从第三个视图控制器弹出到第一个视图控制器（根视图控制器）

发布于 2024-08-29 22:21:14 字数 778 浏览 2 评论 0原文

我正在使用一个导航栏，根据用户选择的内容推送多个视图。现在我需要从第三个控制器弹出到第一个视图控制器。应用程序弹出到第一个视图控制器，但导航项没有像第二个一样更改视图控制器但是，我需要更改 navigationItems。

我使用的代码：appdelagte.h

Bool isDelete;
@property(nonatomic)Bool isDelete;

appDelegate.mthirdViewController

@synthesize isDelete;

：

-(void)viewWillAppear:(Bool)animated {
  appDelegate.isDelete=YES;
  [self.navigationController popViewControllerAnimated:YES];
}

secondViewController.m

-(void)viewWillAppear:(Bool)animated {
    if(appDelegate.isDelete==YES)
    {
        [self.navigationController popViewControllerAnimated:YES];
    }
}

这里弹出到第一个视图控制器，但navigationItems没有像在第二个视图控制器中那样被更改

任何人都可以帮助我解决这个问题。提前致谢。

原文

I am using a navigation bar on which I push several views according to what the user selects.Now I need to pop to first view controller from third controller.The applications pop to first view controller but navigationItems are not been changed as it is in second view controller but, I need to change navigationItems.

Code that I used: appdelagte.h

Bool isDelete;
@property(nonatomic)Bool isDelete;

appDelegate.m

@synthesize isDelete;

thirdViewController:

-(void)viewWillAppear:(Bool)animated {
  appDelegate.isDelete=YES;
  [self.navigationController popViewControllerAnimated:YES];
}

secondViewController.m

-(void)viewWillAppear:(Bool)animated {
    if(appDelegate.isDelete==YES)
    {
        [self.navigationController popViewControllerAnimated:YES];
    }
}

Here pop to first view controller but navigationItems are not being changed as it is in secon view controller

Any one help me to solve this.Thanks in advance.

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醉酒的小男人 2024-09-05 22:21:14

也许你可以在不显示第三个 ctrl 的情况下执行此行为？就像在第二个 ctrl 中检查 if(appDelegate.isDelete==YES) 一样。

- (void) showThird {
    if(appDelegate.isDelete == NO) {
        MyThirdCtrlClss *ctrl = [[MyThirdCtrlClss alloc] init];
        [self.navigationController pushViewController:ctrl animated:YES];
        [crel release];
    } else {
        [self.navigationController popToRootViewControllerAnimated:YES];
    }
}

May be you can do this behavior without showing third ctrl? Like do this check if(appDelegate.isDelete==YES) in second ctrl.

- (void) showThird {
    if(appDelegate.isDelete == NO) {
        MyThirdCtrlClss *ctrl = [[MyThirdCtrlClss alloc] init];
        [self.navigationController pushViewController:ctrl animated:YES];
        [crel release];
    } else {
        [self.navigationController popToRootViewControllerAnimated:YES];
    }
}

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