Color Literals & Image Literals Tutorial in Swift - iOS

Swift supports Both Color Literals & Image Literals. In this we will see how to use these literals.

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Color Literals :

Normally we write colors as follow :

let color = UIColor(
    red     : 200.0/255.0,
    green   : 200.0/255.0, 
    blue    : 200.0/255.0,
    alpha   : 1.0
)

That's too long for writing and time taking one.

We can do easily by using Color Literal.

The following image will show how to add color using Color Literals.

On Start typing Color Literals we will see list of all colors as above then we can select easily by visualizing.

This is of type UIColor.

Whenever you want to select another color, just double-click inside any of those rects and the color picker will open again.

Like that we can store in arrays also.

Image Literals :

Image Literals are as same as color literals. when ever we start typing Image Literals we will see list of images that are present in your project. That's really cool.

The following image will show how to add color using Color Literals.

This is of type UIImage.

Whenever you want to change image, just double-click inside any of those rects and the image picker will open again.

Like that we can store in arrays also.

Conclusion :

Color and image literals are really great. It reduces verbosity in the code and are much more visual.