選中Storyboard上的指定ViewController顶考，設(shè)置identity inspector（身份檢查器）中的 Storyboard ID 值倔毙。
// HQLLoginViewController *loginViewController = [[HQLLoginViewController alloc] init];
// [self.navigationController pushViewController:loginViewController animated:YES];
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
HQLLoginViewController *loginViewController = [storyboard instantiateViewControllerWithIdentifier:@"loginViewController"];
[self.navigationController pushViewController:loginViewController animated:YES];
跳轉(zhuǎn)到 Segue 連接的下一個(gè)視圖控制器：
[self performSegueWithIdentifier:@"ID_step2" sender:self];
