SWRevealViewController侧边栏菜单按钮不起作用

Question

SWRevealViewController菜单按钮仅在第一次加载视图时有效。但是，只要单击搜索按钮，它就不会再滑出。在调试过程中，我尝试将搜索按钮的功能更改为重新加载功能，以便进行测试。然后我发现我仍然在菜单按钮中遇到同样的错误。它从未滑出。

以下是搜索按钮和菜单按钮的代码。

//Original Code
_searchButton.layer.cornerRadius = 5;
_searchButton.layer.masksToBounds = YES;
[_searchButton addTarget:self action:@selector(searchHospital) forControlEvents:UIControlEventTouchDown];

//Modified Code
_searchButton.layer.cornerRadius = 5;
_searchButton.layer.masksToBounds = YES;
[_searchButton addTarget:self action:@selector(reloadThisView) forControlEvents:UIControlEventTouchDown];       

//definition for reloadThisView
- (void)reloadThisView {
    [self viewDidLoad];
}

//code for Menu bar button item; in viewDidLoad
SWRevealViewController *revealController = [self revealViewController];

UIImage *myImage = [UIImage imageNamed:@"menu-tab.png"];
myImage = [myImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

UIBarButtonItem *rightRevealButtonItem = [[UIBarButtonItem alloc] initWithImage:myImage style:UIBarButtonItemStylePlain target:revealController action:@selector(rightRevealToggle:)];

self.navigationItem.rightBarButtonItem = rightRevealButtonItem;

UIBarButtonItem * item = [[UIBarButtonItem alloc] initWithCustomView:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"new-logo"]]];
self.navigationItem.leftBarButtonItem = item;

现在的问题是;在SWRevealViewController类上运行菜单按钮会出现故障的可能原因是什么？