我正在根据其内容调整UITextView的大小。然后我希望能够获取textview的高度并将其放在一个变量中:varheightFloat:CGFloatoverridefuncviewDidLayoutSubviews(){super.viewDidLayoutSubviews()letcontentSize=self.definitionTextView.sizeThatFits(self.definitionTextView.bounds.size)varframe=self.definitionTextView.frameframe.size.height=contentSiz