解决错误：Unable to copy symbols from this device

在iphone真机调试中出现了“Unable to copy symbols from this device”错误。

xcode版本：6.1

iphone型号：4s

ios系统：8.1

重新安装了xcode，已经更新了手机ios后出现该问题。

问题详细文字提示：

Unable to copy symbols from this device

This device has a version of iOS different from that of this installation of Xcode.

In order to copy the information needed to work with this device. Xcode must be

run by a user with read/write access to:

"/Users/admin/LibraryDeveloper/Xcode/iOS/DeviceSupport/8.1(12B411)/Symbols/usr/lib/dyld"

解决方法：

打开mac系统的终端，更改对应文件夹的权限，设置为任何人都可以读写该文件夹

输入：chmod 777 /Users/admin/Library/Developer/Xcode