iOS 11导航栏中大标题的多行显示11
问题描述:
iOS 11中导航栏的新大标题显示多行是否可能? App Store应用程序执行此操作,但在当前文档中找不到任何内容来执行此操作。如果标准行为太长,则只显示一行带省略号的行。iOS 11导航栏中大标题的多行显示11
答
添加以下代码viewWillAppear中:
navigationController?.navigationBar.prefersLargeTitles = true
self.navigationController?.navigationItem.largeTitleDisplayMode = .automatic
self.title = "Hello big text, For navigation large style bar"
navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.black, NSAttributedStringKey.font : UIFont.preferredFont(forTextStyle: .largeTitle)]
var count = 0
for item in(self.navigationController?.navigationBar.subviews)! {
for sub in item.subviews{
if sub is UILabel{
if count == 1 {
break;
}
let titleLab :UILabel = sub as! UILabel
titleLab.numberOfLines = 0
titleLab.text = self.title
titleLab.lineBreakMode = .byWordWrapping
count = count + 1
}
}
}
self.navigationController?.navigationBar.layoutSubviews()
self.navigationController?.navigationBar.layoutIfNeeded()
面对与后退按钮将很快更新问题..
你收到这方面的任何解决方案? –