Question

我希望在我的iPhone应用程序中执行IBAction后显示特定的ViewController（或关闭）View。我试过了

[self.parentViewController.parentViewController dismissModalViewControllerAnimated:YES];

但是，一旦执行了该操作，这似乎就没有做任何事情。

更多信息：

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

{
    UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
    if (selectedCell.tag == 1)
    {

        UIActionSheet *actionSheet = [[UIActionSheet alloc]
                                      initWithTitle:@"Are you sure you want to delete this project?"
        delegate:self cancelButtonTitle:@"No" destructiveButtonTitle:@"Yes, I’m Sure" otherButtonTitles:nil];
        [actionSheet showInView:self.view];


    }

}

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    if (buttonIndex != [actionSheet cancelButtonIndex])
    {

        [self.tableView beginUpdates]; // Avoid  NSInternalInconsistencyException

        // Delete the project object that was swiped
        Project *projectToDelete = self.project;
        NSLog(@"Deleting (%@)", projectToDelete.name);
        [self.managedObjectContext deleteObject:projectToDelete];
        [self.managedObjectContext save:nil];

    }
}

当用户按下操作表上的“是”按钮时，我希望当前视图消失。

Answer 1

// Assume we are inside a UIViewController (or a subclass)

DestinationController *destinationController = [[DestinationController alloc] init];
[self presentModalViewController:destinationController animated:YES];

...

// Assume we are now in destination controller

// Dismiss
[self dismissModalViewControllerAnimated:YES];

Answer 2

我需要一直回到导航堆栈中的第一个（或根）视图。

我需要做的就是使用这种方法：

[controller.navigationController popToRootViewControllerAnimated:YES];

Answer 3

显示和关闭视图控制器的另一种方法是使用pushViewController和popViewController。

显示viewController：

- （void）pushViewController：（UIViewController *）viewController animated：（BOOL）animated; //使用水平幻灯片过渡。如果视图控制器已经在堆栈中，则无效。

并解雇：

- （UIViewController *）popViewControllerAnimated：（BOOL）动画; //返回弹出的控制器。

执行操作后显示或关闭特定的ViewController

3 个答案: