Ios 解析配置文件图像故障

这是我的密码：

@IBAction func setPicture(sender: UIButton) {
    var imagePicker: UIImagePickerController = UIImagePickerController()
    imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    imagePicker.delegate = self

    let profileImage: PFFile = user["profileImage"] as! PFFile

    profileImage.getDataInBackgroundWithBlock {
    (imageData: NSData?, error: NSError?) -> Void in

    if error == nil {
    let image: UIImage = UIImage(data: imageData!)!
    self.profileImageView.image = image
        }
    }


    self.presentViewController(imagePicker, animated: true, completion: nil)
}

---

错误出现在let profileImage:PFFile=user[“profileImage”]行上。由于用户的原因，它无法生成。谢谢你的帮助

我想这可能对你有用

@IBAction func setPicture(sender: UIButton) {
    var imagePicker: UIImagePickerController = UIImagePickerController()
    imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
imagePicker.delegate = self

    //getting the current user
    var user = PFUser.currentUser();

    let profileImage: PFFile = user["profileImage"] as! PFFile

    profileImage.getDataInBackgroundWithBlock {
    (imageData: NSData?, error: NSError?) -> Void in

      if error == nil {
        let image: UIImage = UIImage(data: imageData!)!
        self.profileImageView.image = image
      }
    }

    self.presentViewController(imagePicker, animated: true, completion: nil)
}