UIWebView Bug: -[UIWebView cut:]: unrecognized selector sent to instance

Question

In the UIWebView, if an input element containing text has focus, and a button is pressed that causes the input to lose focus, then subsequently double-tapping on th

Answer 1

If anyone is interested, here's the swift version of Leo Natans method :

import Foundation
import ObjectiveC

var AssociatedObjectHandle: UInt8 = 0


class CustomWebView: UIWebView {
    func _internalView() -> UIView? {
        var internalView:UIView? = objc_getAssociatedObject(self, "__internal_view_key") as? UIView
        if internalView == nil && self.subviews.count > 0 {
            for view: UIView in self.scrollView.subviews {
                if view.self.description.hasPrefix("UIWeb") {
                    internalView = view
                    objc_setAssociatedObject(self, "__internal_view_key", view, objc_AssociationPolicy.OBJC_ASSOCIATION_ASSIGN)
                }
            }
        }
        return internalView
    }

    override func awakeFromNib() {
        super.awakeFromNib()
        self._prepareForNoCrashes()
    }

    func _prepareForNoCrashes() {
        let selectors = ["cut:", "copy:", "paste:", "select:", "selectAll:", "delete:", "makeTextWritingDirectionLeftToRight:", "makeTextWritingDirectionRightToLeft:", "toggleBoldface:", "toggleItalics:", "toggleUnderline:", "increaseSize:", "decreaseSize:"]
        for selName: String in selectors {
            let selector = NSSelectorFromString(selName)
            //This is safe, the method will fail if there is already an implementation.
            let swizzledMethod:IMP = class_getInstanceMethod(CustomWebView.self, #selector(CustomWebView.webView_implement_UIResponderStandardEditActions))
            class_addMethod(CustomWebView.self, selector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))
        }
    }

    func webView_implement_UIResponderStandardEditActions(this:AnyObject, selector:Selector, param:AnyObject)
    {
        let method = {(val1: UIView?, val2: Selector, val3: AnyObject) -> Void in
            self._internalView()?.methodForSelector(selector)
        }

        method(self._internalView(), selector, param);
    }

}