Ios 如何以编程方式使用推送视图导航？

我有以下4个视图控制器：

家 组 项目 细节 我正在使用“主页->组”和“组->项目”的模式视图导航。现在，我想使用“项目->详细信息”的推式视图控制器。因为，我正在传递“组->项目”的组id以显示组特定的项目。因此，“项目”是动态的。我不想为“详细信息->项目”复制“项目”，以便从详细信息返回到项目

我怎样才能做到呢

编辑

以下是显示项目页面的代码：

@implementation RpFoodList
@synthesize gid;

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self loadFoodList];
}

- (void) loadFoodList
{
    RpDb *rpDb = [[RpDb alloc] init];

    int groupID = [self gid];

    UIImage *iconLeft = [UIImage imageNamed:@"arrow_left.png"];
    UIImage *iconLeftH = [UIImage imageNamed:@"arrow_left_h.png"];
    UIButton *btnLeft;
    UIButton *button;
    UILabel *sep;

    int bulletWidth = 40;
    int rowHeight = 32;

    NSMutableArray *foods = [rpDb getGroupFoods:groupID];

    [groupTitle setText:[NSString stringWithFormat:@"Group Details (%d)", [foods count]]];

    int counter = 0;
    int contentSize = 0;

    for(NSMutableDictionary *food in foods)
    {        
        NSNumber *foodID = [food valueForKey:@"foodID"];
        int tag = [foodID intValue];
        NSNumber *groupID = [food valueForKey:@"groupID"];
        NSString *foodName = [food valueForKey:@"foodName"];
        NSString *foodNameAr = [food valueForKey:@"foodNameAr"];

        btnLeft = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        btnLeft.frame = CGRectMake(0, rowHeight*counter+1, bulletWidth, rowHeight);
        [btnLeft setImage:iconLeft forState:UIControlStateNormal];
        [btnLeft setImage:iconLeftH forState:UIControlStateHighlighted];
        [btnLeft addTarget:self action:@selector(showFoodDetails:) forControlEvents:UIControlEventTouchUpInside];
        btnLeft.tag = tag;

        button = [UIButton buttonWithType:UIButtonTypeCustom];
        button.frame = CGRectMake(bulletWidth, rowHeight*counter+1, self.view.frame.size.width-bulletWidth, rowHeight);
        [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        [button setTitle:foodNameAr forState:UIControlStateNormal];
        button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
        button.contentEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 10);

        counter++;

        contentSize += rowHeight + 1;

        sep = [[UILabel alloc] init];
        [sep setFrame:CGRectMake(0, rowHeight*counter+1, self.view.frame.size.width, 1)];
        [sep setBackgroundColor: [UIColor lightGrayColor]];

        [scrollView addSubview:button];
        [scrollView addSubview:btnLeft];
        [scrollView addSubview:sep];
    }

    scrollView.contentSize = CGSizeMake(self.view.frame.size.width, contentSize);

}

- (IBAction)showFoodDetails:(id)sender
{
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    RpFoodDetails *foodDetails = (RpFoodDetails*)[storyboard instantiateViewControllerWithIdentifier:@"RpFoodDetails"];
    foodDetails.fid = [sender tag];
    foodDetails.gid = [self gid];
    [self presentModalViewController:foodDetails animated:YES];
}

---

根据我的理解，这很简单，您需要group类和items类，从group中，您将group对象传递给items，生成item对象NSArray并填充UITable视图，然后将相同的item对象传递给detail页面，当您从detail页面返回items页面时，所有项目都将在数组中，并为您填充，直到返回组页面

---

根据我对问题的理解，我的回答是，根据我的理解，您有一个由项目数组组成的组数组

NSMutableArray*foods=[rpDb getGroupFoods:groupID]

此行返回基于组id的项目数组

所以在Items detail VC中，您需要从Items VC传递foodId

---

要使其在本质上是动态的，您需要在ViewWillDisplay中调用与数据库相关的操作。此外，还要清除阵列中的旧数据。

您是说，当您从详细信息返回时，您担心您不知道要显示哪些项目？如果这是您关心的问题，则不会成为问题，因为视图控制器仍在堆栈中。我无法理解您的问题。是的。当我从“详细信息”返回到项目时，会出现空白屏幕。我使用了“导航栏”和“栏按钮项”作为后退按钮。@Mosiur在项目VC的ViewWillDisplay或ViewDidDisplay中发生了什么？您是通过调用WS还是通过DB重新加载项目？显示您的代码。@Amar我已编辑问题以提供代码。请查收。