在iOS11, iOS12上UITextView會有個奇怪的動畫??

之前

這個動畫看起來很難受，特別是文本比較多的時候，所以還是把它去除掉吧??

之后

class SKTextView: UITextView {

    override init(frame: CGRect, textContainer: NSTextContainer?) {
        super.init(frame: frame, textContainer: textContainer)
        
        pasteDelegate = self
    }
    
}

extension SKTextView: UITextPasteDelegate { 
    
    func textPasteConfigurationSupporting(_ textPasteConfigurationSupporting: UITextPasteConfigurationSupporting, shouldAnimatePasteOf attributedString: NSAttributedString, to textRange: UITextRange) -> Bool {
        return false
    }
}

解釋: 在合適的地方去實現一下UITextView的pasteDelegate即可，比如自定義的UITextView子類