iPhone check firmware version

Question

HI all

I want to make one app for iPhone 2.2.* and for version 3.0. Some method in 2.2* is deprecated in 3.0. ( like UITableViewCell setText and setLabel )

I

Answer 1

Alternate solution, just check using respondsToSelector. For example-

CGSize expectedLabelSize;
    if ([subTitle respondsToSelector:@selector(sizeWithAttributes:)])
    {
        expectedLabelSize = [subTitle sizeWithAttributes:@{NSFontAttributeName:subTitleLabel.font}];
    }else{
        expectedLabelSize = [subTitle sizeWithFont:subTitleLabel.font constrainedToSize:subTitleLabel.frame.size lineBreakMode:NSLineBreakByWordWrapping];
    }