我有一个应用程序,有时需要它的导航栏融入内容。
有人知道怎么去掉或者改变这个烦人的小条的颜色吗?
在下图中,我说的是根视图控制器下面1px的高度线
我有一个应用程序,有时需要它的导航栏融入内容。
有人知道怎么去掉或者改变这个烦人的小条的颜色吗?
在下图中,我说的是根视图控制器下面1px的高度线
当前回答
编写自己的初始化式:D
import Foundation
import UIKit
extension UINavigationController {
convenience init(rootViewController : UIViewController, hidesShadow : Bool) {
self.init(rootViewController : rootViewController)
self.navigationBar.setValue(hidesShadow, forKey: "hidesShadow")
if hidesShadow {
self.extendedLayoutIncludesOpaqueBars = true
self.navigationBar.isTranslucent = false
}
}
}
其他回答
适用于iOS 13+
窍门是用透明背景初始化'UINavigationBarAppearance'。然后,您可以轻松地删除导航栏的水平线。
let appearance = UINavigationBarAppearance()
appearance.configureWithTransparentBackground()
appearance.backgroundColor = .green // Required background color
最后,按照apple的建议将外观更改添加到导航项中。
self.navigationItem.standardAppearance = appearance
self.navigationItem.scrollEdgeAppearance = appearance
self.navigationItem.compactAppearance = appearance
简单的解决方案- Swift 5
Create an extension: extension UIImage { class func hideNavBarLine(color: UIColor) -> UIImage? { let rect = CGRect(x: 0, y: 0, width: 1, height: 1) UIGraphicsBeginImageContext(rect.size) let context = UIGraphicsGetCurrentContext() context?.setFillColor(color.cgColor) context?.fill(rect) let navBarLine = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() return navBarLine } } Add this to viewDidLoad(): self.navigationController?.navigationBar.shadowImage = UIImage.hideNavBarLine(color: UIColor.clear)
在子视图中找到发际线的一个很好的简短Swift函数是:
func findHairLineInImageViewUnder(view view: UIView) -> UIImageView? {
if let hairLineView = view as? UIImageView where hairLineView.bounds.size.height <= 1.0 {
return hairLineView
}
if let hairLineView = view.subviews.flatMap({self.findHairLineInImageViewUnder(view: $0)}).first {
return hairLineView
}
return nil
}
嗨,这适用于Swift 4。
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.isTranslucent = false
}
你需要把这个放在viewDidLayoutSubviews而不是viewDidLoad
我的方法:
UINavigationBar.appearance().setBackgroundImage(
UIImage(),
forBarPosition: .Any,
barMetrics: .Default)
var _width:CGFloat! = self.navigationController?.navigationBar.layer.frame.width
var _height:CGFloat! = self.navigationController?.navigationBar.layer.frame.height
var navBarBg = UIView(frame:CGRectMake(0, 0, _width, _height))
//solid color for bg
navBarBg.backgroundColor = UIColor.orangeColor()
view.addSubview(navBarBg)