在标题栏添加多个按钮
UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 150, 45)];
[tools setTintColor:[self.navigationController.navigationBar tintColor]];
[tools setAlpha:[self.navigationController.navigationBar alpha]];
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:2];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
target:self actionselector(clickSettings:)];
UIBarButtonItem *anotherButton1 = [[UIBarButtonItem alloc] initWithTitle"Edit" style:UITabBarSystemItemContacts
target:self actionselector(clickEdit:)];
[buttons addObject:anotherButton];
[anotherButton release];
[buttons addObject:anotherButton1];
[anotherButton1 release];
[tools setItems:buttons animated:NO];
[buttons release];
UIBarButtonItem *myBtn = [[UIBarButtonItem alloc] initWithCustomView:tools];
self.navigationItem.rightBarButtonItem = myBtn;
[myBtn release];
[tools release];