我無法使用xcode 4在新的（git）分支上構建項目。爲什麼？

Question

我創建了我的項目的一個新分支，現在當我嘗試構建並運行它時，出現此錯誤：

'所選運行目標對此操作無效'。爲什麼是這樣？我不知道爲什麼，但我只是插入我的iPhone，現在該項目將建立。奇怪的。

Answer 1

它可以是由於：

• 丟失設置，如圖所示由該blog post：

The problem was fixed regardless of the value I selected in the above list (it worked with 3.0, 4.0, 4.2 or any other value).
When I changed the value in that list though, the IPHONEOS_DEPLOYMENT_TARGET setting was added to a section in project.pbxproj and I was able to run the app on the device.

• 不正確SDK setting。見this comment：

this is an Xcode 4 bug where it changes the platform to Mac OS X after template creation.
Close down the project, and launch it again, to fix it.