Change font type and size of UIActionSheet title string

Question

I have a UIActionSheet with title string \"DO: These tasks\". In the title string, the substring \"DO:\" should be Bold(with a particular font size) and the substring \"These ta

Answer 1

There is an internal property of UIActionSheet called _titleLabel so it is possible to get a reference and change the attributed string property of this label directly.

Please be aware, that this is a private API in might be rejected in the App store.

Here is how it works:

- (NSAttributedString *) actionSheetAttributedTitle;
{
    NSMutableAttributedString *attString=[[NSMutableAttributedString alloc] initWithString:@"Test"];
    UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:13.0f];
    [attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, attString.length)];
    [attString addAttribute:NSForegroundColorAttributeName
                  value:[UIColor blackColor]
                  range:NSMakeRange(0, attString.length)];
    return [attString copy];
}

- (void)willPresentActionSheet:(UIActionSheet *)actionSheet;
{
    UILabel *sheetTitleLabel;
    if([actionSheet respondsToSelector:@selector(_titleLabel)]) {
        sheetTitleLabel = objc_msgSend(actionSheet, @selector(_titleLabel));
        sheetTitleLabel.attributedText = [self actionSheetAttributedTitle];

    }
}