Reading File to Frameworks of Xcode

I removed a file from the Framework section o开发者_运维知识库f my Xcode application and now I want to add the file back. However when I try to add the file back I get the following alert.

Could not copy /Users/brian/Downloads/iphone-exif-0-9.1(1)/Release-simulator-iphonesimulator/libiphone-exif.a to /Developer/CS193/GraffitiMap/libiphone-exif.a.

What is going on here?

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When you add a file in you project, you can either copy it in you project or just reference the file somewhere else on your hard drive.

When you removed the file from you project, you didn't remove it from you project folder. Xcode can't write at that path since there's already a file, and gives you an error.

Just remove the file that's already in your project folder from the Finder.