1. Create New Storyboard file with MainStoryboard_iPad.storyboard
2. Copy All the views from MainStoryboard and paste to MainStoryboard_iPad.storyboard

只是为了好玩，在XCode 5.1和iOS 7.1上，我还需要改变“toolVersion”和“systemVersion”的值:

toolsVersion="5023" systemVersion="13A603"

如果没有这个，新的故事板文件将无法编译

我找到了一种解决方案:

Duplicate your iPhone-Storyboard and rename it MainStoryboard_iPad.storyboard Close Xcode and then open this file any text editor. Search for targetRuntime="iOS.CocoaTouch"and change it to targetRuntime="iOS.CocoaTouch.iPad" Change the code in the MainStoryboard_iPad.storyboard from: <simulatedScreenMetrics key="destination" type="retina4"/> to <simulatedScreenMetrics key="destination"/> Now save everything and reopen Xcode. The iPad-Storyboard has the same contents as the iPhone-file but everyting could be disarranged.

这节省了我很多时间，希望这对你们有帮助

当我昨天遇到同样的问题时，我关注了这个帖子。我遵循的步骤

For Xcode 5.1, I had to do some cleanup of iPhone storyboard like missing reuseIdentifiers of Table cells, provide story board id for every controller, remove unused scenes. Copy MainStoryboard_iPhone.storyboard to MainStoryboard_iPad.storyboard. Using vi editor - changed targetRuntime="iOS.CocoaTouch" to targetRuntime="iOS.CocoaTouch.iPad" Change the code in the MainStoryboard_iPad.storyboard from: <simulatedScreenMetrics key="destination" type="retina4"/> to <simulatedScreenMetrics key="destination"/> Open the project in Xcode. Changed the Deployment devices to Universal - Chose the option of NOT copying the iPhone Storyboard. Xcode will default the Deployment Target to 7.1, took care of the deprecated functions. To fix the misplaced view error in iPad Storyboard - Changed the Frame Layout for Controllers giving errors.

就是这样。谢谢你的帮助。

这是另一种方式，但我能够做一个全选&复制在我的iPad故事板(~35个场景)，并粘贴到我的iPhone故事板。场景大小自动调整。我只看到了两个问题，我必须替换UISplitViewController(因为它只是iPad)，默认背景变成透明而不是灰色(仍在正确地修复这个问题，无需手动设置所有背景)。

编辑:在属性检查器中UITableView的默认背景似乎很奇怪。对于分组的表视图，我必须手动设置背景为“组表视图背景色”，对于非分组的表视图，我必须手动设置背景为“白色”。然后它被显示为“Default”(我假设它匹配了一个硬编码的值)。实际上，更简单的是，从“分组”切换到“静态”，然后再切换回来似乎会重置默认颜色。

There is a really simple solution for Xcode versions that support size classes (Tested in Xcode 7 which is the current version at the time of writing). Check the "use size classes" checkbox on a storyboard file (File Inspector), confirm that dialog that appears. Then uncheck that same checkbox - Xcode will ask you if you want to use this storyboard with an iPhone or iPad, and convert the screens in it appropriately. No need to directly edit the storyboard file. For both iPad and iPhone, just copy the same storyboard and configure one for iPad and one for iPhone using the described method.

在有人建议使用大小类之前——虽然很好，但对于重度定制的UI，比如游戏等，它们不太方便