Application error with voice every time you enable textbox with link in it

I solved this problem and wanted to share so others with the same confusing problem can fix it.

The first thing to do is to subclass UITextView

and override in that subclass func accessibilityActivate() -> Bool

. Then make a delegate that handles what happens when the TextView is activated and calls it through an overridden method.

Then set the TextView delegate based on UIAccessibilityIsVoiceOverRunning()

, so if voice trigger is started, set UITextViewDelegate

to nil

that prevents the crash from occurring, and then the activation action is handled by the method you overridden in the subclass above. Finally, set up a listener for UIAccessibilityVoiceOverStatusChanged

and set the parameter UITextViewDelegate

in nil

when going from enabled to enabled and set it to the original delegation class for the opposite scenario.

Some codes:

//: Playground - noun: a place where people can play

import UIKit

class Test : UITabBarController, UITextViewDelegate, ActivationDelegate {

    var voiceOverRunning : Bool {
        get {
            return UIAccessibilityIsVoiceOverRunning()
        }
    }

    var testView = AccessibilityView()

    override func viewDidLoad() {
        if !voiceOverRunning {
            testView.delegate = self
        } else {
            testView.activationDelegate = self
        }

        NotificationCenter.default.addObserver(
            self,
            selector: #selector(self.didChangeVoiceOver),
            name: NSNotification.Name(rawValue: UIAccessibilityVoiceOverStatusChanged),
            object: nil)
    }

    func doStuff() {
        /*
         Do what you want to happen here on activation
         */
    }


    @objc
    func didChangeVoiceOver(){
        testView.delegate              = voiceOverRunning ? nil : self
        testView.activationDelegate    = voiceOverRunning ? self : nil
    }


}

protocol ActivationDelegate : class {
    func doStuff()
}
class AccessibilityView : UITextView {

    var activationDelegate : ActivationDelegate!

    override func accessibilityActivate() -> Bool {
        activationDelegate.doStuff()
        return true
    }
}