IOS中获取应用的版本号

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

        // app名称

        NSString *app_Name = [infoDictionary objectForKey:@"CFBundleDisplayName"];

        // app版本

        NSString *app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];

        // app build版本

        NSString *app_build = [infoDictionary objectForKey:@"CFBundleVersion"];