我试图设置一个导航栏标题,但到目前为止我尝试过的每种方法都将标题移动得太远或视图根本没有加载并导致应用程序崩溃。这是我最近的尝试(app崩溃)
let rightItemSize = self.navigationItem.rightBarButtonItem?.width
let leftItemSize = self.navigationItem.leftBarButtonItem?.width
let navWidth = self.navigationController?.navigationBar.frame.size.width
let navHeight = self.navigationController?.navigationBar.frame.size.height
let titleWidth = navWidth! - (rightItemSize! + leftItemSize!)
let requiredPadding = rightItemSize! - leftItemSize!
var titleViewToAdd = UIView(frame: CGRectMake(0, 0, titleWidth, navHeight!))
var label = UILabel(frame: CGRectMake(requiredPadding, 0, titleWidth - requiredPadding, navHeight!))
label.backgroundColor = UIColor.redColor()
label.font = UIFont.boldSystemFontOfSize(14.0)
label.textColor = UIColor.blackColor()
label.numberOfLines = 1
label.textAlignment = NSTextAlignment.Center
label.text = "\(albumsArtist)"
titleViewToAdd.addSubview(label)
self.navigationItem.titleView = titleViewToAdd
如果我使用self.navigationItem.title =" \(albumsArtist)"。文本居中并且效果很好但最终我想要有两行文本,这种方法不起作用。
我知道这里有类似的问题和答案,但我所看到的所有问题都是针对Objective-C的,当我试图将它们转换为Swift时,效果并不好。
非常感谢!
答案 0 :(得分:3)
管理以使其适用于此!
let label = UILabel(frame: CGRect(x: 10, y: 0, width: 50, height: 40))
label.backgroundColor = .red
label.font = UIFont.boldSystemFont(ofSize: 14)
label.text = "My title"
label.numberOfLines = 2
label.textColor = .black
label.sizeToFit()
label.textAlignment = .center
self.navigationItem.titleView = label