iOS 本地版本和服务器版本比较

本地版本和服务版本比较，纯数字比较

//
//  HanVersionJudge.h
//
//
//  Created by han on 2021/12/24.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

typedef enum : NSUInteger {
    VersionError = -1,//版本异常
    VersionLower = 0,//比本地版本低
    VersionHigher,//比本地版本高
    VersionSame,//版本一致
} VersionState;

@interface HanVersionJudge : NSObject

/// 判断传入的版本和本地版本
/// 仅适用于x.xx.xxx纯数字版本号
/// @param version 版本号
+(VersionState)compareLocalVersionWith:(NSString *)version;
@end

NS_ASSUME_NONNULL_END

//
//  HanVersionJudge.m
//  HanTest4
//
//  Created by han on 2021/12/24.
//

#import "HanVersionJudge.h"

@implementation HanVersionJudge
+(VersionState)compareLocalVersionWith:(NSString *)version{
    NSString *localVersion = [[[NSBundle mainBundle]infoDictionary]objectForKey:@"CFBundleShortVersionString"];
    NSArray *localVerArr = [localVersion componentsSeparatedByString:@"."];
    NSArray *verArr = [version componentsSeparatedByString:@"."];
    
    BOOL isNum1 = [self isNumber:localVersion];
    BOOL isNum2 = [self isNumber:version];
    
    if (isNum1 == NO || isNum2 == NO) {
        return VersionError;
    }
    
    if ([version isEqualToString:localVersion]) {
        return VersionSame;
    }
    
    if (verArr.count < localVerArr.count) {
        return VersionLower;
    }else if (verArr.count > localVerArr.count) {
        return VersionHigher;
    } else{
        for (int i = 0; i < localVerArr.count ; i++) {
            NSString *locVer = localVerArr[i];
            NSString *ver = verArr[i];
            if ([locVer integerValue] > [ver integerValue] ) {
                return VersionLower;
            }else if ([locVer integerValue] < [ver integerValue] ) {
                return VersionHigher;
            }
        }
    }
    
    return VersionLower;
}
+ (BOOL)isNumber:(NSString *)strValue
{
    if (strValue == nil || [strValue length] <= 0)
    {
        return NO;
    }
    
    NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:@"0123456789."] invertedSet];
    NSString *filtered = [[strValue componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
    
    if (![strValue isEqualToString:filtered])
    {
        return NO;
    }
    return YES;
}

@end