iOS:“单向"广告的最佳做法导航控制器? [英] iOS: Best practices for a "one-way" navigation controller?
问题描述
我正在开发一个应用程序，该应用程序实质上是许多不同测试的序列(为简单起见，请考虑SAT测试或Mensa测试).每个测试都在不同的View + View Controller中实现.
I'm developing an app which is essentially a sequence of many different tests (for simplicity, think about an SAT test or a Mensa test). Each test is implemented in a different View+View Controller.
最初，我想使用Storyboards和UINavigationControllers来管理测试的顺序和它们之间的转换，但是现在我在质疑这种方法的有效性. UINavigationController是一个堆栈，而我的导航仅是单向的(一旦完成测试，就无法返回).有没有更好的方法来实现该应用程序?我还能以某种方式利用分镜脚本吗?
Initially I wanted to use Storyboards and UINavigationControllers for managing the sequence of the tests and the transitions between them, but now I'm questioning the validity of this approach. A UINavigationController is a stack while my navigation is one-way only (once you've completed a test you can't go back). Is there a better way to implement the app? Can I still leverage Storyboards somehow?
推荐答案
我将使用自定义容器视图控制器.因此，在您的主场景中，添加一个容器视图".如果目标是iOS6，则在编辑情节提要时，会有一个特殊的容器视图"对象，您现在可以将其拖动到自定义容器视图控制器的场景上:
I'd use a custom container view controller. So to your main scene, add a "container view". If your target is iOS6, then when editing your storyboard there is a special "container view" object that you can now drag onto your custom container view controller's scene:
如果是iOS 5，则(a)您必须手动创建第一个子场景； (b)为它提供一个唯一的故事板ID(在我的示例中为InitialChild，并且(c)您手动实例化该第一个子控制器，并以编程方式将其添加为子代.因此，假设您有一个名为containerView的UIView在自定义容器视图控制器的场景中，您可以使用类似以下方法:
If iOS 5, then (a) you have to create the first child scene manually; (b) give it a unique storyboard id (in my example, InitialChild, and (c) you manually instantiate that first child controller and add it as a child programmatically. Thus, assuming you have a UIView called containerView in your custom container view controller's scene, you can have a method like:
- (void)addInitialChild
{
UIViewController *child = [self.storyboard instantiateViewControllerWithIdentifier:@"InitialChild"];
[self addChildViewController:child];
child.view.frame = self.containerView.bounds;
[self.containerView addSubview:child.view];
[child didMoveToParentViewController:self];
}
要过渡到下一个场景时，请子类化您自己的UIStoryboardSegue:
When you want to transition to the next scene, subclass your own UIStoryboardSegue:
在ReplaceSegue.h中:
In ReplaceSegue.h:
@interface ReplaceSegue : UIStoryboardSegue
@end
在ReplaceSegue.m
In ReplaceSegue.m
@implementation ReplaceSegue
- (void)perform
{
UIViewController *source = self.sourceViewController;
UIViewController *destination = self.destinationViewController;
UIViewController *container = source.parentViewController;
[container addChildViewController:destination];
destination.view.frame = source.view.frame;
[source willMoveToParentViewController:nil];
[container transitionFromViewController:source
toViewController:destination
duration:0.5
options:UIViewAnimationOptionTransitionCrossDissolve
animations:^{
}
completion:^(BOOL finished) {
[source removeFromParentViewController];
[destination didMoveToParentViewController:container];
}];
}
@end
然后，在从第一个包含的场景到下一个场景进行segue时，指定一个自定义" segue，并使用此"ReplaceSegue"作为类(只需单击segue以将其选中，然后查看"Attributes"检查员").
Then, when doing a segue from the first contained scene to the next, specify a "custom" segue, and use this "ReplaceSegue" as the class (just click on the segue to select it and then look at the "Attributes inspector").
生成的故事板可能看起来像(注意各个子级之间的"{}"标记):
The resulting storyboard might look like (note the "{}" designation between the various children):
参考文献:
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有关收容措施的一般性讨论，请参见有关实现的一些详细信息，请参见
For some details about the implementation, see Creating Custom Container View Controllers in the View Controller Programming Guide for iOS.
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