如果其他人正在嘗試做同樣的事情,我將離開一個實現,在SplitViewController中將UINavigationController作爲Detail VC並在每個視圖控制器的頂部都有按鈕,當您瀏覽以顯示/隱藏主VC:
您的詳細VC必須實現以下協議(所以你需要@synthesize
的barButtonItem):
@protocol SplitViewBarButtonItemPresenter <NSObject>
@property (nonatomic, strong) UIBarButtonItem *barButtonItem;
@end
你需要抓住並保持barButtonItem從willHideViewController通過:在你的細節VC,但你必須在主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;
}
在每一個你想要的按鈕顯示視圖控制器,使用下面的代碼(你也可以把它放進一個類,從它繼承,如果他們都同一類型):
-(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];
}
然後在您的詳細信息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];
}
}
如果任何人有一個更好的辦法,請包括它。