurView.frame = CGRect(x: self.backgroundimg.frame.origin.x, y: self.backgroundimg.frame.origin.y, width: self.backgroundimg.frame.size.width, height: self.backgroundimg.frame.size.height) 

    blurView.autoresizingMask = [.flexibleWidth, .flexibleHeight] 

    self.backgroundimg.addSubview(blurView) 

} 

func getAssetThumbnail(asset: PHAsset, size: CGFloat) -> UIImage { 
    let retinaScale = UIScreen.main.scale 
    let retinaSquare = CGSize(width: size * retinaScale, height: size * retinaScale)//CGSizeMake(size * retinaScale, size * retinaScale) 
    let cropSizeLength = min(asset.pixelWidth, asset.pixelHeight) 
    let square = CGRect(x: 0, y: 0, width: cropSizeLength, height: cropSizeLength)//CGRectMake(0, 0, CGFloat(cropSizeLength), CGFloat(cropSizeLength)) 
    let cropRect = square.applying(CGAffineTransform(scaleX: 1.0/CGFloat(asset.pixelWidth), y: 1.0/CGFloat(asset.pixelHeight))) 

    let manager = PHImageManager.default() 
    let options = PHImageRequestOptions() 
    var thumbnail = UIImage() 

    options.isSynchronous = true 
    options.deliveryMode = .highQualityFormat 
    options.resizeMode = .exact 
    options.normalizedCropRect = cropRect 

    manager.requestImage(for: asset, targetSize: retinaSquare, contentMode: .aspectFit, options: options, resultHandler: {(result, info)->Void in 
     thumbnail = result! 
    }) 


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


} 

func textFieldShouldReturn(_ textField: UITextField) -> Bool { 
    self.view.endEditing(true); 

    if sefareshTitleTextField!.text == "" { 

     typeandtranslateViewController.checkTextField = false 


     print("sefaresh title is nill") 
    } else if sefareshTitleTextField!.text! != "" { 


     typeandtranslateViewController.checkTextField = true 
     print("sefaresh title isnt nill") 

    } 



    return false; 



} 

func textFieldDidBeginEditing(_ textField: UITextField) { 

     if sefareshTitleTextField!.text! == "" { 

     typeandtranslateViewController.checkTextField = false 


     print("sefaresh title is nill") 
     } else if sefareshTitleTextField!.text! != "" { 


     typeandtranslateViewController.checkTextField = true 
     print("sefaresh title isnt nill") 

     } 

} 



//MARK: 
//MARK: Collectioview methods 


func collectionView(_ collectionView: UICollectionView, 
        numberOfItemsInSection section: Int) -> Int { 
    return arr_img.count 
} 
func collectionView(_ collectionView: UICollectionView, 
        cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "celll", 
                for: indexPath) 
    let imgview : UIImageView = cell.viewWithTag(20) as! UIImageView 
    imgview.image = self.getAssetThumbnail(asset: self.arr_img.object(at: indexPath.row) as! PHAsset, size: 150) 

    let selectView : UIImageView = cell.viewWithTag(22) as! UIImageView 
    if arr_selected.contains(indexPath.row){ 

     selectView.image = UIImage(named: "Select.png") 
    }else{ 

     selectView.image = UIImage(named: "radioCircleButton.png") 

    } 

    cell.layer.cornerRadius = 5 
    cell.layer.borderWidth = 1 
    cell.layer.borderColor = UIColor.clear.cgColor 
    cell.clipsToBounds = true 


    return cell 
} 

var selectedIndexes = [NSIndexPath]() { 
    didSet { 
     collview.reloadData() 
    } 
} 
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) 
{ 



    if arr_selected.contains(indexPath.row){ 
     arr_selected.remove(indexPath.row) 
    }else{ 
     arr_selected.add(indexPath.row) 
    } 

    self.collview.reloadData() 

} 



override func viewDidAppear(_ animated: Bool) { 

    let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.dark) 
    let blurView = UIVisualEffectView(effect: blurEffect) 
    blurView.frame = backgroundimg.bounds 
    backgroundimg.addSubview(blurView) 
    backgroundimg.frame = self.view.bounds 
} 

@IBAction func backToTheMainCustom(_ sender: UIButton) { 

    performSegue(withIdentifier: "backToTheMainCustom", sender: self) 

    sefareshTitleTextField!.text! = "" 

    typeandtranslateViewController.checkTextField = false 
} 

} 

Answer 1

ファーストフォトライブラリにアクセスするためのアクセス許可。初めてリクエストが発生した場合は、彼の答えを待ち、UIImagePickerControllerを再度開きます。カメラについて同じ

let photosAccess = PHPhotoLibrary.authorizationStatus() 
switch photosAccess { 
case .notDetermined: 
    // First time here. Request the access 
    PHPhotoLibrary.requestAuthorization({status in 
     if status == .authorized{ 
      // Access was just granted 
      // Open library here 
     } 
    }) 

case .authorized: 
    // Open library here 

case .denied, .restricted: 
    // Photos access is not granted. 
    // Good place to take user to app settings. 
} 

：：次のコードを確認してください

AVCaptureDevice.requestAccess(forMediaType: AVMediaTypeVideo) { response in 
    if response { 
     DispatchQueue.main.async { 
      // Show camera UI here 
     } 
    } else { 
     DispatchQueue.main.async { 
      // Access is restricred 
     } 
    } 
}