How to check iOS version?

How to Check iOS Version like a Pro! 📱

So you want to know how to check the iOS version on your device? Well, you've come to the right place! Whether you're a tech newbie or a seasoned pro, we've got you covered.

The Challenge 🤔

One of our readers recently asked us this tricky question:

"How can I check if the iOS version of my device is greater than 3.1.3? I've tried using [[UIDevice currentDevice].systemVersion floatValue], but it's not working. I just want a simple if statement to do the job. Can you help?"

The Solution 💡

Don't worry, we've got a super simple solution for you! Instead of using floatValue and comparing floating-point numbers, we'll make use of the NSDecimalNumber class to get accurate results. Here's how you can achieve it:

// Get the current iOS version as a string
NSString *currentVersion = [[UIDevice currentDevice] systemVersion];

// Create an NSDecimalNumber with the desired version
NSDecimalNumber *desiredVersion = [NSDecimalNumber decimalNumberWithString:@"3.1.3"];

// Create an NSDecimalNumber with the current version
NSDecimalNumber *currentVersionNumber = [NSDecimalNumber decimalNumberWithString:currentVersion];

// Compare the two versions
NSComparisonResult result = [currentVersionNumber compare:desiredVersion];

// Check the result
if (result == NSOrderedDescending) {
    // Current version is greater than 3.1.3
    // Your code here!
} else if (result == NSOrderedAscending) {
    // Current version is less than 3.1.3
    // Your code here!
} else {
    // Current version is equal to 3.1.3
    // Your code here!
}

Now you have an if statement that compares the iOS version with 3.1.3 in a more accurate way. No more floating-point weirdness!

Going the Extra Mile ✨

If you're looking to take it a step further, you can even create a handy utility method to make this comparison reusable throughout your codebase. Here's an example of how you can do it:

+ (BOOL)isCurrentVersionGreaterThan:(NSString *)version {
    NSDecimalNumber *desiredVersion = [NSDecimalNumber decimalNumberWithString:version];
    NSDecimalNumber *currentVersionNumber = [NSDecimalNumber decimalNumberWithString:[[UIDevice currentDevice] systemVersion]];
    NSComparisonResult result = [currentVersionNumber compare:desiredVersion];
    return (result == NSOrderedDescending);
}

Now, whenever you want to compare the current iOS version, you can simply call this method, like so:

if ([YourUtilityClass isCurrentVersionGreaterThan:@"3.1.3"]) {
    // Current version is greater than 3.1.3
    // Your code here!
} else {
    // Current version is less than or equal to 3.1.3
    // Your code here!
}

Conclusion 🎉

You've made it through! Now you know how to check the iOS version on your device like a pro. We hope this guide has been helpful to you. If you have any further questions or you want to share your own insights, feel free to leave a comment below.

Now it's your turn! Go ahead and implement this code snippet and let us know how it works for you. Happy coding! 👩‍💻👨‍💻