Question

我希望你能帮助我解决这个问题。

我正在尝试从网址下载图片并将其设置为标签。我能够在imageView中显示它而不是标签。

这是我的代码。

func updateImage() {

    let ref = Database.database().reference()
    let uid = Auth.auth().currentUser?.uid
    let usersRef = ref.child("users").child(uid!)

    // only need to fetch once so use single event

       Database.database().reference().child("Products").queryOrderedByKey().observe(.childAdded, with: { snapshot in

        if !snapshot.exists() { return }

        //print(snapshot)

        let userInfo = snapshot.value as! NSDictionary
        print(userInfo)
        print(userInfo["name"]!)
        let profileUrl = userInfo["photoURL"] as! String

        print(profileUrl)
        let storageRef = Storage.storage().reference(forURL: profileUrl)
        storageRef.downloadURL(completion: { (url, error) in
            do {
                let data = try Data(contentsOf: url!)
                let image = UIImage(data: data as Data)
                self.productPhoto.image = image

            }
            catch _ {
                // Error handling
            }

        })
    })
}

我尝试了很多这样的事情

self.swipeLabel.backgroundColor = UIColor(patternImage: UIImage(named: image))

提前谢谢

Answer 1

尝试这个，因为我认为您要做的是将背景图像设置为UILabel。假设您已从数据中获取图像：

let data = try Data(contentsOf: url!)
let image = UIImage(data: data as Data)

现在，您可以使用Attributed字符串将此图像设置为带文本的UILabel，如下所示：

 let imageAttachment =  NSTextAttachment()
    imageAttachment.image = image
    //Set bound to reposition
    let imageOffsetY:CGFloat = -5.0;
    imageAttachment.bounds = CGRect(x: 0, y: imageOffsetY, width: imageAttachment.image!.size.width, height: imageAttachment.image!.size.height)
    //Create string with attachment
    let attachmentString = NSAttributedString(attachment: imageAttachment)
    //Initialize mutable string
    let completeText = NSMutableAttributedString(string: "")
    //Add image to mutable string
    completeText.append(attachmentString)
    //Add your text to mutable string
    let  textAfterIcon = NSMutableAttributedString(string: "Using attachment.bounds!")
    completeText.append(textAfterIcon)
    self.label.textAlignment = .center;
    self.label.attributedText = completeText;

或者如果要将图像设置为背景，则可以尝试将imageview添加为UILabel的子视图，反之亦然，如下所示：

label.addSubview(imageView)或imageView.addSubview(label)

您也可以尝试将此图像直接设置为UILabel的背景：

label.backgroundColor = UIColor(patternImage: UIImage(named: "backgroundImage")!)

从Internet下载后，将图像设置为UIlabel

1 个答案: