Correct Image and Font Scale on different Devices?

Question

I have a simple view with a text and an Image. I ran this app on iPhone6Plus and iPhone5. Then I made a screenshot of both and enlarged the iPhone5 screenshot such that it match

Answer 1

in programatically (X and Y) we pre define the values in constant :

#define XScale [[UIScreen mainScreen] bounds].size.width / 320.0f
#define YScale [[UIScreen mainScreen] bounds].size.height / 568.0f

Then create UIImageView programatically

var imageView : UIImageView
imageView  = UIImageView(frame:CGRectMake(XScale *someValue, YScale * someValue, XScale *someValue, YScale *someValue));
imageView.image = UIImage(named:"image.jpg")
self.view.addSubview(imageView)

based on your screen size we need to set Constant values. We use for iPhone5 and 4s screen.