如果其他人正在尝试做同样的事情,我将离开一个实现,在SplitViewController中将UINavigationController作为Detail VC并在每个视图控制器的顶部都有按钮,当您浏览以显示/隐藏主VC:
您的详细VC必须实现以下协议(所以你需要@synthesize
的barButtonItem):
@protocol SplitViewBarButtonItemPresenter <NSObject>
@property (nonatomic, strong) UIBarButtonItem *barButtonItem;
@end
你需要抓住并保持barButtonItem从willHideViewController通过:在你的细节VC,但你必须在主VC中完成。使用以下在您的主VC:
- (BOOL) splitViewController:(UISplitViewController *)sender
shouldHideViewController:(UIViewController *)vc
inOrientation:(UIInterfaceOrientation)orientation {
return YES;
}
- (void)splitViewController:(UISplitViewController *)svc
willHideViewController:(UIViewController *)aViewController
withBarButtonItem:(UIBarButtonItem *)barButtonItem
forPopoverController:(UIPopoverController *)pc {
barButtonItem.title = self.title;
[self splitViewBarButtonItemPresenter].barButtonItem = barButtonItem;
}
- (void)splitViewController:(UISplitViewController *)svc
willShowViewController:(UIViewController *)aViewController
withBarButtonItem:(UIBarButtonItem *)barButtonItem
forPopoverController:(UIPopoverController *)pc {
[self splitViewBarButtonItemPresenter].barButtonItem = nil;
}
- (id <SplitViewBarButtonItemPresenter>) splitViewBarButtonItemPresenter {
id detailVC = [self.splitViewController.viewControllers lastObject];
if ((![detailVC isKindOfClass:[MainDetailVC class]]) || (![detailVC conformsToProtocol:@protocol(SplitViewBarButtonItemPresenter)])) {
detailVC = nil;
}
return detailVC;
}
在每一个你想要的按钮显示视图控制器,使用下面的代码(你也可以把它放进一个类,从它继承,如果他们都同一类型):
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
UIBarButtonItem *newBtn = [[UIBarButtonItem alloc]
initWithTitle:@"Show Master MC" // might want a better title
style:UIBarButtonItemStylePlain
target:self action:@selector(forceOpenMasterVC)];
self.navigationItem.rightBarButtonItem = newBtn;
}
-(void)forceOpenMasterVC {
[((MainDetailVC *) self.navigationController) forceOpenMasterVC];
}
然后在您的详细信息VC,使用以下命令:
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
// Above line is needed because of self.barButtonItem.action
// It doesn't leak as far as I can tell
-(void)forceOpenMasterVC {
// Grab the Master VC
UIViewController * vc = [[self.splitViewController viewControllers] objectAtIndex:0];
if (self.barButtonItem) {
[self.barButtonItem.target
performSelector:self.barButtonItem.action
withObject: self.barButtonItem];
}
}
如果任何人有一个更好的办法,请包括它。