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iosuinavigationcontroller

Navigation Controller shows black screen


I was learning iOS dev and met some problems with Navigation Controller.

I created a SingleView application then use "Embed In Navigation Controller" to get a navigation control.

The problem I met is, after the app successfully build up, only the navigation bar is visible, other UI components are nothing but pure black. I've tried on real device, clean/rebuild, delete the app & re-build, all got the same result.

Below is the screenshot:

enter image description here

Screenshot of storyboard:

enter image description here

When Navigation Controller is clicked:

enter image description here

I have tried update the constraints and frames, so there's no amber triangle warnings.

"Is Initial View Controller" is already ticked.

Code:

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

=== UPDATE ====

It's my mistake to use a UINavigationController instead of UIViewController

Please see the accepted answer for details.


Solution

  • I looked at your code. In ViewController.h you have:

    @interface ViewController : UINavigationController <UITableViewDelegate, UITableViewDataSource>
    

    Just change that to

    @interface ViewController : UIViewController
    

    And it will show up!

    The navigation controller is trying to show another empty navigation controller! :)