UIMenuItem选择器方法在iOS 11 beta SDK中崩溃.
-[WKContentView highlightText]: unrecognized selector sent to instance 0x7f85df8f3200
方法定义:
func highlightText()
{
//
}
我尝试在WKWebView中添加UIMenuItem,
let menuItemHighlight = UIMenuItem.init(title: "Highlight", action: #selector(ContentWebkitView.highlightText))
UIMenuController.shared.menuItems = [menuItemHighlight]
最佳答案 当我重写canPerformAction并检查我的自定义选择器时,我也遇到了这个错误.在我的情况下,我想删除除我的自定义菜单项以外的所有菜单项,以下内容使我的工作正常.
class ViewController: UIViewController {
@IBOutlet weak var webView: MyWebView!
override func viewDidLoad() {
super.viewDidLoad()
loadWebView()
setupCustomMenu()
}
func loadWebView() {
let url = URL(string: "http://www.google.com")
let request = URLRequest(url: url!)
webView.load(request)
}
func setupCustomMenu() {
let customMenuItem = UIMenuItem(title: "Foo", action:
#selector(ViewController.customMenuTapped))
UIMenuController.shared.menuItems = [customMenuItem]
UIMenuController.shared.update()
}
@objc func customMenuTapped() {
let yay = "🤪🤪🤪🤪🤪🤪🤪🤪🤪🤪🤪🤪"
let alertView = UIAlertController(title: "Yay!!", message: yay, preferredStyle: .alert)
alertView.addAction(UIAlertAction(title: "cool", style: .default, handler: nil))
present(alertView, animated: true, completion: nil)
}
}
class MyWebView: WKWebView {
// turn off all other menu items
override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
return false
}
}