transform change it's subview's frame

[jiangliansong19]

Execuse me,

I have set contentView.frame = CGRect(0, 10, 100, 100). But after a Popover transform in func show(), it's contentView has changed frame. Then I find:

override open func layoutSubviews() {
   super.layoutSubviews()
   self.contentView.frame = self.bounds
 }

scale tranform will execute this code, and contentView.frame will be changed.

Thank you!