我在UIPageViewController中使用UITextView，我想根据设备的大小类别确定字体大小。页面View的第一张幻灯片像这样加载到ViewDidLoad中(viewControllerAtIndex(0)):overridefuncviewDidLoad(){super.viewDidLoad()//Someunrelatedcodehere//PageViewControllerforQuestionsSliderquestionPageVC=storyboard?.instantiateViewControllerWithIdentifier("QuestionPa

我在UIPageViewController中使用UITextView，我想根据设备的大小类别确定字体大小。页面View的第一张幻灯片像这样加载到ViewDidLoad中(viewControllerAtIndex(0)):overridefuncviewDidLoad(){super.viewDidLoad()//Someunrelatedcodehere//PageViewControllerforQuestionsSliderquestionPageVC=storyboard?.instantiateViewControllerWithIdentifier("QuestionPa