iOS獲取當前設備信息

   //獲取iOS設備的各類信息
   
    NSString *device_token = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    NSString *device_os = [[UIDevice currentDevice] systemVersion];
    //包含28個Key/Value
    NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
    NSString *currentVersion = [infoDic objectForKey:@"CFBundleShortVersionString"];