iPhone上的UISplitViewController纵向始终显示iOS 8中的主图和细节 [英] UISplitViewController in portrait on iPhone always show master and detail in iOS 8

问题描述

UISplitViewController 始终在 iOS 8

我尝试继承 UISplitViewController 并将其配置为同时显示主数据和详细信息。但没有任何影响。

I try to subclass UISplitViewController and config it to show master and detail at the same time. but no any effect.

class APPSplitViewController: UISplitViewController, UISplitViewControllerDelegate {

    override func viewDidLoad() {

        super.viewDidLoad()
        preferredDisplayMode = UISplitViewControllerDisplayMode.AllVisible
        maximumPrimaryColumnWidth = 32.0
        minimumPrimaryColumnWidth = 32.0
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

如何？

推荐答案

UISplitViewController仅在水平常规环境中使用show并排显示（新的TraitCollection大小）

UISplitViewController use show side-by-side only in horizontally regular environment (new TraitCollection size)

拆分视图控制器根据可用空间确定其子视图控制器的排列。在水平常规环境中，分割视图控制器尽可能并排显示其视图控制器。在水平紧凑的环境中，分割视图控制器更像是导航控制器，最初显示主视图控制器并根据需要推送或弹出辅助视图控制器。您还可以通过为 preferredDisplayMode property。

The split view controller determines the arrangement of its child view controllers based on the available space. In a horizontally regular environment, the split view controller presents its view controllers side-by-side whenever possible. In a horizontally compact environment, the split view controller acts more like a navigation controller, displaying the primary view controller initially and pushing or popping the secondary view controller as needed. You can also ask the split view controller to prefer a specific arrangement by assigning a value to the preferredDisplayMode property.

解决方案。
您必须更改SplitViewController的TraitCollection。怎么做：

Solution. You have to change TraitCollection of SplitViewController. How do this:

• 创建一个ViewController并将你的SplitViewController作为一个孩子添加。


• 覆盖traitCollection您的孩子的规则（UISplitViewController）

ViewController Wrapper

class TraitOverrideViewController: UIViewController {

 override func viewDidLoad() {
    super.viewDidLoad()
    configureSplitVC()
  }


  private func configureSplitVC() {

    let splitVC = self.childViewControllers[0] as UISplitViewController
    setOverrideTraitCollection(UITraitCollection(horizontalSizeClass: .Regular), forChildViewController: splitVC)
  }
}

在iOS 8中，UISplitViewController使用自适应用户界面和TraitCollections来显示其内容。

它显示不同的风格取决于视图的大小和类型。您可以通过我在上面解释的技术进行更改。

您可以在WWDC视频中获得有关使用UIKit构建自适应应用程序

In iOS 8 UISplitViewController uses Adaptive User Interfaces and TraitCollections to show its content.
It shows different style depending on the size of and type of the view. You can change by technic I explain above.
You can get more info in WWDC video about Building Adaptive Apps with UIKit

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