How to keep a round imageView round using auto layout?

Question

How do I turn a rectangular image view into a circular image view that can hold shape in auto layout without setting width and height restraints? Thereby allowing the imageV

Answer 1

Can be easily done by creating an IBOutlet for the constraint which needs to be changed at runtime. Below is the code:

1. Create a IBOutlet for the constraint that needs to be changed at run time.

   @IBOutlet var widthConstraint: NSLayoutConstraint!
   

2. Add below code in viewDidLoad():

   self.widthConstraint.constant = imageWidthConstraintConstant()
   

Below function determines for device types change the width constraint accordingly.

func imageWidthConstraintConstant() -> CGFloat {

    switch(self.screenWidth()) {

    case 375:
        return 100

    case 414:
        return 120

    case 320:
        return 77

    default:
        return 77
    }
}