UINavigationController并呈现模态控制器 [英] UINavigationController and presenting a modal controller
问题描述
如果有一个显示UIScrollView全屏的rootViewController。当我点击UIScrollview时，我想翻转屏幕并显示一个设置屏幕（也有第二个屏幕，导航控制器的原因）。
If got a rootViewController which display's a UIScrollView full screen. When I tap the UIScrollview, I want to flip the screen and display a settings screen (which also has a second screen, the reason for the navigationController).
我能够使用rootViewController中的以下代码显示设置屏幕：
self.navController = [[UINavigationController alloc]
initWithRootViewController：self.settingsViewController];
I am able to display the settings screen by using the following code in my rootViewController:
self.navController = [[UINavigationController alloc]
initWithRootViewController:self.settingsViewController];
而不是：
[self.navController pushViewController：self .settingsViewController animated：YES];
我的问题是：当我在设置视图中完成后，如何返回rootViewController，所以我在其中创建导航控制器的控制器类，因此不在堆栈中。
My question is: When I'm done in my settings view, how do I return back to the rootViewController, so the controller class in which I have created the navigation Controller and is therefore not on the stack.
推荐答案
我采用了Apple的解决方案他们在节拍器示例中使用它。
I've adopted Apple's solution which they use in the Metronome example.
我将settingsViewController设置为navigationController的rootViewController。比我使用以下方式显示navigationController：
I'm setting the settingsViewController as the rootViewController for a navigationController. Than I display the navigationController using:
[self presentModalViewController：navController animated：YES];
根据apple的例子，我创建了一个settingsViewControllerDelegate接口，rootViewController采用了该接口。接口并不复杂，只需要一个委托实例var和一个需要由rootViewController实现的回调方法（settingsViewControllerDidFinish）。在那个方法中你打电话：
As per apple's example, I've created a settingsViewControllerDelegate interface which the rootViewController adopts. The interface is not complicated, just a delegate instance var and a callback method (settingsViewControllerDidFinish) which needs to be implemented by rootViewController. In that methode you call:
[self dismissModalViewControllerAnimated：YES];
这样我就可以使用navigationController进行几个设置屏幕，我可以返回从navigationController返回到rootViewController。
This way I'm able to have a couple of settings-screens using a navigationController and I'm able to return out of the navigationController back to the rootViewController.
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