I'm new to iOS Development, I installed Alamofire as said in README, but I have this error as other users and I don't know how to solve it.

I'm new to iOS Development, I installed Alamofire as said in README, but I have this error as other users and I don't know how to solve it.

2019 UPDATE
If you have this error and you use 'alamofire5' branch just change Alamofire.request to AF.request.
if you are using new Alamofire 5.xxx then you will use AF instead of Almofire it like that
AF.upload(multipartFormData: <#T##(MultipartFormData) -> Void#>, to: <#T##URLConvertible#>)
AF.request(<#T##url: URLConvertible##URLConvertible#>)
AF.download(<#T##url: URLConvertible##URLConvertible#>)
I solved this issue by changing the Build Active Architectures Only settings.
Click on your project in the Project Explorer, select Build Settings, locate Architectures section, and change the Build Active Architecture Only setting to Yes for Debug and No for Release.
Hope this will work for you.
Alamofire.xcodeproj -> Build Phases -> Complie Sources
If (0 item), then "[+] Alamofire.swift".
It's OK :)
I found this answer and it worked for me:
I had the same problem after installing from cocoapods.
Choosing Product | Clean then Product | Build fixed it.
I selected my project name then the project then.
- Clean Cmd+shit+K
- Build Cmd+B
Strangely enough this worked for me. Good Luck!
Without having the actual project, it is very difficult to tell what the problem is. However, you do have a problem with the code that you have written. This won't compile with the data/string/JSON variable being declared. That "may" be the actual problem. Please try the following and see if that helps.
Alamofire.request(.GET, "http://httpbin.org/get", parameters: ["foo": "bar"])
.response { request, response, data, error in
println(request)
println(response)
println(data)
println(error)
}