iOS 检测版本更新

+ (void)checkVersionWithBlock:(void (^)(NSString *))theBlock
{
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:CheckVersionURLString]];
    
    [self postDataWithPath:request
  withUseActivityIndicator:NO
         withResponseBlock:^(id result, NSError *err) {
             
             //1.获取当前版本号
             NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
             
             NSString *appVersion = [infoDictionary objectForKey:@"CFBundleShortVersionString"];

             if (result) {
                
                 
                 NSString *newVersion = result[@"version"];
                 
                 BOOL isNeedForceUpdate = NO;
                 BOOL isNeedUpdate = NO;
                 
　　　　　　　　　　//判断需要强制更新、普通更新
　　　　　　　　　　//你的判断代码
                 if (isNeedForceUpdate) {//强制更新
                     [[WKAlertView shareInstance] showTitle:@"更新提示"
                                                withMessage:messageStr
                                           withCancelButton:nil
                                            withOtherButton:@"更新"
                                   withMessageAlignmentLeft:YES
                                            withHanderBlock:^(UIAlertView *alertView, NSInteger buttonIndex) {
                                                if (buttonIndex == 0) {//是
                                                    [[UIApplication  sharedApplication] openURL:[NSURL URLWithString:UpdateVersionURLString]];
                                                }
                                            }];
                     
                     [[NSUserDefaults standardUserDefaults] setObject:@(isNeedForceUpdate) forKey:@"isNeedForceUpdate"];

                 }else if (isNeedUpdate){//提示更新
                     
                     //上次检测更新的版本号
                     //此次检测更新的版本号
                     //是否取消过
                     NSString *lastChekedVersion = [userDefaults stringForKey:LastCheckedVersionKey];
                     
                     BOOL isNeedShowAlert;
                     if(![newVersion isEqualToString:lastChekedVersion]){//需要显示
                        isNeedShowAlert  = YES;
                         

                         
                     }else{
                         isNeedShowAlert = NO;
                     }
                     
                     if (isNeedShowAlert) {
                         [[WKAlertView shareInstance] showTitle:@"更新提示"
                                                    withMessage:messageStr
                                               withCancelButton:@"否"
                                                withOtherButton:@"是"
                                       withMessageAlignmentLeft:YES
                                                withHanderBlock:^(UIAlertView *alertView, NSInteger buttonIndex) {
                                                    if (buttonIndex == 1) {//是
                                                        
                                                        [[UIApplication  sharedApplication] openURL:[NSURL URLWithString:UpdateVersionURLString]];
                                                        
                                                    }
                                                    
                                                    if (buttonIndex == 0) {//否
                                                        //存储上一次检测更新的版本串
                                                        [userDefaults setValue:newVersion forKey:LastCheckedVersionKey];
                                                    }
                                                    
                                                }];
                         [[NSUserDefaults standardUserDefaults] setObject:@(isNeedUpdate) forKey:@"isNeedUpdate"];
                         [[NSUserDefaults standardUserDefaults]synchronize];
                     }
                 }
             }
          }];
}