how to set shadow of UItextview border?

Question

Hi i want to set shadow of UItextView like below in image.

I have tried below code but it does not give me same result rather it also make the text of UITextView as shadow.

self.tv_comments.layer.shadowRadius = 5.0
self.tv_comments.layer.borderColor = UIColor.gray.cgColor
self.tv_comments.layer.borderWidth = 1
self.tv_comments.layer.shadowColor = UIColor.gray.cgColor
self.tv_comments.layer.shadowOffset = CGSize(width: 2.0, height: 2.0)
self.tv_comments.layer.shadowOpacity = 1.0
self.tv_comments.textColor = UIColor.black

Above code results me this view which is not required

Answer 1

The below code works fine

self.tv_comments.layer.shadowColor = UIColor.black.cgColor;
self.tv_comments.layer.shadowOffset = CGSize(width: 1.0, height: 1.0)
self.tv_comments.layer.shadowOpacity = 1.0
self.tv_comments.layer.shadowRadius = 5.0
self.tv_comments.layer.masksToBounds = false

However, when masksToBounds = false, any sublayers that extend outside the layer's boundaries will be visible. So UITextField scroll text outside the layer.

If this is a problem for you, just add another UIView under your UITextView and set it's layer to display shadow.

Answer 2

Is your UITextView background color is clear color ? If yes, then set the background color of UITextView or UITextView layer background color. Because setting UITextView background color nik will set it's layer's background color to nil.So

self.tv_comments.backgroundColor = UIColor.white
//or self.tv_comments.backgroundColor = UIColor.clear
//self.tv_comments.layer.backgroundColor = UIColor.white

self.tv_comments.layer.shadowRadius = 5.0
self.tv_comments.layer.borderColor = UIColor.gray.cgColor
self.tv_comments.layer.borderWidth = 1
self.tv_comments.layer.shadowColor = UIColor.gray.cgColor
self.tv_comments.layer.shadowOffset = CGSize(width: 2.0, height: 2.0)
self.tv_comments.layer.shadowOpacity = 1.0
self.tv_comments.textColor = UIColor.black