custom Back Button image on the Navigation Bar doesn't Work ! [iPhone SDK]

Question

Hi guys i create a custom navigation back button , but when i add this code , my back animation doesn't work and go back with animation .why ? i think it depends on my @selector action !

- (void)viewDidLoad {


    UIButton *button =  [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:[UIImage imageNamed:@"goback.png"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(//HERE ! i don't know put what thing !) forControlEvents:UIControlEventTouchUpInside];
    [button setFrame:CGRectMake(0, 0, 32, 32)];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];


}

Answer 1

ok i created a function and works fine :D :

-(void)pushNav {
[self.navigationController popViewControllerAnimated:YES];  
}