通过代码添加UIViews时重叠的问题

问题描述 投票:0回答:1

我希望有人可以帮助我:

我正在Xcode中构建一个应用程序,我通过代码添加了一些UIViews,我无法通过main.storyboard来实现,因为UIViews的数量,它取决于数据库有多少个字段。因此,如果数据库有20个字段,那么将有20个UIViews。这就是我所做的并且它运行良好,但是......这就是问题:UIViews与Main.storyboard中添加的其他对象重叠,并且当我尝试使用分段控件时,某些对象不起作用与他们互动。

那是我到目前为止的代码:

import UIKit  


class issuesScreen: UIViewController {  
    @IBOutlet weak var csViewLeading: NSLayoutConstraint!  
    var showingMenu=false  
    lazy var scrollView: UIScrollView = {  
        let view = UIScrollView()  
        view.translatesAutoresizingMaskIntoConstraints = false  
        view.contentSize.height = 2000  
        return view  
    }()  

    override func viewDidLoad() {  
        super.viewDidLoad()  
        view.addSubview(scrollView)  
        setupScrollView()  
    }  
    //Here is when I'm adding the views  
    func setupScrollView() {  
        scrollView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true  
        scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true  
        scrollView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true  
        scrollView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true  
        let firstView = UIView()  
        firstView.translatesAutoresizingMaskIntoConstraints = false  
        firstView.backgroundColor = .black  

        scrollView.addSubview(firstView)  

        firstView.centerXAnchor.constraint(equalTo: scrollView.centerXAnchor).isActive = true  
        firstView.topAnchor.constraint(equalTo: scrollView.topAnchor, constant: 40).isActive = true  
        firstView.widthAnchor.constraint(equalToConstant: 400).isActive = true  
        firstView.heightAnchor.constraint(equalToConstant: 180).isActive = true  

        let secondView = UIView()  
        secondView.translatesAutoresizingMaskIntoConstraints = false  
        secondView.backgroundColor = .white  
        scrollView.addSubview(secondView)  

        secondView.centerXAnchor.constraint(equalTo: scrollView.centerXAnchor).isActive = true  
        secondView.topAnchor.constraint(equalTo: scrollView.topAnchor, constant: 41).isActive = true  
        secondView.widthAnchor.constraint(equalToConstant: 398).isActive = true  
        secondView.heightAnchor.constraint(equalToConstant: 178).isActive = true  
    }  
    @IBAction func showBar(_ sender: UIBarButtonItem) {  
        if(showingMenu) {  
            csViewLeading.constant = -240  
        } else {  
            csViewLeading.constant = 0  
            UIView.animate(withDuration: 0.3, animations: {self.view.layoutIfNeeded()})  
        }  
        showingMenu= !showingMenu  
    }  
}

这是我测试应用程序时的结果:

,

灰色背景是侧边栏,正如您所看到的,它与UIView重叠。

我真的不知道为什么会发生这种情况的原因,而且,不要告诉我使用tableView,除非它可以获得自定义样式(这是它的样子):

ios swift uiview overlapping
1个回答
0
投票

绝对使用UITableView。当然,可以创建自定义设计 - 只需实现您可以根据需要设计的自定义UITableViewCell

即使您的解决方案正常工作,如果您有许多数据库条目,性能也会很糟糕。 UITableView做了很多优化,比如重用不可见的细胞。

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