Question

I have 2 views, TableController and WirelessController. While in TableController I need to pop the WirelessController view. This is what I’ve tried and nothing happens, no console output either.

WirelessController *wCon = [[WirelessController alloc] init];
[[wCon navigationController] popViewControllerAnimated:YES];

and this has the same problem.

[self navigationController] popViewControllerAnimated:YES];

Is it the fact that I’m using the UINavigationController when it’s a view based app?

Answer 1

I think you mean to push, not pop…

WirelessController *wCon = [[WirelessController alloc] init];

[[self navigationController] pushViewControllerAnimated:YES];

Push adds a new item to the top of the stack; pop removes the top item from the stack.

Update

From your comments it seems that…

• your first view is an instance of WirelessController.

• from there you present a TableController modally

• now you want to return to you wirelessController.

In this case you need to send a message back to the presenting view controller (wirelessController) asking it to dismiss the view controller it has presented (tableController)

In tableController:

  [self presentingViewController] dismissViewControllerAnimated:YES 
                                                     completion:nil]];

Whatever is going on, you certainly don’t want to do this:

WirelessController *wCon = [[WirelessController alloc] init];

This line will create a new object. You want to return to an existing object.

Pushing and popping viewControllers is an activity generally associated with navigation controllers, which keep an array of managed viewControllers. In that case you would push to add a new controller to the top of the stack, and pop to remove it from the stack. In the absence of a navigation controller, there is no such stack, so push and pop make no sense.