ios - 未在自定义 UIButton 上设置图像

Question

所以我试图在我的应用程序中创建一个圆形导航栏按钮来保存用户图像。我采用了 UIButton 子类化并创建自己的自定义类的路线。

除了我尝试抓取图像的部分之外，一切都很好。我使用 alamofire 根据从 firebase 获取的 URL 获取图像，但按钮是蓝色的？没有图像

我的代码是否做错了什么

import UIKit
import Firebase
import AlamofireImage
import Alamofire

class CircularNavButton: UIButton {
    var userHandle: DatabaseHandle = 0
    var userRef: DatabaseReference?


    override init(frame: CGRect) {
        super.init(frame: frame)
        setupView()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    @objc func setupView(){
        observeUser()
    }


    @objc func observeUser(){
        self.userHandle = UserService.observeProfile(for: User.current, completion: { (userRef, user, nil) in
            self.userRef = userRef
            guard let userProfilePic = user?.profilePic else{
                return
            }
            Alamofire.request(userProfilePic).responseImage { response in
                debugPrint(response)
                if let image = response.result.value {
                    self.setImage(image, for: .normal)
                    print("image downloaded: \(image)")
                }
            }
        })
    }

    deinit {
        userRef?.removeObserver(withHandle: userHandle)

    }

}

下面是我将其添加到导航栏时的初始化

 @objc func setupCircularNavButton(){
    let image = #imageLiteral(resourceName: "sports").withRenderingMode(.alwaysOriginal)

    let customView = CircularNavButton(type: .system)
    customView.addTarget(self, action: #selector(showMenu), for: .touchUpInside)
    customView.imageView?.contentMode = .scaleToFill

    customView.layer.cornerRadius = 15
    customView.clipsToBounds = true

    customView.widthAnchor.constraint(equalToConstant: 30).isActive = true
    customView.heightAnchor.constraint(equalToConstant: 30).isActive = true

    let barButtonItem = UIBarButtonItem(customView: customView)
    navigationItem.rightBarButtonItems?.insert(barButtonItem, at: 0)
}

Answer 1

因此，当我像这样初始化按钮时，我可以通过将按钮类型设置为自定义来解决此问题

    let customView = CircularNavButton(type: .custom)