问题描述
我正在努力了解它是如何工作的，但对我来说这很难。 =）
我有1个视图，有一个按钮和一个小的ImageView区域可供预览。
按钮触发imagepickercontroller，UIView将显示选中的图像。
没有错误但是图像没有显示在UIImageView区域中。
I am trying hard to understand how this works, but it's pretty hard for me. =)I have 1 view, there is one button and one small ImageView area for preview.The button triggers imagepickercontroller, and the UIView will display picked image.There is no error but the image doesn't show in the UIImageView area.
var imagePicker = UIImagePickerController()
@IBOutlet var imagePreview : UIImageView
@IBAction func AddImageButton(sender : AnyObject) {
imagePicker.modalPresentationStyle = UIModalPresentationStyle.CurrentContext
imagePicker.delegate = self
self.presentModalViewController(imagePicker, animated: true)
}
func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info:NSDictionary!) {
var tempImage:UIImage = info[UIImagePickerControllerOriginalImage] as UIImage
imagePreview.image = tempImage
self.dismissModalViewControllerAnimated(true)
}
func imagePickerControllerDidCancel(picker: UIImagePickerController!) {
self.dismissModalViewControllerAnimated(true)
}
推荐答案
你抓了 UIImage 名为 UIImagePickerControll erOriginalImage 并且没有这样的图像。您打算从 editingInfo UIImagePickerControllerOriginalImage 键获取 UIImage c $ c>字典：
You're grabbing a UIImage named UIImagePickerControllerOriginalImage and there exists no such image. You're meant to grab the UIImage with the key UIImagePickerControllerOriginalImage from the editingInfo dictionary:
let tempImage = editingInfo[UIImagePickerControllerOriginalImage] as! UIImage
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