XCode 7（Beta 3& 4）无法下载和安装iOS 8. *模拟器 [英] XCode 7 (Beta 3 & 4) Could not download and install iOS 8.* simulator

问题描述

尝试在XCode 7中获得iOS 8模拟器。在测试版3之前，这是不可能的，但在beta 3发行说明中：

< Xcode 7.0 beta现在支持可下载的传统模拟器。
。我还安装了Xcode 6，但我正在尝试将模拟器安装到Xcode 7 beta 3，其中iOS 8不再是基本操作系统。

错误消息：

无法下载和安装iOS 8.3模拟器。需要授权才能安装软件包

解决方案

我找到了 Apple论坛上的另一个解决方法，这个问题不需要下载/拥有其他版本的Xcode。如果您使用 sudo 运行Xcode，模拟器下载并安装工作就好了：

  sudo /Applications/Xcode.app/Contents/MacOS/Xcode 
  

注意：一旦下载和安装完成后你应该退出Xcode并正常启动。

更新： XCool在我想要的评论中指出一个重要的安全提示突出显示：

确保在使用sudo打开Xcode之前关闭所有项目，否则会出现很多权限问题安装时当前打开的文件。

Trying to get iOS 8 simulators in XCode 7. Prior to beta 3, that wasn't possible but in beta 3 release notes:

"Xcode 7.0 beta now supports downloadable legacy simulators." Xcode 7 beta 3 Release Notes

They also show up in the "Downloads" section:

I'm running into the same problem as reported in this question about XCode 6. I have Xcode 6 still installed, but am trying to install the simulator to Xcode 7 beta 3 where iOS 8 is no longer the base OS.

Error msg:

Could not download and install iOS 8.3 simulator. Authorization is required to install the package

解决方案

I found another workaround on the Apple forums for this issue that does not require downloading/having other versions of Xcode. If you run Xcode using sudo the simulator downloads and installs work just fine:

sudo /Applications/Xcode.app/Contents/MacOS/Xcode

Note: Once the downloads and installs are complete you should quit Xcode and start it normally.

Update: XCool points out an important safety tip in the comments that I wanted to highlight here:

Make sure that you close any projects before opening Xcode using sudo, otherwise there'll be a lot of permission issues with any files that are currently open when the installation occurs.

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