关闭当前视图控制器后无法 pushViewController

Question

我有FavouriteViewController，其中我有一个单击按钮时的按钮，我正在呈现一个名为LoginViewController 的视图（使用故事板）。

在此页面上（LoginViewController），我再次有按钮，单击该按钮我将关闭我的模态视图控制器，在关闭后我再次返回FavouriteViewController，当我尝试推送我的视图时，现在在此页面上它不推动的控制器。

这是我的代码 sn-p，

----- 第 1 部分 -----

FavoriteViewController.m

- (IBAction)LoginClicked:(id)sender {
      NSLog(@"--- Navigated to LoginViewController ---");
    //Navigates to `LoginViewController` using storyboard..
}

LoginViewController.m

- (IBAction)LoginViaFb:(id)sender{

         NSLog(@"--- Inside LoginViafb ---");
         [self dismissViewControllerAnimated:YES completion:NULL];

         FavoriteTabViewController *fav=[[FavoriteTabViewController alloc] init];
         [fav Loginsuccessfull];
}

FavoriteViewController.m

-(void)Loginsuccessfull{
    NSLog(@"--- Inside Loginsuccessfull ---");

    UserDetailsViewController *user=[[UserDetailsViewController alloc] init];
    [self.navigationController pushViewController:user animated:NO];
}

我的日志显示：

--- Navigated to LoginViewController ---
--- Inside LoginViafb ---
--- Inside Loginsuccessfull ---

请帮忙，提前致谢。

----- 第 2 部分 -----：

** 我也试过了：**

我的 LoginViewController.m

中的代码

- (IBAction)LoginViaFb:(id)sender{

         NSLog(@"--- Inside LoginViafb ---");
         [self dismissViewControllerAnimated:YES completion:NULL];

         FavoriteTabViewController *fav=[[FavoriteTabViewController alloc] init];
         fav.GoLogin=@"some values"; 
}

在 FavoriteViewController.m

-(void)viewDidAppear:(BOOL)animated{
    NSLog(@"some values --- %@",some values);

     if ([GoLogin isEqualToString:@"some values"]) {
           NSLog(@"Method called");
        [self.navigationController pushViewController:[[UserDetailsViewController alloc] init] animated:NO];
    }

} 

但还是没用，显示some values --- null

Answer 1

这就是我对你说的。

FavoriteViewController.m

- (IBAction)LoginClicked:(id)sender {
    NSLog(@"--- Navigated to LoginViewController ---");

    loginVcObc.logindelegate = self;    
}

 #pragma mark LoginDelegate

 - (void)loginSuccessfull {
        UserDetailsViewController *user=[[UserDetailsViewController alloc] init];
       [self.navigationController pushViewController:user animated:NO];
   }

LoginViewController.h

#import <UIKit/UIKit.h>

@protocol LoginDelegate;    
@interface LoginViewController : UIViewController

@property (assign) id <LoginDelegate> logindelegate;

@end

@protocol LoginDelegate <NSObject>

- (void)loginSuccessfull;

@end

LoginViewController.m

#import "LoginViewController.h"

@implementation LoginViewController

@synthesize logindelegate;

- (IBAction)LoginViaFb:(id)sender{

     NSLog(@"--- Inside LoginViafb ---");
    if (self.logindelegate) {
       [self.logindelegate loginSuccessfull];
  }
    [self dismissViewControllerAnimated:YES completion:NULL];


}