Question

How do you make methods that work across multiple views? For example. I created this:

- (void)setPageTitle:(UILabel *)title withText:(NSString *)text
{
    UIColor *pageTextColor = [UIColor colorWithRed:18.0/255.0 green:79.0/255.0 blue:118.0/255.0 alpha:1.0];

    // Set page title
    UIFont *font = [UIFont fontWithName:@"PassionOne-Regular" size:23];
    [title setFont:font];
    [title setText: text];
    title.textColor = pageTextColor;
    title.shadowColor = [UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0];
    title.shadowOffset = CGSizeMake(0, 1);

    CGRect titleRect = [title textRectForBounds:title.bounds limitedToNumberOfLines:999];
    CGRect tr = title.frame;
    tr.size.height = titleRect.size.height;
    title.frame = tr;
}

I want to be able to call the setPageTitle method on UILabels within different views. How do I go about doing this? Where do I put this code to make it work? I only want to put it in 1 file and have it work in different views. Thank you.

Answer 1

I would suggest making this a category on the UIView class.

UIView+PageTitle.h

@interface UIView (PageTitle)
- (void)setPageTitle:(UILabel *)title withText:(NSString *)text;
@end

UIView+PageTitle.m

#import "UIView+PageTitle.h"
@implementation UIView (PageTitle)
- (void)setPageTitle:(UILabel *)title withText:(NSString *)text {
    // your implementation
}
@end