CODEWITHSUNDEEP
iphoneuicolor
Maulik
Maulik

Reputation: 19418

how can I pass UIColor's name

I want to know that how can I pass UIColor's name to the specific method ?

EDIT :

- (id) setLabel:(NSString *)text WithColorName:(NSString *)nameOfColor FontName:(NSString *)f_name FontSize:(float)f_size abel:(UILabel *)templbl
{
  templbl.backgroundColor = [UIColor ?????];

return templbl;

}

any suggestions ?

Thanks..

Upvotes: 3

Views: 3710

Answers (5)

Jason Harwig
Jason Harwig

Reputation: 45551

You can dynamically invoke the color class methods:

- (id) setLabel:(NSString *)text WithColorName:(NSString *)nameOfColor FontName:(NSString *)f_name FontSize:(float)f_size abel:(UILabel *)templbl
{

    SEL colorMethod = NSSelectorFromString([NSString stringWithFormat:@"%@Color", [nameOfColor lowercaseString]]);

    // Check if this is a valid color first
    if ([[UIColor class] respondsToSelector:colorMethod]) {

        // Dynamically invoke the class method
        UIColor *color = [[UIColor class] performSelector:colorMethod];
        templbl.backgroundColor = color;
    }

}

Upvotes: 1

Matthias Bauch
Matthias Bauch

Reputation: 90117

NSString *colorStr = @"magenta";

NSString *selectorString = [colorStr stringByAppendingString:@"Color"];
SEL selector = NSSelectorFromString(selectorString);
UIColor *color = [UIColor blackColor];
if ([UIColor respondsToSelector:selector]) {
    color = [UIColor performSelector:selector];
}

Upvotes: 14

lxt
lxt

Reputation: 31304

Jhaliya's answer will work, it's not actually strictly what you were asking (in your example you don't want to pass a UIColor as a parameter, you just want to pass it's preset string name.

This is a little tricky, since things like [UIColor redColor] are methods, not string parameters. You would have to use NSSelectorFromString to achieve it. Much better to pass a UIColor in as Jhaliya's answer shows.

Upvotes: 0

justin
justin

Reputation: 104698

one option is a dictionary, where the name is the key and the color is the value

Upvotes: 1

Jhaliya - Praveen Sharma
Jhaliya - Praveen Sharma

Reputation: 31722

- (id) setLabel:(NSString *)text WithColorName:(NSString *)nameOfColor FontName:(NSString *)f_name FontSize:(float)f_size abel:(UILabel *)templbl color:(UIColor*) myLabelColor
{
  templbl.backgroundColor = myLabelColor;
  return templbl;
}

Upvotes: 1

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