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iOS Build a Simple iPhone App (iOS7) Refactoring into a Model Readonly Attribute

Marlon Pleitez
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Marlon Pleitez
Full Stack JavaScript Techdegree Student 9,563 Points
Posted by Marlon Pleitez
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Marlon Pleitez
Full Stack JavaScript Techdegree Student 9,563 Points

Making a method to return NSColor?

Hi guys right now I'm following the track and I am at the part where we moved the predictions from the controller to the model. I got everything working but I am also following the extra credit which instructs you to change the color of the prediction as well. I got it working in the controller file but when I created a method for randomColors (just like we did for randomPrediction), I get an error and I don't know how to solve it. This is my method in the h file.

-(NSColor *) randomColor;

What I'm asking is what goes in the return type? Because I know NSColor * is not it. Thanks!

3 Answers

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

If your trying to make a method that returns a random color you method declaration is correct

EDIT the method would look something like this:

-(UIColor *)randomColor
{
    float red = arc4random() % 255 / 255.0;
    float green = arc4random() % 255 / 255.0;
    float blue = arc4random() % 255 / 255.0;
    UIColor *color = [UIColor colorWithRed:red green:green blue:blue alpha:1.0];

    return color;
}
Marlon Pleitez
seal-mask
.a{fill-rule:evenodd;}techdegree
Marlon Pleitez
Full Stack JavaScript Techdegree Student 9,563 Points
Marlon Pleitez
.a{fill-rule:evenodd;}techdegree
Marlon Pleitez
Full Stack JavaScript Techdegree Student 9,563 Points

I am trying to return a random color but the compiler keeps coming up with the error 'expected a type'.

EDIT: I just figured it out, I was trying to return an NSColor when it should have been UIColor! Syntax will always be the death of me. Thanks!

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

I acutally didn't see that. Oh well, glad it worked out! :)