"Facebook SDK Swift - 使用未声明的标识符"

Question

I am getting Use of undeclared identifier for every Facebook Object I use

Following this tutorial: TUTORIAL: HOW TO SHARE IN FACEBOOK SDK 4.1.X FOR SWIFT

But I've got the following error:

I've added Facebook framework via cocoapods:

pod 'FBSDKCoreKit'
pod 'FBSDKShareKit'

And it was installed successfully

I've added bridging header

#ifndef Bridging_Header_h
#define Bridging_Header_h

#import <FBSDKCoreKit/FBSDKCoreKit.h>
#import <FBSDKShareKit/FBSDKShareKit.h>

#endif /* Bridging_Header_h */

The bridging header is connected:

I've configured my .plist

<key>CFBundleURLTypes</key>
    <array>
        <dict>
            <key>CFBundleURLSchemes</key>
            <array>
                <string>fb*****</string>
            </array>
        </dict>
    </array>
    <key>FacebookAppID</key>
    <string>*****</string>
    <key>FacebookDisplayName</key>
    <string>*****</string>
    <key>NSAppTransportSecurity</key>
    <dict>
        <key>NSExceptionDomains</key>
        <dict>
            <key>facebook.com</key>
            <dict>
                <key>NSIncludesSubdomains</key> <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/>
            </dict>
            <key>fbcdn.net</key>
            <dict>
                <key>NSIncludesSubdomains</key> <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>  <false/>
            </dict>
            <key>akamaihd.net</key>
            <dict>
                <key>NSIncludesSubdomains</key> <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/>
            </dict>
        </dict>
    </dict>

Here is the code:

let content : FBSDKShareLinkContent = FBSDKShareLinkContent()
        content.contentURL = NSURL(string: "<INSERT STRING HERE>")
        content.contentTitle = "<INSERT STRING HERE>"
        content.contentDescription = "<INSERT STRING HERE>"
        content.imageURL = NSURL(string: "<INSERT STRING HERE>")

        let button : FBSDKShareButton = FBSDKShareButton()
        button.shareContent = content
        button.frame = CGRectMake((UIScreen.mainScreen().bounds.width - 100) * 0.5, 50, 100, 25)
        self.view.addSubview(button)

Answer 1

If you use Pods and your project is on Swift you don't need to import headers from pods to Bridging_Header_h It's suficient to import needed SDK to you swift file like:

import FBSDKCoreKit
import FBSDKLoginKit
import FBSDKShareKit

Answer 2

First step is create Podfile, for example:

use_frameworks!
pod 'ChameleonFramework/Swift'
pod 'GBDeviceInfo'

Save file and install or update pods by command:

pod install / pod update

Next, you should add in general settings framework:

Answer 3

For Swift users: Facebook Swift SDK 0.7.0 and 0.8.0 seem to be completely FUBAR, there is no way to get imports to work properly even on a completely new project.

Revert to 0.6.0 by specifying the following in your Podfile , and the tutorials and imports will work again:

pod 'FacebookCore', '~> 0.6.0'
pod 'FacebookLogin', '~> 0.6.0'
pod 'FacebookShare', '~> 0.6.0' 

Answer 4

I was stuck at it too until I found that it is a debug and release issue.

instead of using

#ifndef Bridging_Header_h
#define Bridging_Header_h

#import <FBSDKCoreKit/FBSDKCoreKit.h>
#import <FBSDKShareKit/FBSDKShareKit.h>

#endif /* Bridging_Header_h */

You should use

#import <FBSDKCoreKit/FBSDKCoreKit.h>
#import <FBSDKShareKit/FBSDKShareKit.h>

#ifndef Bridging_Header_h
#define Bridging_Header_h

#endif /* Bridging_Header_h */