ios - 解析个人资料图片出现问题

这是我的代码：

@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)
}

错误在let profileImage：PFFile = user [“ profileImage”]行上。它不会因为用户而建立。帮助赞赏！

最佳答案

我认为这可能对您有用。

@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)
}