UISplitViewController不推送新的detailView时调用委托方法 [英] UISplitViewController not calling delegate methods while pushing new detailView

问题描述

我设置了基于Master-Detail应用程序的故事板，将详细视图嵌入到导航控制器中，并添加一个新的表视图控制器对象，我将用作第二个详细视图控制器。

I setup a storyboard based on the Master-Detail Application, embed the detail view in a navigation controller, and add a new table view controller object which I will use as a second detail view controller.

然后使用以下代码推动新的详细视图控制器（而不是segue），因为我同时推送根视图和细节视图控制器，只显示详细视图代码）

I then push the new detail view controller with the following code (instead of a segue because I am pushing both a root view and a detail view controller at the same time. Only the detail view code is shown).

// Push the detailView view controller:
NewClass *newViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"test"];

newViewController.navigationItem.hidesBackButton = YES;
self.splitViewController.delegate                = newViewController;

[self.detailViewController pushViewController:newViewController animated:YES];

这样做完美，EXCEPT表示拆分之前或之后从未调用splitView委托方法。如果我在纵向模式下执行此操作，则在推送detailViewController后，下拉主窗口按钮的按钮不显示UNTIL，我旋转到横向模式，然后回到纵向模式。

This works perfectly, EXCEPT that the splitView delegate methods are never called before or after the push. If I do this while in portrait mode, after it pushes the detailViewController, the button to drop down the masterView popover does not show up UNTIL I rotate to landscape mode and then back to portrait mode.

如何导致willHideViewController / willShowViewController分割视图控制器委托方法被调用或手动导致它们被调用？

How can I cause the willHideViewController/willShowViewController split view controller delegate methods to be called or manually cause them to be called?

推荐答案

所以从我发现，它不会调用方法，因为方向没有改变。

So from what I found, it doesn't call the method because the orientation hasn't changed.

你要做的是传递按钮从这个视图控制器已经被绑定到popover，如下所示：

What you have to do is to pass the button from the presenting view controller since it's already tied to the popover like this:

if(self.navigationItem.leftBarButtonItem != nil) {
    newViewController.navigationItem.leftBarButtonItem = self.navigationItem.leftBarButtonItem;
}

// Push the newViewController

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