//软件版本   
    - (void)softwareVersion   
    {   
        NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];   
        NSString *currentVersion = [NSString stringWithFormat:@"当前软件版本为:%@",infoDic[@"CFBundleShortVersionString"]];   
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"软件版本" message:currentVersion delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil nil];   
        [alertView show];   
    }