更改contactsUI 'forNewContact‘swift的标题

Question

我正在使用联系人UI添加新的联系人与此代码

        let a = CNContact()
        let contactPickerViewController = CNContactViewController.init(forNewContact: a) // iOS Editor
        contactPickerViewController.delegate = self
        let nav = UINavigationController.init(rootViewController: contactPickerViewController)
        nav.title = "AppContact"
        self.present(nav, animated: true, completion: nil)

我想让导航栏的标题是"AppContact“，但它总是得到默认的”新联系人“。如何更改标题？

Answer 1

导航栏从当前位于导航堆栈顶部的UIViewController (在本例中为RootViewController )获取标题。而是更改该UIViewController的title属性

    let a = CNContact()
    let contactPickerViewController = CNContactViewController.init(forNewContact: a) // iOS Editor
    contactPickerViewController.delegate = self
    let nav = UINavigationController.init(rootViewController: contactPickerViewController)
    contactPickerViewController.title = "AppContact" //Using currently presented ViewController .title property.
    self.present(nav, animated: true, completion: nil)

这是从苹果提供的UIViewController类参考中对的title属性的讨论

讨论：

Set the title to a human-readable string that describes the view. If the view controller has a valid navigation item or tab-bar item, assigning a value to this property updates the title text those objects.

UIViewController标题文档的Link。