How to find home screen icon size from screen resolution

Question

I am building a prank mobile application that simulate the mobile home screen.

When the user start the application it looks similar to the actual home screen.

I am going to do this by laying down images of icons in a grid. These images would be common icons that found in mobile phone screen eg: mail, camera, photos etc.

I already know the width and height of the screen. But I have to resize the icon images to a size same as the actual home screen icons.

The question I have is, is there a way to figure icon sizes from the screen resolution?

Answer 1

So you have an info about the screen resolution , and your app is an iOS mobile app; and you want to know the size of home screen icons based on this information.

In the documentation by Apple on Human Interface Guidelines , the section on App Icon says that for iPhone, icons sizes are the following :

180px x 180px (60pt x 60pt @3x)

120px × 120px (60pt × 60pt @2x)

This answers your question.

To find out more, you may visit the documentation

Answer 2

Images are sizable by 1x 2x and 3x it will adjust the users resolution you don't have to do any thing else

Answer 3

If you really want to know the icon sizes. You can use below code.

let iconImage = UIImage(named: "name_of_image")!

let heightPoints = iconImage.size.height
let heightPixel = heightPoints * iconImage.scale

let widthPoints = iconImage.size.width
let widthPixel = widthPoints * iconImage.scale