下拉菜单标题重叠与酒吧按钮 - 斯威夫特

Question

我有long data modules title重叠与右边的按钮。这是标题不重叠的short data module title。

对于长期数据模块，我会想新建一个换行符去到下一行并显示它有那么它不会重叠

在我的代码我已经设置MaskIntoConstrains为false，还有什么需要完成此功能的工作？

代码：

func createDropDownMenu() { 

    // create the drop down menu 
    let title = prepareNavigationBarMenuTitleView() 
    prepareNavigationBarMenu(title) 
    updateMenuContentOffsets() 

} 

func prepareNavigationBarMenuTitleView() -> String { 

    // Both title label and image view are fixed horizontally inside title 
    // view, UIKit is responsible to center title view in the navigation bar. 
    // We want to ensure the space between title and image remains constant, 
    // even when title view is moved to remain centered (but never resized). 
    titleView = DropDownTitleView(frame: CGRect(x: 0, y: 0, width: 150, height: 40)) 
    titleView.addTarget(self, 
         action: #selector(DocumentViewController.willToggleNavigationBarMenu(_:)), 
         for: .touchUpInside) 
    titleView.addTarget(self, 
         action: #selector(DocumentViewController.didToggleNavigationBarMenu(_:)), 
         for: .valueChanged) 

    titleView.titleLabel.textAlignment = .left 
    titleView.titleLabel.textColor = UIColor.black 
    titleView.titleLabel.translatesAutoresizingMaskIntoConstraints = false 
    titleView.title = currentNode.title 
    navigationItem.titleView = titleView 
    return titleView.title! 
} 

Answer 1

你不设置的Titlelabel帧，设置其框架与集numberofLines = 0一起将解决您的问题。

下面是代码：

titleView.titleLabel.frame = CGRect(x: 0, y: 0, width: 600, height: 80) 
titleView.numberOfLines = 0 
//Important one 
titleView.titleLabel.text = currentNode.title 

这将解决您的问题。享受编码。