[版本更新提示]

-(void)checkVersion

{

//每天进行一次版本判断

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;

}

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

NSString *newVersion;

NSURL *url = [NSURL URLWithString:@"http://itunes.apple.com/cn/lookup?id=1139094792"];//这个URL地址是该app在iTunes connect里面的相关配置信息。其中id是该app在app store唯一的ID编号。

NSString *jsonResponseString = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];

NSLog(@"通过appStore获取的数据信息：%@",jsonResponseString);

NSData *data = [jsonResponseString dataUsingEncoding:NSUTF8StringEncoding];

//    解析json数据

id json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

NSArray *array = json[@"results"];

for (NSDictionary *dic in array) {

newVersion = [dic valueForKey:@"version"];

}

NSLog(@"通过appStore获取的版本号是：%@",newVersion);

//获取本地软件的版本号

NSString *localVersion = [[[NSBundle mainBundle]infoDictionary] objectForKey:@"CFBundleVersion"];

NSString *msg = [NSString stringWithFormat:@"您的App不是最新版本，请问是否更新"];

//对比发现的新版本和本地的版本

if ([newVersion floatValue] > [localVersion floatValue])

{

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"更新提示"message:msg preferredStyle:UIAlertControllerStyleAlert];

[self presentViewController:alert animated:YES completion:nil];

[alert addAction:[UIAlertAction actionWithTitle:@"现在更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"https://itunes.apple.com/cn/app/yi-ka-tongbic-ban/id1139094792?l=en&mt=8"]];

//这里写的URL地址是该app在app store里面的下载链接地址，其中ID是该app在app store对应的唯一的ID编号。

NSLog(@"点击现在升级按钮");

}]];

[alert addAction:[UIAlertAction actionWithTitle:@"下次再说" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

NSLog(@"点击下次再说按钮");

}]];

}

}