Storyboard Segue From View Controller to Itself

问题

I am trying to make a mechanism to drill down a file / folder list. The idea is to show the same file list view controller every time the user selects a folder, and show a file detail view controller if he/she selects a file.

So far, I have created a segue from the file list view controller to the file detail view controller, and a segue from the file list table view cell to the the file list table view controller:

The issue with this is that as soon as the user taps the cell, the segue is executed. I would like to remove the segue from the table view cell and make one from the file list view controller to itself. That way, I could trigger the right segue programmatically when the user tapped the cell.

So, my question is: Is it possible to create a segue from a view controller to itself in Interface Builder?

回答1:

I developed a method to create a segue using a phantom button. I believe it will solve your problem. You can read about it in my answer here.

回答2:

If you are using a navigation controller you need to push the ViewController into the nav stack. In this example, i named my ViewController "VDI" in my Storyboard ID setting.

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle: nil];
YourVC *dest = [storyboard instantiateViewControllerWithIdentifier:@"VDI"];
[self.navigationController pushViewController:dest animated:YES];

If you don't want the NavigationController to keep adding itself into your "Back" history you can pop the stack before adding to it like so.

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle: nil];
YourVC *dest = [storyboard instantiateViewControllerWithIdentifier:@"VDI"];
UINavigationController *navController = self.navigationController;
[navController popViewControllerAnimated:NO];
[navController pushViewController:dest animated:YES];

回答3:

Using Xcode 5 there is a much simpler solution.

1. Click the table cell in the storyboard
2. Open the Connections Inspector (right arrow icon in the upper right)
3. Under "triggered segues" you see "selection"
4. Drag from the circle next to "selection" to the cell in the storyboard

That's it.

回答4:

Instead of performing a segue to the same controller, you can instantiate a view controller (the same one) from storyboard, and then push that onto the navigation controller.

回答5:

Interface Builder approach: Just segue to a storyboard reference which refers back to the presenting view controller.

回答6:

In IOS 6, there is a cleaner solution than using a phantom button. You can still define the segue from the table cell to the view controller, and look at the sender to cancel the automatically triggered segue:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    //storyboards should use segues and override prepareForSegue instead
    //but here we need custom logic to determine which segue to use
    id item = [self.fetchedResultsController objectAtIndexPath:indexPath];
    if (item meets condition) {
        [self performSegueWithIdentifier:@"segue1" sender:self];
    } else {
        [self performSegueWithIdentifier:@"segue2" sender:self];
    }
}

- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender {
    //ignore segue from cell since we we are calling manually in didSelectRowAtIndexPath
    return (sender == self);
}

回答7:

The correct answer is to use a Storyboard Reference that is referencing the UIViewController you want to segue to itself and then point the segue at it.

回答8:

Here's how you can push another instance of the current view controller without defining a segue or hardcoding its own identifier:

SameViewController *same = [self.storyboard instantiateViewControllerWithIdentifier: self.restorationIdentifier];
[self.navigationController pushViewController: same animated: YES];

You just need to set the Restoration ID to be the same as Storyboard ID (there's a checkbox for that in IB).

回答9:

Hope this helps.

I found that you can create multiple prototype cells.

Than you can link every cell (in the Storyboard) to a different View.

Something like this:

NSString *CellIdentifier = @"Cell"; 
if (Condition2 ){
CellIdentifier = @"Cell2"; } 
if (Condition3 ){
CellIdentifier = @"Cell3"; }

来源：https://stackoverflow.com/questions/9226983/storyboard-segue-from-view-controller-to-itself