Question

希望你们一切顺利。想知道是否有人能帮助我理解为什么Xcode不能和我玩得很好....

我已将代码分解为以下部分，以便我可以从UIImagePicker中选择个人资料照片：

工作：为ImagePicker和amp;分配委托类。 NavigationController
工作：实例化UIImagePicker变量
工作：加载ImagePickerViewController并启用选择图像
失败：使用UIImagePicker添加了关闭和完成拾取的附加功能，但都没有被调用？我做错了什么？

提前致谢！

class ProfileVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var imagePicker: UIImagePickerController!

override func viewDidLoad() {
    super.viewDidLoad()

    imagePicker = UIImagePickerController()
    imagePicker.delegate = self
}

@IBAction func selectPhotoPressed(sender: UITapGestureRecognizer) {
    if UIImagePickerController.isSourceTypeAvailable(.PhotoLibrary) {
        self.imagePicker.sourceType = .PhotoLibrary
    } else {
        self.imagePicker.sourceType = .Camera
    }
    imagePicker.allowsEditing = true
    imagePicker.mediaTypes = [kUTTypeImage as String]
    self.presentViewController(imagePicker, animated: true, completion: nil)
}

func imagePickerControllerDidCancel(picker: UIImagePickerController) {
    self.dismissViewControllerAnimated(true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo image: UIImage, editingInfo: [String : AnyObject]?) {
    headerView.profilePhoto.contentMode = .ScaleAspectFill
    headerView.profilePhoto.image = image
    imagePicker.dismissViewControllerAnimated(true, completion: nil)
    uploadImage(image)
}

Answer 1

好吧，我似乎现在正在使用它，感谢您帮助确定代码是古老的;）以下是现在运行的内容：

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    let image = info[UIImagePickerControllerOriginalImage] as? UIImage
    headerView.profilePhoto.contentMode = .ScaleAspectFit
    headerView.profilePhoto.image = image
    imagePicker.dismissViewControllerAnimated(true, completion: nil)
    uploadImage(image!)
}

Answer 2

您的签名有误，但由于它是一种可选方法，因此您不会收到警告。它应该是：

func imagePickerController(picker: UIImagePickerController,
          didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    // Your code
}

Answer 3

正如大家所建议的那样，使用didfinishpickingmediawithinfo方法并在swift 3，ios 10中提取图像，使用信息词典

func imagePickerController(picker: UIImagePickerController,
          didFinishPickingMediaWithInfo info: [String : AnyObject]) 
{
    imageView.image =  info[UIImagePickerControllerOriginalImage] as? UIImage
}

UIImagePickerController：didFinishPickingMediaWithInfo未被调用

3 个答案: