NavigationController正在顯示另一個視圖控制器，而不是推送ViewController

Question

我有一個名為ViewController的主ViewController（如果我運行我的項目，它將首先運行）。 如果我按我的DetailViewController，它將顯示我的ViewController視圖。

這是我的部分代碼：

AppDelegate.m

ViewController *viewController = [[ViewController alloc] initWithNibName:Nil bundle:nil];
    self.navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.rootViewController = self.navigationController;
    [self.window makeKeyAndVisible];

Viewcontroller.m

DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:nil bundle:NULL];
    [self.navigationController pushViewController:detailVC animated:YES];

Answer 1

在“按鈕的操作”中實施此操作

DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];
[self.navigationController pushViewController:detailVC animated:YES];

您尚未使用其nib文件進行初始化

Answer 2

檢查以下代碼

DetailViewController *detailVC = [[DetailViewController alloc] init];
[self.navigationController pushViewController:detailVC animated:YES];