使用 UIImagePickerController 在一个视图中选择不同的图像 [重复]

Question

我们有以下看法：

所有代码都运行良好，但是当我最终选择一张图片时，该照片只放在一个 ImageView 中。它应该像这样工作： 我们点击 UIImageView 下方的每个按钮，它会将选中的图片放到他的 ImageView 中。

我现在的问题是所有按钮都将照片放在第一个 UIImageView 中。

如何放置4张不同的照片？

class selectorDeFotosViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate, UITextViewDelegate {

    //Outlets        
    @IBOutlet weak var fotoUno: UIImageView!
    @IBOutlet weak var fotoDos: UIImageView!
    @IBOutlet weak var fotoTres: UIImageView!
    @IBOutlet weak var fotoCuatro: UIImageView!

    override func viewDidLoad() {

    }

    //Actions       
    @IBAction func CamaraUno(sender: AnyObject) {            
        let alertPictureFrom = UIAlertController(title: "De dónde sacar la foto?", message: "", preferredStyle: UIAlertControllerStyle.ActionSheet)

        presentViewController(alertPictureFrom, animated: true, completion: nil)

        alertPictureFrom.popoverPresentationController?.sourceRect = CGRect(x: 350.0, y: 458.0, width: 1.0, height: 1.0)
        alertPictureFrom.popoverPresentationController?.sourceView = self.view

        alertPictureFrom.addAction(UIAlertAction(title: "Cámara", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .Camera
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)


        }))

        alertPictureFrom.addAction(UIAlertAction(title: "Galería", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .PhotoLibrary
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)

        }))
    }

    @IBAction func camaraDos(sender: AnyObject) {

        let alertPictureFrom = UIAlertController(title: "De dónde sacar la foto?", message: "", preferredStyle: UIAlertControllerStyle.ActionSheet)

        presentViewController(alertPictureFrom, animated: true, completion: nil)

        alertPictureFrom.popoverPresentationController?.sourceRect = CGRect(x: 350.0, y: 458.0, width: 1.0, height: 1.0)
        alertPictureFrom.popoverPresentationController?.sourceView = self.view

        alertPictureFrom.addAction(UIAlertAction(title: "Cámara", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .Camera
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)


        }))

        alertPictureFrom.addAction(UIAlertAction(title: "Galería", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .PhotoLibrary
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)

        }))
    }

    @IBAction func camaraTres(sender: AnyObject) {

        let alertPictureFrom = UIAlertController(title: "De dónde sacar la foto?", message: "", preferredStyle: UIAlertControllerStyle.ActionSheet)

        presentViewController(alertPictureFrom, animated: true, completion: nil)

        alertPictureFrom.popoverPresentationController?.sourceRect = CGRect(x: 350.0, y: 458.0, width: 1.0, height: 1.0)
        alertPictureFrom.popoverPresentationController?.sourceView = self.view

        alertPictureFrom.addAction(UIAlertAction(title: "Cámara", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .Camera
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)


        }))

        alertPictureFrom.addAction(UIAlertAction(title: "Galería", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .PhotoLibrary
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)

        }))
    }

    @IBAction func camaraCuatro(sender: AnyObject) {


        let alertPictureFrom = UIAlertController(title: "De dónde sacar la foto?", message: "", preferredStyle: UIAlertControllerStyle.ActionSheet)

        presentViewController(alertPictureFrom, animated: true, completion: nil)

        alertPictureFrom.popoverPresentationController?.sourceRect = CGRect(x: 350.0, y: 458.0, width: 1.0, height: 1.0)
        alertPictureFrom.popoverPresentationController?.sourceView = self.view

        alertPictureFrom.addAction(UIAlertAction(title: "Cámara", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .Camera
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)


        }))

        alertPictureFrom.addAction(UIAlertAction(title: "Galería", style: .Default, handler: {action in

            let picker = UIImagePickerController()

            picker.sourceType = .PhotoLibrary
            picker.delegate = self
            picker.allowsEditing = true

            self.presentViewController(picker, animated: true, completion: nil)

        }))



    }


    func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {

        fotoUno.image = image



        picker.dismissViewControllerAnimated(true, completion: nil)

    }

Answer 1

有很多方法可以实现这一点。

1. 你按下 button1，然后将一个 BOOL 值 buttonOne 设置为 YES，然后你展示了选择器，你选择了图像，为了显示图像，你只需在方法 didFinishPickingImage 中检查按钮是否被选中，所以：

         if(buttonOne)
          {  
                 //set the image view 1 image
          }
   

您对所有四个图像视图执行相同的操作：

             if(buttonOne)
           {  
                  //set the image view 1 image
           }
            if(buttonTwo)
           {  
                  //set the image view 2 image
           } if(buttonThree)
           {  
                  //set the image view 3 image
           } if(buttonFour)
           {  
                  //set the image view 4 image
           }

当您将一个值设置为 YES 时，确保将其他 3 个布尔值设置为 NO。