导航控制器显示黑屏

Question

我在学习 iOS 开发时遇到了导航控制器的一些问题。

我创建了一个 SingleView 应用程序，然后使用“嵌入导航控制器”来获取导航控件。

我遇到的问题是，app搭建成功后，只有导航栏可见，其他UI组件都是纯黑色的。我已经在真实设备上尝试过，清理/重建，删除应用并重新构建，都得到了相同的结果。

下面是截图：

故事板截图：

当导航控制器被点击时：

我已经尝试更新约束和框架，所以没有琥珀色三角形警告。

“是初始视图控制器”已经打勾。

代码：

AppDelegate.m

#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

AppDelegate.h

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@end

=== 更新 ====

使用UINavigationController 而不是UIViewController 是我的错误

有关详细信息，请参阅已接受的答案。

Answer 1

我查看了您的代码。在 ViewController.h 你有：

@interface ViewController : UINavigationController <UITableViewDelegate, UITableViewDataSource>

把它改成

@interface ViewController : UIViewController

它会出现的！

导航控制器正在尝试显示另一个空导航控制器！ :)