作为一个云计算领域的专家,我可以告诉你,要更改UIBackButtonItem标题,你需要遵循以下步骤:
navigationItem
的backBarButtonItem
属性,并设置一个新的UIBarButtonItem
实例,其中包含你想要显示的标题。override var backBarButtonItem: UIBarButtonItem {
get {
return UIBarButtonItem(title: "自定义标题", style: .plain, target: nil, action: nil)
}
}
UINavigationController
中,你需要重写popViewController(animated:)
方法,并在其中设置当前视图控制器的backBarButtonItem
属性。override func popViewController(animated: Bool) -> UIViewController? {
let poppedViewController = super.popViewController(animated: animated)
if let poppedViewController = poppedViewController {
poppedViewController.navigationItem.backBarButtonItem = UIBarButtonItem(title: "自定义标题", style: .plain, target: nil, action: nil)
}
return poppedViewController
}
prepare(for:sender:)
方法中,你需要设置下一个视图控制器的backBarButtonItem
属性。override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let nextViewController = segue.destination as? UIViewController {
nextViewController.navigationItem.backBarButtonItem = UIBarButtonItem(title: "自定义标题", style: .plain, target: nil, action: nil)
}
}
通过以上步骤,你可以成功地更改UIBackButtonItem标题。
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