使用iOS7开发需要你升级到Xcode 5，您可以在Mac App Store中免费找到。

Developing with iOS7 requires that you upgrade to Xcode 5, which you can find free in the Mac App Store.

您仍然可以使用Xcode 5将部署目标保持在7.0以下。

You'll still be able to keep your deployment target below 7.0 with Xcode 5.

如果您没有配备iOS 6.x的开发iPhone，您可以进入Xcode>首选项>下载以安装iOS6模拟器，命令行工具和任何其他文档。

If you don't have a dev iPhone with iOS 6.x you can go into Xcode > Preferences > Downloads to install the iOS6 simulator, command line tools, and any additional documentation.

更新1

如果您将手机更新到iOS 7.1，那么你还需要将您的Xcode版本更新为5.1

If you update your phone to iOS 7.1, you will also be required to update your version of Xcode to 5.1