小编Ame*_*mey的帖子

let dictTitleColor = [NSAttributedStringKey.foregroundColor: UIColor.LTColor()]
let titleAttributedString = NSMutableAttributedString(string: title, attributes: dictTitleColor)
alert.setValue(titleAttributedString, forKey: "attributedTitle")

当我增加设备的字体大小时标题字符串不增加我在alertview控制器中设置了这个字符串？那么如何使这个响应字体大小更改？

在iphone x中设置安全区域后。当键盘打开时，安全区域（键盘上方的白色区域）位于键盘上方，那么如何操作键盘？

键盘上方的白色区域。

处理键盘代码：-

func keyboardWillChangeFrameWithNotification(_ notification: Notification, showsKeyboard: Bool) {

        let userInfo = notification.userInfo!
        let animationDuration: TimeInterval = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as! NSNumber).doubleValue
        let keyboardScreenEndFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue

        // keyboardRect = [self.view convertRect:keyboardRect fromView:nil];
        let keyBoardRect = self.view.convert(keyboardScreenEndFrame, from:nil)

        UIView.animate(withDuration: animationDuration, delay: 0, options: .beginFromCurrentState, animations: {

            // Keyboard is going to appear. move composebar up
            if showsKeyboard {
                self.constraintBottomAttachmentView.constant =  keyBoardRect.size.height
            } else { // Keyboard is going to disappear. Move composebar down.
                self.constraintBottomAttachmentView.constant = 0
            }

            self.view.layoutIfNeeded()
            }, …

我已经在导航栏中嵌入了SearchController。如何更改UITextField的颜色将搜索字符串保留为White的颜色？