how can I pass UIColor's name - iphone

Question

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..

Answer 1

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

Answer 2

- (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;
}

Answer 3

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

Answer 4

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;
}
}

Answer 5

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.