为啥嵌入 UINavigationController 时不再显示 UITableView

Posted 2023-03-12

【中文标题】为啥嵌入 UINavigationController 时不再显示 UITableView

【英文标题】：Why does not it display UITableView anymore when embed UINavigationController为什么嵌入 UINavigationController 时不再显示 UITableView

【发布时间】：2015-03-31 08:20:36

【问题描述】：

我是 ios 开发新手。我现在正在学习 Swift。我目前有一个问题，即添加导航视图控制器后，我的 tableView 不再显示任何内容。我不明白为什么。请高手帮帮我！！

class AppDelegate: UIResponder, UIApplicationDelegate 

var window: UIWindow?


func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 
    // Override point for customization after application launch.

    let mainVC = ViewController()
    let navigationVC = UINavigationController(rootViewController: mainVC)
    window?.rootViewController = navigationVC;
    window?.makeKeyAndVisible()
    return true

ViewController 中的代码：

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource 
@IBOutlet var myTable: UITableView!
var items: [String] = ["Date Picker","List of Data","Slider","Show Image", "Web Display"];

override func viewDidLoad() 
    super.viewDidLoad()

    NSLog("Hello World at console");
    var nib = UINib(nibName: "ListCell", bundle: nil)
    myTable?.registerNib(nib, forCellReuseIdentifier: "ListCell")
    // Do any additional setup after loading the view, typically from a nib.

【参考方案1】：

如果您使用故事板，请使用它的实例化方法，并在故事板中设置控制器的故事板ID

YourController *vc = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"ControllerStoryboardId"];

如果是xib文件

YourController *vc = [[YourController alloc] initWithNibName:@"YourController" bundle:[NSBundle mainBundle]];