UITextView startInteractionWithLinkAtPoint crash iOS 11 only

Question

So I experience crash in UItextview while user interacts with URL link there. All crash reports have iOS version 11 only. This looks like well-known bug in iOS 9, but there

Answer 1

I experienced and solved this problem.

This is workaround in my production code. Disable interaction .preview state because of crashes only this state occurs.

func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
    switch interaction {
    case .presentActions, .invokeDefaultAction:
        return handleLinkURL(url: URL)
    case .preview:
        return false
    }
}

Answer 2

A crash is caused by a UIDragInteraction/UITextDragAssistant on iOS 11.0 and 11.1. It is fixed on iOS 11.2. Subclassing your UITextView and disabling drag and drop gestures will prevent the crash for any iOS version:

class NoDragDropTextView: UITextView {

    override func addGestureRecognizer(_ gestureRecognizer: UIGestureRecognizer) {

        // required to prevent drag and drop gestures
        // also prevents a crash on iOS 11.0-11.1
        gestureRecognizer.isEnabled = false

        super.addGestureRecognizer(gestureRecognizer)
    }
}