Question

我正在开发一个应用程序，我刚升级到Xcode 9 / Swift 4，并将我的iPhone升级到iOS 11。安装iOS 11时安装了应用程序，直到我从Xcode运行它之前一切正常。现在我陷入了默认的NavBar高度。

我用来更改高度的代码不再有效：

class CustomNavControllerVC: UINavigationController
{
    let navBarHeight : CGFloat = 64.0
    let navbarBackButtonColor = UIColor(red: 247/255, green: 179/255, blue: 20/255, alpha: 1)

    override func viewDidLoad()
    {
        super.viewDidLoad()

        print("CustomNavControllerVC > viewDidLoad")
    }

    override func viewDidLayoutSubviews()
    {
        print("CustomNavControllerVC > viewDidLayoutSubviews")

        super.viewDidLayoutSubviews()

        navigationBar.frame.size.height = navBarHeight
        navigationBar.tintColor = navbarBackButtonColor
    }

    override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}


// In my VCs

override func viewDidLoad()
{
    customizeNavBar()
}


func customizeNavBar()
{
    let navbarBackItem = UIBarButtonItem()
    navbarBackItem.title = "Înapoi"
    navigationItem.backBarButtonItem = navbarBackItem

    let navbarImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 55, height: 20))
    navbarImageView.contentMode = .scaleToFill

    let navbarLogo = UIImage(named: "NavBarLogo.png")
    navbarImageView.image = navbarLogo

    navigationItem.titleView = navbarImageView
}

到目前为止，我在这个问题上唯一能找到的是：

iOS 11 navigation bar height customizing

iOS11 customize navigation bar height

How to correctly set UINavigationBar height in iOS 11

但不幸的是，所提供的信息无济于事。

有任何想法/建议吗？

Answer 1

更新2017.10.6

我遇到了同样的问题。以下是我的解决方案。我认为身高是66.

我的解决方案在iOS 10,11上运行良好。

如果有帮助，请选择我的答案。

创建NavgationBar.swift

$search = $_POST['dname'];
$search = str_replace(' ', '%', $search);

$query = "SELECT * FROM yourTable WHERE col1 LIKE '%{$search}%' OR col2 LIKE '%{$search}%' ";

设置故事板

设置自定义NavigationBar类

添加TestView +设置SafeArea

ViewController.swift

import UIKit

class NavigationBar: UINavigationBar {

    //set NavigationBar's height
    var customHeight : CGFloat = 66

    override func sizeThatFits(_ size: CGSize) -> CGSize {

        return CGSize(width: UIScreen.main.bounds.width, height: customHeight)

    }

    override func layoutSubviews() {
        super.layoutSubviews()

        frame = CGRect(x: frame.origin.x, y:  0, width: frame.size.width, height: customHeight)

        // title position (statusbar height / 2)
        setTitleVerticalPositionAdjustment(-10, for: UIBarMetrics.default)

        for subview in self.subviews {
            var stringFromClass = NSStringFromClass(subview.classForCoder)
            if stringFromClass.contains("BarBackground") {
                subview.frame = CGRect(x: 0, y: 0, width: self.frame.width, height: customHeight)
                subview.backgroundColor = .yellow

            }

            stringFromClass = NSStringFromClass(subview.classForCoder)
            if stringFromClass.contains("BarContent") {

                subview.frame = CGRect(x: subview.frame.origin.x, y: 20, width: subview.frame.width, height: customHeight - 20)

                subview.backgroundColor = UIColor(red: 20/255, green: 20/255, blue: 20/255, alpha: 0.4)

            }
        }
    }


}

SecondViewController.swift

import UIKit

class ViewController: UIViewController {

    var navbar : UINavigationBar!

    @IBOutlet weak var testView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()

        //update NavigationBar's frame
        self.navigationController?.navigationBar.sizeToFit()
        print("NavigationBar Frame : \(String(describing: self.navigationController!.navigationBar.frame))")

    }

    //Hide Statusbar
    override var prefersStatusBarHidden: Bool {

        return true
    }

    override func viewDidAppear(_ animated: Bool) {

        super.viewDidAppear(false)

        //Important!
        if #available(iOS 11.0, *) {

            //Default NavigationBar Height is 44. Custom NavigationBar Height is 66. So We should set additionalSafeAreaInsets to 66-44 = 22
            self.additionalSafeAreaInsets.top = 22

        }

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

黄色是barbackgroundView。黑色不透明度是BarContentView。

我删除了BarContentView的backgroundColor。

就是这样。

iOS 11 - 无法更改导航栏高度

1 个答案: