如何在 Swift 中使用三个按钮选择三个图像答案

【问题标题】：How to select Three images with three buttons in Swift如何在 Swift 中使用三个按钮选择三个图像
【发布时间】：2021-12-05 08:00:13
【问题描述】：

在我的屏幕上，我需要添加三个图像，因为我有三个单独的按钮

代码：这里 EasyImagePicker 是我的自定义图像选择器。但是如果我从图像选择器中选择任何一个图像，那么它会添加所有三个图像

class EditProfileImagesVC: UIViewController {
    
    private var imagePicker : EasyImagePicker?
    private var imagePicker1 : EasyImagePicker?
    private var imagePicker2 : EasyImagePicker?
    
    
    @IBOutlet weak var profilePicImage: UIImageView!
    @IBOutlet weak var leftProfilePicImg: UIImageView!
    @IBOutlet weak var rightProfilePicImg: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        imagePicker = EasyImagePicker(presentationController: self, delegate: self)
        imagePicker1 = EasyImagePicker(presentationController: self, delegate: self)
        imagePicker2 = EasyImagePicker(presentationController: self, delegate: self)
        
    }
    
    @IBAction func profilePicBtn(_ sender: UIButton) {
        imagePicker?.present(from: sender, mediaType: .images, onViewController: self)
    }
    
    @IBAction func leftProfileBtn(_ sender: UIButton) {
        imagePicker1?.present(from: sender, mediaType: .images, onViewController: self)
    }
    
    @IBAction func rightProfileBtn(_ sender: UIButton) {
        imagePicker2?.present(from: sender, mediaType: .images, onViewController: self)
    }
}

extension EditProfileImagesVC : EasyImagePickerDelegate{
    
    func didSelect(image: UIImage?, video: URL?, fileName: String?) {
        if let img = image{
            profilePicImage.image = img
        }
        if let img1 = image{
            leftProfilePicImg.image = img1
        }
        if let img2 = image{
            rightProfilePicImg.image = img2
        }
    }
}

如何使用 imagepicker 为三个图像选择三个不同的图像.. 请指导我

【问题讨论】：

标签： ios swift uiimage uiimagepickercontroller

【解决方案1】：

将选取器引用添加到 func didSelect(image: UIImage?, video: URL?, fileName: String?)

这样 func didSelect(picker: EaseImagePicker, image: UIImage?, video: URL?, fileName: String?)

从选择器调用它并引用自我 didSelect(picker: self, image: selectedImage, video: nil, fileName: nil)

func didSelect(picker: EaseImagePicker, image: UIImage?, video: URL?, fileName: String?) {
if let img = image{
    switch picker {
        case imagePicker:
            profilePicImage.image = img
        case imagePicker1:
            leftProfilePicImg.image = img
        case imagePicker2:
           rightProfilePicImg.image = img
        default:
            break
    }
}
}

【讨论】：

【解决方案2】：

原因是这里没有东西可以区分点击了哪个按钮，因此结果设置为所有图像视图

func didSelect(image: UIImage?, video: URL?, fileName: String?) {
    if let img = image{
        profilePicImage.image = img
    }
    if let img1 = image{
        leftProfilePicImg.image = img1
    }
    if let img2 = image{
        rightProfilePicImg.image = img2
    }
}

你需要

enum ImageChooser {
  case profile,left,right
}
class EditProfileImagesVC: UIViewController { 
    private var imagePicker : EasyImagePicker?
    @IBOutlet weak var profilePicImage: UIImageView!
    @IBOutlet weak var leftProfilePicImg: UIImageView!
    @IBOutlet weak var rightProfilePicImg: UIImageView!
    var chooser:ImageChooser = .profile
    override func viewDidLoad() {
        super.viewDidLoad()

        imagePicker = EasyImagePicker(presentationController: self, delegate: self)

    }

    @IBAction func profilePicBtn(_ sender: UIButton) {
        chooser = .profile
        imagePicker?.present(from: sender, mediaType: .images, onViewController: self)
    }

    @IBAction func leftProfileBtn(_ sender: UIButton) {
        chooser = .left
        imagePicker1?.present(from: sender, mediaType: .images, onViewController: self)
    }

    @IBAction func rightProfileBtn(_ sender: UIButton) {
        chooser = .right
        imagePicker2?.present(from: sender, mediaType: .images, onViewController: self)
    }
}


extension EditProfileImagesVC : EasyImagePickerDelegate{

    func didSelect(image: UIImage?, video: URL?, fileName: String?) {
        if let img = image {
            if chooser == .profile {
                profilePicImage.image = img
            }
            else
                if chooser == .left {
                    leftProfilePicImg.image = img
                }
                else
                    if chooser == .right {
                        rightProfilePicImg.image = img
                    }
        }
                 
    }
}

【讨论】：