从照片库中拍摄照片或选择照片后，UIImageView不会使用新图像更新 [英] UIImageView not updating with new image after picture taken or picture chosen from photo library

问题描述

拍照或从照片库中选择图片后，我试图在UIImageView中填充图像.

I'm trying to populate an image within a UIImageView after I either take a picture or choose a picture from my photo library.

以下是处理相机和照片库激活的代码:

here is the code handling the camera and photo library activations:

@IBAction func activateCmera(_ sender: Any) {
    if (UIImagePickerController.isSourceTypeAvailable(.camera)) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = .camera
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
    }
}


@IBAction func activatePhotoLib(_ sender: Any) {
    if (UIImagePickerController.isSourceTypeAvailable(.photoLibrary)) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = .photoLibrary
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
    }
}

以下是在UIImageView中填充图像的代码:

Here is the code that populates the image within the UIImageView:

@IBOutlet weak var imageView: UIImageView!

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    let image = info[UIImagePickerControllerOriginalImage] as! UIImage
    self.imageView.contentMode = .scaleAspectFit
    self.imageView.image = image
    self.dismiss(animated: true, completion: nil);
}

目前，当我用相机拍摄照片或从照片库中选择图像后，我被重定向到应用的初始视图，而没有用照片更新UIImageView空间.

currently after I take a picture with my camera or choose an image from my photo library, I'm redirected to the initial view of the app without UIImageView space updated with the photo.

感谢您的帮助！

推荐答案

在Swift 3中，您需要通过在keys下方添加plist来访问photoLibrary，并且需要使用适当的delegate方法.

In Swift 3 you need permission to access photoLibrary by adding below keys to your plist and you need to use the proper delegate method.

添加UIImagePickerControllerDelegate& UINavigationControllerDelegate设置为class并将imagePicker delegate设置为viewDidLoad&尝试下面的代码.

Add UIImagePickerControllerDelegate& UINavigationControllerDelegate to your classand set imagePicker delegate to viewDidLoad & Try below code.

    let imagePicker = UIImagePickerController()

    @IBAction func activatePhotoLib(_ sender: UIButton) { 
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary;
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
       } 
     }

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imageView.image = image
     }
    picker.dismiss(animated: true, completion: nil);
    }

输出:updated

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