iOS获取当前设备信息

   //获取iOS设备的各种信息
   
    NSString *device_token = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    NSString *device_os = [[UIDevice currentDevice] systemVersion];
    //包含28个Key/Value
    NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
    NSString *currentVersion = [infoDic objectForKey:@"CFBundleShortVersionString"];