It says "FacebookSDK/FacebookSDK.h file not found"
Yet I can jump-to-definition on the #import and it takes me to the file.
And once I added the #import it now knows what FBFriendPickerDelegate is and it now doesn't have an error on that line.
I have the facebookSDK.framework in my project and in the right folder. It's SDK 3.1. I tried adding search paths to /FacebookSDK and /FacebookSDK.framework and /FacebookSDK/Versions/A/Headers etc. I also tried #import "FacebookSDK.framework/Versions/A/Headers/FacebookSDK.h" and it still says it can't find it. I also tried clean and restarting. I have the latest version of Xcode.
//
// FacebookView.h
//
#import <UIKit/UIKit.h>
#import <FacebookSDK/FacebookSDK.h>
@interface FacebookView : UIViewController <FBFriendPickerDelegate>
{
}