Objective-c: NSString to enum

Question

So, I\'ve got this definition:

typedef enum {
    red = 1,
    blue = 2,
    white = 3
} car_colors;

Then, I\'ve got a variable of type car_col

Answer 1

I found the solution:

if ([car_color isEqualToString:@"1"])
        return red;
if ([tipo_pdi isEqualToString:@"2"])
        return blue;
if ([tipo_pdi isEqualToString:@"3"])
        return white;

But I don't like this 'if' style, what if I had a thousand colors? Isn't there a more automatic solution?