Button States - Normal, Selected, Highlighted

- (void)viewDidLoad

{

    [super viewDidLoad];

[btn_menuicon setBackgroundImage:[UIImage imageNamed:@"icon.png"] forState:UIControlStateNormal];

    [btn_menuicon setBackgroundImage:[UIImage imageNamed:@"selected_icon.png"] forState:UIControlStateHighlighted];

    [btn_menuicon setBackgroundImage:[UIImage imageNamed:@"selected_icon.png"] forState:UIControlStateSelected];

    [btn_menuicon setSelected:NO];

}

-(IBAction)menu_Action:(id)sender

{

    if(btn_menuicon.selected == NO)

    {

[btn_menuicon setSelected:YES];

}

else

    {

[btn_menuicon setSelected:NO];

}

}