更改NavigationItem标题大小

Question

我把标题放在一个nevegationItem中：

let navigationItem = UINavigationItem()
navigationItem.title = "Title"
navigationBar.items = [navigationItem]

这很完美..。但。

我如何改变标题文本的大小..？

Answer 1

在导航栏…中设置字体

let font = UIFont(name: "Helvetica", size: 22)!
UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName: font]

Answer 2

Swift 4.2

更改大标题

self.navigationController!.navigationBar.largeTitleTextAttributes = [.font: UIFont.systemFont(ofSize: 22)]

在布局向下滚动时更改小标题

self.navigationController!.navigationBar.titleTextAttributes = [.font: UIFont.systemFont(ofSize: 14)]

Answer 3

使用字体属性更改标题字体

self.navigationController.navigationBar.titleTextAttributes = [ NSFontAttributeName: UIFont(name: "CaviarDreams", size: 20)!]

发现：How do i change navigationBar font in Swift?