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Excellent work, we have everything wired up with our button or that we have to do is turn our screen



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torch red when we want to turn it on.



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So the way we do that is we grab the view.



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Now, remember, the button sits on a canvas.



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That canvas is called The View.



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It backs everything in what you can see in that particular screen.



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We can access it in our view controller, because our view controller is linked to that storyboard.



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So I can just start typing view.



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And there it is, the view that the controller manages.



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If you press enter, it loads it for you.



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Now what about the view?



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Do we want to change?



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If you put a dot and start typing back ground color, this is where you change it.



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Press enter.



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Equal to now, the way we get colors in iOS, there are several ways we can define them as red, green,



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blue or hex colors, or I forget the other systems, but there's a really easy way, and that is to



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call user interface color.



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Dot, and then you have a whole list of the various colors, so first green torch, we want red.



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Well, it's an astronomy torch, so let's have it now if we play this.



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Check this out.



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Are we loaded up, yes, button and bang, the view goes red.



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Now if I press the button again, nothing happens because all it's doing is setting that red every every



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time.



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So I'm going to set you just a little bit of homework here.



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I would like you to think about how you change this item into an if else statement that flips between



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red and white for the screen torch.



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Pretty simple.



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Have a good go at it before I show you the solution.