我使用pinchGesture使用以下代码放大和缩小textView。添加pinchGesture到textViewletpinchGesture=UIPinchGestureRecognizer(target:self,action:#selector(self.handlePinch))pinchGesture.delegate=selfview.addGestureRecognizer(pinchGesture)委托(delegate)@IBActionfunchandlePinch(recognizer:UIPinchGestureRecognizer){ifletview=r