MainSideController 具有函数toggleSideMenu。但是当我点击 ContentViewController 中的配置文件 ButtonTapped 时。该按钮显示它在调试菜单中被点击,但侧面菜单没有滑入。
import UIKit
class MainSideViewController: ContentViewController{
@IBOutlet weak var sideMenuContainer: UIView!
@IBOutlet weak var sideMenuViewLeadingConstraint: NSLayoutConstraint!
@IBOutlet weak var contentViewLeadingConstraint: NSLayoutConstraint!
var sideMenuVisible = false
override func viewDidLoad() {
super.viewDidLoad()
sideMenuViewLeadingConstraint.constant = 0 - self.sideMenuContainer.frame.size.width
}
@objc func toggleSideMenu(fromViewController: UIViewController) {
if(sideMenuVisible){
UIView.animate(withDuration: 0.5, animations: {
self.sideMenuViewLeadingConstraint.constant = 0 - self.sideMenuContainer.frame.size.width
self.contentViewLeadingConstraint.constant = 0
self.view.layoutIfNeeded()
})
} else {
self.view.layoutIfNeeded()
UIView.animate(withDuration: 0.5, animations: {
self.sideMenuViewLeadingConstraint.constant = 0
self.contentViewLeadingConstraint.constant = self.sideMenuContainer.frame.size.width
self.view.layoutIfNeeded()
})
}
sideMenuVisible = !sideMenuVisible
}
}
import UIKit
class ContentViewController: UIViewController {
let profileButton = UIButton(type: .custom)
override func viewDidLoad() {
super.viewDidLoad()
profileButton.setImage(UIImage(named: "hamburger") , for: .normal)
profileButton.contentMode = .scaleAspectFit
profileButton.translatesAutoresizingMaskIntoConstraints = false
// function performed when the button is tapped
profileButton.addTarget(self, action: #selector(profileButtonTapped(_:)), for: .touchUpInside)
// Add the profile button as the left bar button of the navigation bar
let barbutton = UIBarButtonItem(customView: profileButton)
self.navigationItem.leftBarButtonItem = barbutton
// Set the width and height for the profile button
NSLayoutConstraint.activate([
profileButton.widthAnchor.constraint(equalToConstant: 35.0),
profileButton.heightAnchor.constraint(equalToConstant: 35.0)
])
// Make the profile button become circular
profileButton.layer.cornerRadius = 35.0 / 2
profileButton.clipsToBounds = true
}
@IBAction func profileButtonTapped(_ sender: Any){
print("Button tapped")
if let mainVC = self.navigationController?.tabBarController? .parent as? MainSideViewController {
mainVC.toggleSideMenu(fromViewController: self)
}
}
}
我将 sideMenuViewLeadingConstraint 添加到 viewDidLoad 中。 它仍然不起作用。我也添加了切换功能。它仍然没有滑入和滑出。
我希望个人资料按钮能够触发切换功能,并且侧面菜单能够像 Twitter 那样侧入和出。
最佳答案
代替我使用的 MainSideViewController 中的 sideMenuViewLeadingConstraint.constant = 0 - self.sideMenuContainer.frame.size.width NotificationCenter.default.addObserver(self, 选择器: #selector(toggleSideMenu), 名称: NSNotification.Name("ToggleSideMenu"), 对象: nil)
并将其放入 @IBAction func profileButtonTapped(_ 发送者: 任何){ print("按钮被点击")
NotificationCenter.default.post(名称:NSNotification.Name(“ToggleSideMenu”),对象:nil) } }
关于ios - 滑入式菜单容器无法滑动,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56169305/