如何在 Swift 中为 UITextView 应用阴影?

How to apply a shadow to a UITextView in Swift?

我尝试像对 UIView 那样对 UITextView 应用阴影,但它不起作用。

试试这个代码:

Obj-C

txtView.layer.cornerRadius = txtView.frame.size.height/2;
txtView.clipsToBounds = NO;
txtView.layer.shadowOpacity=0.4;
txtView.layer.shadowOffset = CGSizeMake(3, 3);

Swift

txtView.layer.cornerRadius = txtView.frame.size.height/2
txtView.clipsToBounds = false
txtView.layer.shadowOpacity=0.4
txtView.layer.shadowOffset = CGSizeMake(3, 3)

希望对你有用。