如何从UIImagePickerController正确复制图像？

Question

从article开始，我正在学习图片/从库中选择，并将结果放在UIImageView中。

@IBOutlet var theImage: UIImageView!;

@IBAction func openLibrary (sender: UIButton) {
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary;
        imagePicker.allowsEditing = true
        self.presentViewController(imagePicker, animated: true, completion: nil)
    }
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) {
    theImage.image = image;
    self.dismissViewControllerAnimated(true, completion: nil);
}

结果如下：

在点击库中选择之前

选择图像时

图像选择器结果

像裁剪的图像，即使我已将模式设置为Aspect Fit。怎么了？

编辑：

缩放以适应？这就是我在图像模式中的全部内容：