nv-ios-version

Overview

This project provides an Objective-C class that represents version information. The main purpose is to parse the version string returned from [[UIDevice currentDevice] systemVersion] and construct an instance of Version class that provides utility methods and thus makes it easy to get and compare iOS version at runtime.

License

Apache License, Version 2.0

Download

git clone https://github.com/TakahikoKawasaki/nv-ios-version.git

Example

// Get the system version of iOS at runtime.
NSString *versionString = [[UIDevice currentDevice] systemVersion];

// Convert the version string to a Version instance.
Version *version = [Version versionWithString:versionString];

// Dump the major, minor and micro version numbers.
NSLog(@"version = [%d, %d, %d]", version.major, version.minor, version.micro);

// 'description' method returns major.minor, or major.minor.micro
// when micro version is not 0. For example, "6.1" is returned for
// version 6.1.0 and "6.1.1" is returned for version 6.1.1.
// In either case, a Version instance can be put as an argument of NSLog().
NSLog(@"version = %@", version);

// Check whether the version is greater than or equal to 6.0.
if ([version isGreaterThanOrEqualToMajor:6 minor:0])
{
    // The iOS version is greater than or equal to 6.0.
}

// Another way to check whether the version is greater than or equal to 6.0.
if (version.major >= 6)
{
    // The iOS version is greater than or equal to 6.0.
}

As a sample code, System class is contained in this project. The class has a class method version which returns a Version instance that represents iOS version. With the System class, version checking becomes like below.

if (System.version.major >= 6)
{
    // The iOS version is greater than or equal to 6.0.
}

Blog

[Get and compare iOS version at runtime with Version class] (http://darutk-oboegaki.blogspot.jp/2013/04/get-and-compare-ios-version-at-runtime.html)

Author

Takahiko Kawasaki, Neo Visionaries Inc.