iOS 判断版本是否需要更新

//判断是否需要提示更新App

- (void)shareAppVersionAlert {

   

     if(![self judgeNeedVersionUpdate])  return ;

    //App内info.plist文件里面版本号

    NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];

    NSString *appVersion = infoDict[@"CFBundleShortVersionString"];

    NSString *bundleId   = infoDict[@"CFBundleIdentifier"];

    NSString *urlString =  [NSString stringWithFormat:@"https://itunes.apple.com/cn/lookup?id=1381017103"];

    NSURL *urlStr = [NSURL URLWithString:urlString];

    //创建请求体

    NSURLRequest *urlRequest = [NSURLRequest requestWithURL:urlStr];

    [NSURLConnection sendAsynchronousRequest:urlRequest queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {

        if (connectionError) {

            //            NSLog(@"connectionError->%@", connectionError.localizedDescription);

            return ;

        }

        NSError *error;

        NSDictionary *resultsDict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];

        NSLog(@"resultsDict +++:%@", resultsDict);

        if (error) {

            //            NSLog(@"error->%@", error.localizedDescription);

            return;

        }

        NSArray *sourceArray = resultsDict[@"results"];

        if (sourceArray.count >= 1) {

            //AppStore内最新App的版本号

            NSDictionary *sourceDict = sourceArray[0];

            NSString *newVersion = sourceDict[@"version"];

            NSLog(@"newVersion:%@",newVersion);

           

            if ([newVersion floatValue]*1000>[appVersion floatValue]*1000)

            {

                UIAlertController *alertVc = [UIAlertController alertControllerWithTitle:@"提示:\n您的App不是最新版本,请问是否更新" message:@"" preferredStyle:UIAlertControllerStyleAlert];

                UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"暂不更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

                    //                    [alertVc dismissViewControllerAnimated:YES completion:nil];

                }];

                [alertVc addAction:action1];

                UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"去更新" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {

                    //跳转到AppStore,该App下载界面

                    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:sourceDict[@"trackViewUrl"]]];

                }];

                [alertVc addAction:action2];

                [[UIApplication sharedApplication].delegate.window.rootViewController presentViewController:alertVc animated:YES completion:nil];

            }

        }

    }];

}


//每天进行一次版本判断

- (BOOL)judgeNeedVersionUpdate {

    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

    [formatter setDateFormat:@"yyyy-MM-dd"]

    //获取年-月-日

    NSString *dateString = [formatter stringFromDate:[NSDate date]];

    NSString *currentDate = [[NSUserDefaults standardUserDefaults] objectForKey:@"currentDate"];

    if ([currentDate isEqualToString:dateString]) {

        return NO;

    }

    [[NSUserDefaults standardUserDefaults] setObject:dateString forKey:@"currentDate"];

    return YES;

}


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