Question

Ok so at the moment i have a navigation controller with a right button which logs a user in.

however I want to change the login button to logout once it has been clicked and this logout button will call a different IBAction.

to help visualize this.

As default, I have a right button on the navigation controller which says login, once this login button is pressed the ibaction login:(id)sender is pressed.

what i want to do is change the button to logout and call logout:(id)sender when it is clicked.

is this possible.

thanks.

Answer 1

You can just change what the button does when it is pressed:

- (void)login:(UIButton*)button {
    [button setTitle:@"Logout"];        
    [button setAction:@selector(logout:)];
}

- (void)logout:(UIButton*)button {
    [button setTitle:@"Login"];     
    [button setAction:@selector(login:)];
}

Alternately, since the button is on the UINavigationBar, you could instead do this:

-(IBAction)login:(id)sender{
UIBarButtonItem *logoutButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                                                            target:self
                                                                            action:@selector(logout:)];
[[self navigationItem] setRightBarButtonItem:logoutButton];
[logoutButton release];
}

-(IBAction)logout:(id)sender{
UIBarButtonItem *loginButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                                                            target:self
                                                                            action:@selector(login:)];
[[self navigationItem] setRightBarButtonItem:loginButton];
[loginButton release];
}