如何解决当前 UIViewController 未完全显示
从 UITabBarViewController~>RootViewController 呈现 UIViewController。
let uploadViewController = UIStoryboard.identifier(.Home).instantiateViewController(identifier: "UploadViewController") as! UploadViewController
let navigationController = UINavigationController(rootViewController: uploadViewController)
navigationController.modalPresentationStyle = .overFullScreen
navigationController.statusBar(colour: .ThemeColor)
self.present(navigationController,animated: false,completion: nil)
//上传视图控制器
override func viewDidLoad() {
super.viewDidLoad()
self.addCrossAction()
setTitle(text: "Upload")
// Do any additional setup after loading the view.
}
func addCrossAction(){
navigationController?.navigationBar.backgroundColor = .ThemeColor
navigationController?.isNavigationBarHidden = false
navigationController?.navigationBar.hide_NavigationBar_BottonLine()
let button = UIButton(frame: CGRect(x: 0,y: 0,width: 30,height: 30))
button.setimage(UIImage(named: "crossButtonWhite"),for: .normal)
button.addTarget(self,action: #selector(crossButtonClicked),for: .touchUpInside)
navigationItem.leftBarButtonItem = UIBarButtonItem(customView: button)
}
观察到 NavigationBar 未完成显示..
请在下面找到图片。
如何拥有完整的蓝色 .ThemeColor NavigationBar。
解决方法
代替:
navigationController?.navigationBar.backgroundColor = .ThemeColor
试试:
UINavigationBar.appearance().barTintColor = .ThemeColor
或(iOS >13):
UINavigationBarAppearance().backgroundColor = .ThemeColor
,
如果你想要大标题的总蓝色条
navigationController?.navigationBar.prefersLargeTitles = true
navigationItem.largeTitleDisplayMode = .always
否则,在表格视图顶部设置一个带有 ThemeColor 背景的虚拟视图,并将表格锚定到虚拟视图底部,然后分配给您的导航栏背景颜色以清除。
声明你的 dummyView:
let dummyView = UIView()
在 viewDidLoad 中:
dummyView.backgroundColor = .ThemeColor
dummyView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(dummyView)
dummyView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
dummyView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
dummyView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
dummyView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
之后将 tableView 顶部约束分配给 dummyView 底部约束... 如果您搜索扩展程序以编程方式设置导航栏,请查看我的 https://stackoverflow.com/a/58361273/5575955
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