ABOUT UIBarButtonItems

Create outlet for UINavigationItemand UIBarButtonItems Run following code to remove [self.navItem setRightBarButtonItem:nil]; [self.navItem setLeftBarButtonItem:nil]; Run following codes to add buttons again [self.navItem setRightBarButtonItem:deleteItem]; [self.navItem setLeftBarButtonItem:addItem];

For Hiding:

[self.navigationItem.rightBarButtonItem setEnabled:NO];

[self.navigationItem.rightBarButtonItem setImage:nil];

For Showing:

[self.navigationItem.rightBarButtonItem setEnabled:YES];

[self.navigationItem.rightBarButtonItem setImage:image];