滑出式菜单 VC 上的黑屏

Question

我正在使用SWViewController Library。实现库时，我的 frontViewController 出现了，但我的 backViewController 是黑色的。我不知道是什么导致了这个问题，并且可以使用一些帮助。该应用程序完全使用 Objective C 编程。该应用程序没有 swift 也没有情节提要。

这是我的 backViewController.h 代码：

#import <UIKit/UIKit.h>

@interface RearViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

@property (nonatomic, retain) IBOutlet UITableView *rearTableView;

@end

rearViewController.m：

#import "RearViewController.h"

#import "SWRevealViewController.h"




@interface RearViewController()

{
    NSInteger _presentedRow;
}

@end

@implementation RearViewController

@synthesize rearTableView = _rearTableView;


#pragma mark - View lifecycle


- (void)viewDidLoad
{
    [super viewDidLoad];

    self.title = NSLocalizedString(@"Rear View", nil);
}

我的 appDelegate.h 代码：

@class SWRevealViewController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) TARootViewController  *rootViewController;
@property (strong, nonatomic) SWRevealViewController *viewController;

@property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
@property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;

- (void)saveContext;
- (NSURL *)applicationDocumentsDirectory;


@end

还有我的 appDelegate.m 代码：​​

    #import "AppDelegate.h"

    #import "SWRevealViewController.h"
    #import "RearViewController.h"

    @interface AppDelegate()<SWRevealViewControllerDelegate>
    @end

    @implementation AppDelegate

    @synthesize window = _window;
    @synthesize viewController = _viewController;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window = window;
    RearViewController *rearViewController = [[RearViewController alloc] init];
    TARootViewController *frontViewController = [[TARootViewController alloc] init];
    SWRevealViewController *revealController = [[SWRevealViewController alloc] initWithRearViewController:rearViewController frontViewController:frontViewController];
    revealController.delegate = self;

    self.window.rootViewController = revealController;
    [self.window makeKeyAndVisible];


    if (self.rootViewController.activeViewController == nil) {
        [[TAActiveUserManager sharedManager] startOrResumeAppSession];
    }


    // Register device for push notifications
    UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert |
                                                    UIUserNotificationTypeBadge |


    UIUserNotificationTypeSound);
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                                                             categories:nil];
    [application registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];

    return YES;
}

there is more here but it's not relevant to initializing the viewcontrollers

Answer 1

我也在 reddit 上问过这个问题，here 是回答我问题的线程。

事实证明，黑色是 SWRevealViewController 的默认 viewController 颜色 - 仅仅因为它是黑色并不意味着它没有正确加载。

Answer 2

我以前也遇到过这种情况。视图控制器的默认背景颜色是清晰的。确保您设置了背景或至少设置了窗口的背景颜色。在 AppDelegate.m 中：

self.window.backgroundColor = [UIColor whiteColor];

另外，我假设您在设置视图控制器 self.title 属性后需要导航控制器。当特定视图控制器位于堆栈顶部时，标题将显示在导航栏中。将视图控制器嵌入到导航控制器中很简单。将此替换为您设置 rootViewController 的行。

self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:revealController];