xcode iOS 7 中的大小类
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Size Classes in iOS 7
提问by Kurt Anderson
I created a new app in Xcode 6 using Size Classes. After testing with iOS 7, I can't figure out how to get iPhone to display a certain size class while in landscape mode.
我使用大小类在 Xcode 6 中创建了一个新应用程序。在使用 iOS 7 进行测试后，我无法弄清楚如何让 iPhone 在横向模式下显示特定尺寸等级。
I first developed the UI with iPhone landscape as wAny hCompact, but iOS 7 doesn't recognize that. I had iPhone portrait in wAny hAny.
我首先将 iPhone 景观的 UI 开发为 wAny hCompact，但 iOS 7 不承认这一点。我在 wAny hAny 中有 iPhone 肖像。
I then changed it so now I'm using wCompact hRegular for iPhone portrait. I then modified wAny hAny to be the landscape layout. But it's not using that layout when the iOS 7 device is in landscape.
然后我改变了它，所以现在我将 wCompact hRegular 用于 iPhone 肖像。然后我将 wAny hAny 修改为横向布局。但是当 iOS 7 设备处于横向时，它不会使用该布局。
Is iOS 7 able to use different size classes based on the device being portrait or landscape? If so, which size class should I be using?
iOS 7 是否能够根据设备是纵向还是横向使用不同的尺寸类？如果是这样，我应该使用哪个尺寸等级？
Reference: Really helpful information about backwards compatibility with size classes.
ps. I'm not concerned with iPad because the device does not display a different size class based on the device rotation in iOS 8.
附：我不关心 iPad，因为该设备不会根据 iOS 8 中的设备旋转显示不同的尺寸类别。
回答by Andrei Konstantinov
Size classes works in iOS 7 for sure. But only if you follow several rules:
大小类肯定适用于 iOS 7。但前提是您遵循以下几条规则：
- The app is built using Xcode version 6or later
- The deployment target of the app is earlier than iOS 8
- Size classes are specified in a storyboard or xib file
- The value of the height component is not compact (yep, this is your case, it's not possible in iOS 7, unfortunatelly)
- 该应用程序是使用 Xcode 6或更高版本构建的
- 应用的部署目标早于iOS 8
- 大小类在故事板或 xib 文件中指定
- 高度组件的值不紧凑（是的，这是您的情况，不幸的是，在 iOS 7 中这是不可能的）
There is a little explanation here: https://stackoverflow.com/a/24976792/2190175
回答by Joseph Lord
No I'm afraid that Size Classes were introduced in iOS 8. You could write some conditional code to run on iOS to determine the screen/view size/orientation and change the the layout that way when iOS 8 becomes your minimum target the conditional code can be removed.
不，我担心尺寸类是在 iOS 8 中引入的。您可以编写一些条件代码在 iOS 上运行以确定屏幕/视图大小/方向，并在 iOS 8 成为您的最小目标条件代码时以这种方式更改布局可以删除。
