Question

I know this isn’t going to be a challenging exercise, but I thought I’d ask, just in case there’s some methods already in objective-c etc.

In my app I only handle a 2 number version number e.g. 1.5

I want to upgrade this to 4 numbers which could have up to 4 digits.

So I need to handle existing numbers and return true of false when passed database version and the bundle version numbers.

At the moment I simply do

NSString *strOnePointFive = @"1.5";
if (dblDBVersion < [strOnePointFive doubleValue]) {

}

Answer 1

This is a duplicate, was in other formats. Here are some answers to how to handle the version numbers, either equal, greater or below the required version number. Which is answer in this link..

NSString *reqSysVer = @"3.1";
NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
    isSupported = YES;
else
    isSupported = NO;