Error with customized button - ios

Question

I have an error:
2013-08-01 01:09:18.433 VstupHelper[28332:11303] -[VHMasterViewController popViewController:]: unrecognized selector sent to instance 0x7566410
2013-08-01 01:09:18.434 VstupHelper[28332:11303] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[VHMasterViewController popViewController:]:
Here is my code:
UIButton *bt=[UIButton buttonWithType:UIButtonTypeCustom];
[bt setFrame:CGRectMake(0, 0, 50, 30)];
[bt setImage:[UIImage imageNamed:#"menu.png"] forState:UIControlStateNormal];
[bt addTarget:self action:#selector(popViewController:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *leftButton=[[UIBarButtonItem alloc] initWithCustomView:bt];
self.navigationItem.leftBarButtonItem=leftButton;
self.navigationItem.leftBarButtonItem.target = self.revealViewController;
self.navigationItem.leftBarButtonItem.action = #selector(revealToggle:);
I'm not good at English, so I apologize if I'm hard to understand.

Answer 1

You have several problems:
1) You are calling popViewController: on what I asssume is a UIViewController subclass, when you should be calling it on your UINavigationController.
2) popViewController: takes a bool value for whether to animate that transition. With the action, it gets passed the sender by default.
3) You then reassign the target and action for the button (but these don't get called when you create the UIBarButtonItem using the initWithCustomView: initializer: See docs).
How to fix this:
1) Call a method you create for the button handler:
UIButton *bt=[UIButton buttonWithType:UIButtonTypeCustom];
[bt setFrame:CGRectMake(0, 0, 50, 30)];
[bt setImage:[UIImage imageNamed:#"menu.png"] forState:UIControlStateNormal];
[bt addTarget:self action:#selector(buttonTouched:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *leftButton=[[UIBarButtonItem alloc] initWithCustomView:bt];
self.navigationItem.leftBarButtonItem=leftButton;
2) In that method, pop the view controller, or do whatever you actually want to do:
- (void)buttonTouched:(id)sender
{
[self.navigationController popViewController:YES];
//Or what you assigned to the button action:
[self.revealViewController revealToggle:(not sure what you're supposed to have here)];
}