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iOS Build a Simple iPhone App with Swift Improving Our User Interface Adding a Pop of Color

Posted by Joseph Davison
Joseph Davison
1,179 Points

Why is view.backgroundColor not accessible outside of certain functions?

I was experimenting with the background color when I quickly discovered that the "view" variable that we used to access the background color is not accessible except within our three functions in the view controller. Even when I try to type 'view.backgroundColor' or even just 'view' in view controller, but not within the code of one of those functions, I get an error.

Why is that? We imported the UIKit at the beginning. Shouldn't that variable be accessible everywhere? How do import what I need to to use it elsewhere?

1 Answer

Andres Oliva
Andres Oliva
7,810 Points
Andres Oliva
Andres Oliva
7,810 Points

You can't access properties outside the scope of a function. What is written inside the class "ViewController" is known as the interface (property declaration), the functions are the implementation. You may access properties only within the implementation.