memory leak in singleton class - iphone

Question

I am new to iPhone development.
I am developing an application in which I am using Single tone class.
When I am creating an object of single tone class it is giving me memory leak on analyzing my code. It is giving message as "Potential leak of an object" and "Allocated object is not referenced later". But I am using that object in my code.
following is my code where I have created single tone class object
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(#"Inside View");
self.navigationController.navigationBar.topItem.title = #"Menu List";
UIImage *image = [UIImage imageNamed:#"Navigation_bar.png"];
[_bgImage setFrame:CGRectMake(0,-45,320,510)];
[self.navigationController.navigationBar setBackgroundImage:image
forBarMetrics:UIBarMetricsDefault];
[self.tabBarController.tabBar setBackgroundImage:[UIImage imageNamed:#"Tab_bar.png"]];
[self.navigationItem setHidesBackButton:YES];
menuTableView.backgroundColor=[UIColor clearColor];
menuTableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
_hotelMenu=[SharedHotelMenu sharedInstanceMethod];
_queryFormatter=[[DatabaseQueryFormatter alloc]init];
_isSearchOn=NO;
_searchResult=[[NSMutableArray alloc]init];
_categorySearch.layer.cornerRadius = 19;
_categorySearch.clipsToBounds = YES;
_categorySearch.delegate=self;
UIView *_paddingView=[[UIView alloc] initWithFrame:CGRectMake(0,0,5,10)];
_categorySearch.leftView=_paddingView;
_categorySearch.leftViewMode=UITextFieldViewModeAlways;
[_paddingView release];
UIView *_paddingRightView=[[UIView alloc] initWithFrame:CGRectMake(0,0,30,10)];
_categorySearch.rightView=_paddingRightView;
_categorySearch.rightViewMode=UITextFieldViewModeAlways;
[_paddingRightView release];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(searchBar)
name:UITextFieldTextDidChangeNotification object:_categorySearch];
}
}
I have created single tone class object as _hotelMenu=[SharedHotelMenu sharedInstanceMethod];

Answer 1

As far as I can see in your code is that this line may cause memory leak
menuTableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
As this is #property(nonatomic, retain) UIView *tableFooterView and it will retain your object and thus retain count becomes 2.
Use this
UIView *footerView = [[UIView alloc] initWithFrame:CGRectZero];
menuTableView.tableFooterView = footerView;
[footerView release];