Question

我正在构建一个应用程序，允许用户将三张图片添加到三个UIImageViews 我添加了三个按钮，例如，当用户点击按钮1时，他应该能够将图像添加到UIImageView 1 但是图像没有来到UIImageView，我找不到任何解决方案

代码示例：

 @IBAction func imageOneBtn(sender: AnyObject) {
        picker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        picker.delegate = self
        picker.allowsEditing = false
        self.presentViewController(picker, animated: true, completion: nil)

        func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]){
            let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage
            imageViewOne.image = selectedImage
            imageViewOne.contentMode = UIViewContentMode.ScaleAspectFit
            picker.dismissViewControllerAnimated(true, completion: nil)
        }
    }

提前谢谢

Answer 1

代码似乎是正确的。

let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage

尝试删除感叹号（！）。

尝试使用imageViewOne.contentMode = .ScaleAspectFit

同时尝试使用var代替let selectedImage

一般情况下试试此代码

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
var selectedImage = info[UIImagePickerControllerOriginalImage] as UIImage
imageViewOne.contentMode = .ScaleAspectFit
imageViewOne.image = selectedImage
dismissViewControllerAnimated(true, completion: nil)
}

Answer 2

我已经解决了我的问题，这是任何想要使用它的人的答案

   import UIKit

 class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate  {


@IBOutlet weak var oneImg: UIImageView!
@IBOutlet weak var twoImg: UIImageView!
@IBOutlet weak var threeImg: UIImageView!

var num=0;

func config() {
    let imagePickerController = UIImagePickerController()
    imagePickerController.delegate = self
    imagePickerController.allowsEditing = true
    imagePickerController.sourceType = .PhotoLibrary
    presentViewController(imagePickerController, animated: true, completion: nil)
 }

 @IBAction func oneBtn(sender: AnyObject) {
    num = 1
    config()
 }


 @IBAction func twoBtn(sender: AnyObject) {
    num = 2
    config()
 }


 @IBAction func threeBtn(sender: AnyObject) {
    num = 3
    config()
 }


 func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]){
    let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage;

    if num == 1 {  // switch can be used here
        oneImg.image = selectedImage;
     } else if (num == 2) {
        twoImg.image = selectedImage
     } else if (num == 3) {
        threeImg.image = selectedImage
     }
     picker.dismissViewControllerAnimated(true, completion: nil)
}

}

使用图像选择器的三个图像

2 个答案: