Question

我有一个搜索控制器，当点击时会显示一个collectionViewController，它具有不同的外观，具体取决于您是登录用户还是我搜索过的用户。这是处理呈现用户的代码

 weak var searchProfileViewController: SearchProfileeViewController?

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    //        searchBar.isHidden = true
    //        searchBar.resignFirstResponder()
    switch scopeIndex {
    case 0:
        let event = filteredEvents[indexPath.item]
        currentEventDetailController.eventKey = event.key!
        currentEventDetailController.eventPromo = event.currentEventPromo!
        currentEventDetailController.currentEvent = event
        self.filteredEvents.removeAll()
        self.eventsArray.removeAll()
        self.collectionView?.reloadData()
        present(currentEventDetailController, animated: true, completion: nil)
        //  navigationController?.pushViewController(currentEventDetailController, animated: true)
        navigationController?.navigationBar.isHidden = false
        break
    case 1:
        //change needs to be made here
        navigationController?.navigationBar.isHidden = false
        let user = filteredUsers[indexPath.item]
       // print(user.username ?? "")
        userProfileController.user = user
        userProfileController.navigationItem.title = user.username
        userProfileController.navigationItem.hidesBackButton = true
        let backButton = UIBarButtonItem(image: UIImage(named: "icons8-Back-64"), style: .plain, target: self, action: #selector(GoBack))
        userProfileController.navigationItem.leftBarButtonItem = backButton
        var navController = UINavigationController(rootViewController: userProfileController)
        present(navController, animated: true, completion: nil)
        break
    default:
        break
    }

}

现在，当输入用户控制器时，使用下面的代码配置标题，其中有两种情况 1.如果您是当前登录的用户 2.如果您是我搜索过的用户

 fileprivate func setupUserInteraction (){
        guard let currentLoggedInUser = Auth.auth().currentUser?.uid else{
            return
        }
        guard let uid = user?.uid else{
            return
        }

        if currentLoggedInUser == uid {
            let userStackView = UIStackView(arrangedSubviews: [profileeSettings, settings])
            userStackView.distribution = .fillEqually
            userStackView.axis = .vertical
            userStackView.spacing = 10.0
            addSubview(userStackView)
            userStackView.anchor(top: topAnchor, left: leftAnchor, bottom: nil, right: nil, paddingTop: 0, paddingLeft: 15, paddingBottom: 0, paddingRight: 0, width: 0, height: 90)
            let bottomDividerView = UIView()
            bottomDividerView.backgroundColor = UIColor.lightGray
            addSubview(bottomDividerView)
             bottomDividerView.anchor(top: profileStackView.bottomAnchor, left: leftAnchor, bottom: nil, right: rightAnchor, paddingTop: 15, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0.5)

        } else{
            addSubview(followButton)
            followButton.anchor(top: profileStackView.bottomAnchor, left: leftAnchor, bottom: nil, right: rightAnchor, paddingTop: 10, paddingLeft: 50, paddingBottom:0 , paddingRight: 50, width: 0, height: 0)
            let bottomDividerView = UIView()
            bottomDividerView.backgroundColor = UIColor.lightGray
              addSubview(bottomDividerView)
             bottomDividerView.anchor(top: followButton.bottomAnchor, left: leftAnchor, bottom: nil, right: rightAnchor, paddingTop: 15, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0.5)
            // check if following
            Database.database().reference().child("following").child(currentLoggedInUser).child(uid).observeSingleEvent(of: .value, with: { (snapshot) in

                if let isFollowing = snapshot.value as? Int, isFollowing == 1 {

                    self.followButton.setTitle("Unfollow", for: .normal)

                } else {
                    self.setupFollowStyle()
                }

            }, withCancel: { (err) in
                print("Failed to check if following:", err)
            })

        }
    }

所以这就是问题所在。当我第一次根据这两种场景中的一种渲染适当的单元时，我会转到所呈现的控制器。然而，第二次我去那里它有来自旧标题的碎片，所以我的观点最终看起来像这样。它为当前登录用户呈现标题的位置以及我当前登录用户的情况。通过以下按钮和编辑配置文件按钮的外观可以看出

你可以看到的显然是错误的，因为作为当前登录的用户，我不应该自己跟随。此外，如果您转到另一个用户配置文件，您可以编辑有关它们的信息，这样一切都搞砸了

我添加的最后一件事是用户变量和相应的didSet方法

var user: User?{
    didSet {
        setupProfileImage()
        //  userNameLabel.text = user?.username
        setupUserInteraction()
    }
}

我感谢任何帮助

var header: UserProfileHeader?
override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
    header = (collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: headerID, for: indexPath) as! UserProfileHeader)
    header?.profileeSettings.addTarget(self, action: #selector(profileSettingsTapped), for: .touchUpInside)
    header?.searchProfileViewController = self
    header?.settings.addTarget(self, action: #selector(settingsButtonTapped), for: .touchUpInside)

    header?.user = self.user
    header?.backButton.addTarget(self, action: #selector(GoBack), for: .touchUpInside)
    return header!
}

用于登录用户个人资料的Pic

Answer 1

在第一段代码中，我不知道你持有userProfileController变量的位置。所以我猜测userProfileController是类或全局var。这意味着每次出现相同的控制器。

每次在

中添加子视图

setupUserInteraction（）

方法。但是没有removeFromSuperview方法。

collectionViewHeader未正确更改

1 个答案: