在弹出窗口视图中从按钮调用另一个视图

Question

我有一个searchcontrollerviewcontroller，detailviewcontroller和一个filterviewcontroller

在Appdelegate中，我添加了前两个作为splitview控制器并委托给detailviewcontroller，如下所示：

self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:searchViewController, detailNavigationController, nil];

当ipad转动时，它会显示popoverview的按钮

- (void)splitViewController:(UISplitViewController *)splitController
     willHideViewController:(UIViewController *)viewController
          withBarButtonItem:(UIBarButtonItem *)barButtonItem
       forPopoverController:(UIPopoverController *)popoverController{  

    UIBarButtonItem *filterbutton = [[UIBarButtonItem alloc]initWithTitle:@"Filter"     style:UIBarButtonItemStylePlain target:nil action:@selector(showFilterPopover:)];

    barButtonItem.title = NSLocalizedString(@"Search", @"Search results");
    [self.navigationItem setLeftBarButtonItems:[NSArray arrayWithObjects:barButtonItem,filterbutton, nil] animated:YES];

    self.masterPopoverController = popoverController;
}

我在这里初始化过滤器视图

-(void)showFilterPopover: (id) sender{

    FilterViewController *controller = [[FilterViewController alloc]initWithNibName:@"FilterViewController" bundle:nil];

    UIPopoverController *popover =
    [[UIPopoverController alloc] initWithContentViewController:controller];

    popover.delegate = self;
    self.masterPopoverController = popover;


    [self.masterPopoverController
         presentPopoverFromBarButtonItem:sender
                permittedArrowDirections:UIPopoverArrowDirectionAny
                                animated:YES];
}

但没有任何反应，popover适用于detailview但不适用于filterview .... 我忘记了什么吗？