Question

I have a main controller header with a color declaration

MainViewController.h

@interface MainViewController : UIViewController <FlipsideViewControllerDelegate> {
UIColor *myColor;
}
@property (nonatomic, retain) UIColor *myColor;
@end

and an implementation with an initialization

MainViewController.m

@implementation MainViewController
@synthesize myColor;

- (void)viewDidLoad
{
    [super viewDidLoad];
    myColor = [UIColor colorWithRed:1.0 green:0.98 blue:0.8 alpha:1]; //initialization
}

Now I want to use this color in a method in MainViewController like this

- (void) myMethod {
myTextField.backgroundColor = myColor;
}

but but all my attempts are in vain. What is the correct syntax?

Answer 1

You must send a retain to the color object you initialize :

myColor = [[UIColor colorWithRed:1.0 green:0.98 blue:0.8 alpha:1] retain]; 

or set the property like so :

self.myColor = [UIColor colorWithRed:1.0
                                green:0.98
                                 blue:0.8 alpha:1]; 

which, according to the property you declared, should retain it. The way you set the backgroundColor is ok.