如何根据 navigationItem.title 的设备大小调整字体大小

Question

I have a chat screen in my app where in recent iPhone the navigation title looks ok. but on an older devices like 6/7/8 the font is too big, I know.adjustsFontSizeToFitWidth = true and.minimumScaleFactor = 0.2 can adjust the font size of uilabel but how do I do the same for navigationItem.title, adding varient to storyboard for (C,C) didn't solve the problem

Answer 1

navigation item actually has a property called titleView which you can set your custom label to

Example:

let myLabel = UILabel()

myLabel.text = "Custom Title"
myLabel.minimumScaleFactor = 0.2
myLabel.numberOfLines = 1
myLabel.adjustsFontSizeToFitWidth = true
myLabel.font = UIFont.preferredFont(forTextStyle: .title1)

navigationItem.titleView = myLabel