How can I show UIActionSheet to confirm moving back in Navigation View

Question

Using Xcode I have View A that navigates to View B.

Upon pressing the Back UIBarButtonItem, I'm trying present the user with a UIActionSheet to confirm navigation to move back to View A.

What do I need to do in code to stop the view from navigating back and then (depending on user input) move back or stay on the current screen?

Answer 1

add a backbutton programmatically.

eg.

UIButton *backBtn= [[UIButton alloc] initWithFrame:CGRectMake(0,0,54,30)];
 [backBtn addTarget:self action:@selector(backButtonPressed:)forControlEvents:UIControlEventTouchUpInside];
 UIBarButtonItem *backBarButton = [[UIBarButtonItem alloc] initWithCustomView:backBtn];   
[backBtn release];
 [[self navigationItem] setLeftBarButtonItem:backBarButton];
 [backBarButton release];

  //backButtonPressed is the selector for backBtn

Then present you ActionSheet from that selector and based on user either navigate to previous viewController or dont.

To navigate to previous page, use popViewMethod.

`