版本升级提示

-(void)appVersion{
    //self.appUrlInAppStore为应用在AppStore的完整url地址
    if (!self.appUrlInAppStore) {
        return ;
    }
    NSURL *url = [NSURL URLWithString:self.appUrlInAppStore];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [NSURLConnection connectionWithRequest:request delegate:self];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    NSError *error;
    id response = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
    NSDictionary *appInfo = (NSDictionary *)response;
    NSArray *infoContent = appInfo[@"results"];
    //最新版本号
    NSString *newestVersion = [infoContent[0] objectForKey:@"version"];
    NSLog(@"最新的版本号：%@",newestVersion);
    //获取当前版本号
    NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
    NSString *currentAppVersion = infoDic[@"CFBundleShortVersionString"];
    NSLog(@"app如今的版本号：%@",currentAppVersion);
    
    //根据两个版本号是否是一致去提示用户升级
}