如何检测应用中的iPhone OS版本？

import UIKit

let version = UIDevice.current.systemVersion
print("Current iOS version: \(version)")

import UIKit

if let infoDictionary = Bundle.main.infoDictionary {
    if let version = infoDictionary["CFBundleShortVersionString"] as? String {
        print("Current iOS version: \(version)")
    }
}

#import <sys/sysctl.h>

- (NSString *)getOSVersion {
    size_t size;
    sysctlbyname("kern.osrelease", NULL, &size, NULL, 0);
    char *version = malloc(size);
    sysctlbyname("kern.osrelease", version, &size, NULL, 0);
    NSString *osVersion = [NSString stringWithCString:version encoding:NSUTF8StringEncoding];
    free(version);
    return osVersion;
}

import UIKit

let version = UIDevice.current.systemVersion
let versionComponents = version.split(separator: ".").map { Int($0) ?? 0 }
print("Current iOS version: \(versionComponents)")