Hi John,
your selector is missing colon:
@selector(back:)
for method:
-(IBAction)back:(id)sender
hth,
regards,
Peter Blazejewicz
On Thu, Feb 11, 2010 at 1:10 AM, John Michael Zorko <jmzo...@mac.com> wrote:
>
> Hello, all ...
>
> I've a question about the UINavigationController backBarButtonItem property.
> I wanted to merely set my own image for the back button, instead of it using
> the title of the controller above in the hierarchy. So, this is what I did
> (yes this app is using Three20, but I don't think that's the reason):
>
> - (id)initWithNavigatorURL:(NSURL *)URL query:(NSDictionary *)query
> {
> if (self = [super initWithNavigatorURL:URL query:query])
> {
> self.navigationItem.backBarButtonItem = [[[UIBarButtonItem
> alloc] initWithImage:[UIImage imageNamed:@"backarrow.png"]
> style:UIBarButtonItemStylePlain target:self action:@selector(back)]
> autorelease];
> }
>
> return self;
> }
>
> - (void)back:(id)sender
> {
> }
>
> Now, this worked -- but I wasn't _expecting_ it to work. I was expecting that
> my "back" selector would be called, and I would have to tell the nav
> controller to pop. However, my "back" selector isn't called, and the back
> button _works_ like it always has. While i'm not in any way against freebees
> like this, i'm a bit concerned as to _why_ it works like this. Any
> explanation would be appreciated, explanations that actually edify me more so
> :-)
>
> Regards,
>
> John
>
>
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