qlpreviewcontroller 导航栏 - 如何将 pageCount 更改为字符串

Question

QLPreviewController navigationBar 标题显示当前页码，如第 2 页，共 6 页，但我想将此标题更改为任何字符串，如当前文件名。

Answer 1

试试这个

        let lblNavTitle = UILabel(frame: CGRect(x: 60, y: 10, width: view.frame.size.width-110, height: 20))
        lblNavTitle?.textAlignment = .center
        lblNavTitle?.lineBreakMode = .byTruncatingMiddle
        lblNavTitle?.text = "File Name"
        navigationItem.titleView = lblNavTitle

或

只需将标题属性设置为

self.title = "File Name"

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