how to know when text is pasted into UITextView

Question

What event is fired when a block of text is pasted into a UITextView? I need to modify the frame of my textView when the text is pasted in.

Thanks for reading.

Answer 1

In SWIFT 4:

func textViewDidChange(_ textView: UITextView) {

    if(textView.text == UIPasteboard.general.string)
    {
        //Text pasted
    }
}

Answer 2

This is what I use to detect pasted images:

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
    if (UIPasteboard.generalPasteboard.image &&
        [UIPasteboard.generalPasteboard.string.lowercaseString isEqualToString:text.lowercaseString]) {

       //Pasted image

        return NO;
    }

    return YES;
}

Answer 3

This working Perfect Xcode 9.4 Swift 4.1

 func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
    if text.contains(UIPasteboard.general.string ?? "") {
        return false
    }
    return true
}

When ever the user try to Paste into text field the if condition will execute
This code will stop pasting