我正在尝试完全使用代码创建iOS移动应用。这样做会导致我的自定义标签栏控制器具有自定义标签栏形状的问题。
My custom tab bar shape looks something along the lines of this
AppDelegate.swift:
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
window = UIWindow()
window.rootViewController = CustomTabBarController()
window?.makeKeyAndVisible()
return true
}
在我的自定义TabBarController中:
import UIKit
class CustomTabBarController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
setupCenterButton()
}
func setupCenterButton() {
let menuButton = UIButton(frame: CGRect(x: 0, y: 0, width: 64, height: 64))
var menuButtonFrame = menuButton.frame
menuButtonFrame.origin.y = view.bounds.height - menuButtonFrame.height - 48
menuButtonFrame.origin.x = view.bounds.width/2 - menuButtonFrame.size.width/2
menuButton.frame = menuButtonFrame
menuButton.clipsToBounds = true
menuButton.layer.cornerRadius = menuButtonFrame.height/2
view.addSubview(menuButton)
}
}
extension UITabBar {
open override func sizeThatFits(_ size: CGSize) -> CGSize {
return CGSize(width: size.width, height: 64)
}
}
还有我的自定义标签栏形状
import UIKit
class CustomizedTabBar: UITabBar {
private var shapeLayer: CALayer?
private func addShape() {
let shapeLayer = CAShapeLayer()
shapeLayer.path = createPath()
if let oldShapeLayer = self.shapeLayer {
self.layer.replaceSublayer(oldShapeLayer, with: shapeLayer)
} else {
self.layer.insertSublayer(shapeLayer, at: 0)
}
self.shapeLayer = shapeLayer
}
func createPath() -> CGPath {
let path = UIBezierPath()
path.move(to: CGPoint(x: 0, y: 0))
//..path moving around..
path.close()
return path.cgPath
}
override func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
//..stuff
}
override func draw(_ rect: CGRect) {
self.addShape()
}
func createBezierPath() -> UIBezierPath {
//..creating a path
}
我该如何解决?在当前代码设置下,我的标签栏像普通的标签栏一样出现...而不是我的自定义形状 see here
,并且我尝试在UITabBarController中覆盖我的选项卡栏属性以返回CustomizedBarBar类的实例,但是没有运气。任何帮助将不胜感激!
答案 0 :(得分:0)
请尝试以这种方式运行,并让我知道。
class MyTab: UITabBar {
}
class MyTabBarController: UITabBarController {
override var tabBar: UITabBar {
return MyTab()
}
}
答案 1 :(得分:0)
如果您使用故事板,那么使用自定义标签栏是微不足道的。