Ios 正在以意外状态完成导航转换。导航栏子视图树可能已损坏

我有两个不同的推送执行视图控制器，如下所示：

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{  

     indexPathRow = indexPath.row;  

     NSLog(@"indexPathRow.%d", indexPathRow);  

    safetyInventoryList.recordIdToEdit = [DeviceIdArray objectAtIndex:indexPathRow] intValue];  

    NSLog(@"Item selected..%d", inventoryList.recordIdToEdit);  

    [self performSegueWithIdentifier:@"DetailsViewController" sender:nil];  

}  



 -(IBAction)ViewScoreBtn:(id)sender {  

     [self performSegueWithIdentifier:@"ScoreViewController" sender:nil];  

 }  

当我在进入“viewscore”按钮->VC后单击“后退”按钮时，出现以下错误和黑屏

nested push animation can result in corrupted navigation bar  
Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.  
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't add self as subview'  

更新代码：在为赛格做准备时，我有以下内容（在我的演示VC中）：（.m）

及

在我介绍的VC（.h和.m）中：

@protocol dismissscoregate
-（作废）dismissScoreViewController:SafetyDeviceViewController；
@结束
@属性（非原子，赋值）id委托；
-（无效）视图将消失：（BOOL）已设置动画{
if（[self.navigationController.viewControllers indexOfObject:self]==NSNotFound）{
//导航按钮被按下。做一些事情
[self.delegate dismissScoreViewController]；
}
[超级视图将消失：动画]；
}  

---

那怎么了

1.注释导致此错误的执行顺序

2.管理项目

3.点击要执行导航的按钮/操作

4.检查重复或多段执行

---

我之所以这样做是因为单键操作的多段活动。

使用“展开段”而不是“弹出段”，它会很好地工作。

很抱歉，我是iOS新手，我没有完全理解它。我建议您阅读有关视图控制器的Apple文档：

 if([segue.identifier isEqualToString:@"ScoreViewController"]){  
        ScoreViewController *destViewController = segue.destinationViewController;  
        destViewController.delegate = self;  
    }  

 - (void)dismissScoreViewController:MVVMScoreViewController{  
    [self dismissViewControllerAnimated:YES completion: nil];  
 }  

@protocol dismissScoreDelegate <NSObject>  

 - (void)dismissScoreViewController:SafetyDeviceViewController;  

@end  
 @property (nonatomic, assign) id<dismissScoreDelegate> delegate;  

 -(void) viewWillDisappear:(BOOL)animated {
    if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
        // Navigation button was pressed. Do some stuff
        [self.delegate dismissScoreViewController];
     }
   [super viewWillDisappear:animated];
 }