ios - 来自 FBSDK xcode swift 的圆形 UIImage

Question

我有一张个人资料图片，是从 Facebook 图形请求的 URL 中获取的，我试图将其制作成圆形个人资料图片，但它看起来像这样:

我不希望它指向顶部，我只想要一个完美的圆。

这是我的代码:

  @IBOutlet var imageURL: UIImageView!

 func returnUserData()
    {
        let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: ["fields":"id,email,name,picture.width(50).height(50)"])
        graphRequest.startWithCompletionHandler({ (connection, result, error) -> Void in

            if ((error) != nil)
            {
                // Process error
                print("Error: \(error)")
            }
            else
            {
                print("fetched user: \(result)")
                let userID : NSString = result.valueForKey("id") as! NSString
                let userName : NSString = result.valueForKey("name") as! NSString
                print("User Name is: \(userName)")
                let userEmail : NSString = result.valueForKey("email") as! NSString
                print("User Email is: \(userEmail)")

                let facebookProfileUrl = "https://graph.facebook.com/\(userID)/picture?type=large"

                print("\(facebookProfileUrl)")

                let url = NSURL(string:facebookProfileUrl)
                let data = NSData(contentsOfURL:url!)
                if data == nil {

                } else {
                    self.imageURL.layer.borderWidth=1.0
                    self.imageURL.layer.masksToBounds = false
                    self.imageURL.layer.borderColor = UIColor.whiteColor().CGColor
                    self.imageURL.layer.cornerRadius = 15
                    self.imageURL.layer.cornerRadius = self.imageURL.frame.size.height/2
                    self.imageURL.clipsToBounds = true
                    self.imageURL.image = UIImage(data:data!)
                }
            }
        })
    }

Answer 1

显然您的输入图像不是方形的。裁剪顶部和底部(或延伸侧面)使其成为正方形，然后其余部分就可以了。