如何使用GraphAPI快速從Facebook頁面獲取帖子

Question

我的應用程序具有以下功能：從Facebook頁面獲取帖子並將其顯示在應用程序中。 我搜索了一下，發現我應該使用Facebook GraphAPI： https : //developers.facebook.com/docs/graph-api/using-graph-api/v2.3#reading我遵循了之前的鏈接，但出現錯誤： “要求訪問令牌才能請求此資源。” 我有該頁面的訪問令牌，但我真的不知道如何在我的請求中分配它。 有什么幫助嗎？ 非常感謝！

Answer 1

1.使用Facebook SDK。

登錄臉書按鈕

@IBAction func click_Facebook(sender: AnyObject)
    {
        let loginView : FBSDKLoginManager = FBSDKLoginManager()

        loginView.loginBehavior = FBSDKLoginBehavior.Browser

        loginView.logInWithReadPermissions(["public_profile","user_friends","user_photos","user_location","user_education_history","user_birthday","user_posts"], handler: { (result : FBSDKLoginManagerLoginResult!, error : NSError!) -> Void in

                if ((error) != nil)
                {
                    // Process error

                    self.alertWithMessaage(error.localizedDescription)
                }
                else if result.isCancelled {
                    // Handle cancellations
                }
                else {

                    self.returnUserData()
                }

        })

    }

登錄后，調用以下功能。

    var Requset : FBSDKGraphRequest

    println("\(FBSDKAccessToken.currentAccessToken())")

    var acessToken = String(format:"%@", FBSDKAccessToken.currentAccessToken().tokenString) as String

    println("\(acessToken)")

    var parameters1 = ["access_token":FBSDKAccessToken.currentAccessToken().tokenString]


    Requset  = FBSDKGraphRequest(graphPath:"me/posts", parameters:parameters1, HTTPMethod:"GET")

    Requset.startWithCompletionHandler({ (connection, result, error) -> Void in

        MBProgressHUD.hideHUDForView(appDelegate.window, animated: true)

        if ((error) != nil)
        {
            println("Error: \(error)")
        }
        else
        {
            println("fetched user: \(result)")

            var dataDict: AnyObject = result!.objectForKey("data")!

        }
    })
}

2.使用默認Facebook應用程序。

//獲得訪問令牌

    var _accountStore: ACAccountStore = ACAccountStore()

    var accountType : ACAccountType = _accountStore.accountTypeWithAccountTypeIdentifier(ACAccountTypeIdentifierFacebook)!

    var accounts : NSArray = _accountStore.accountsWithAccountType(accountType)!

    var facebookAccount1: ACAccount = accounts.lastObject! as ACAccount

    println("== \(facebookAccount1.credential.oauthToken)")

//將AccessToken傳遞給參數

    var acessToken = String(format:"%@", facebookAccount1.credential.oauthToken) as String

    var parameters = ["access_token":acessToken] as NSDictionary

// SLRequset

    var imageURL : NSURL = NSURL(string: "Your graph URL")!

    println("=== TOKEN : \(LoginService().currentAccount?.credential.oauthToken)")

    var Requset = SLRequest(forServiceType: SLServiceTypeFacebook, requestMethod: SLRequestMethod.GET, URL: imageURL, parameters: parameters)

    Requset.account = account

    Requset.performRequestWithHandler { (responseData : NSData!, urlResponse : NSHTTPURLResponse!, error : NSError!) -> Void in


        if (error != nil)
        {
            self.alertWithMessaage(error.localizedDescription)
        }
        else{

            var datastring = NSString(data: responseData, encoding: NSUTF8StringEncoding)

            println("== \(datastring)")

            var error:NSError? = nil

            var UserDict = NSJSONSerialization.JSONObjectWithData(responseData, options:nil, error: &error) as? NSDictionary


        }

    }

Answer 2

Swift 4.2更新代碼

在viewDidLoad（）中創建用於登錄和注銷的faceBook按鈕。

 let loginButton = FBLoginButton(permissions: [ .publicProfile, .email, .userPosts, .userPhotos])
    loginButton.center = view.center
    view.addSubview(loginButton)

現在創建函數以獲取FaceBook帖子

 func getPosts() {

    let accessToken = AccessToken.current?.tokenString
    let params = ["access_token" : accessToken ?? ""]

    let request = GraphRequest(graphPath: "/me/posts/", parameters: params, httpMethod: .get)

    request.start(completionHandler: { (test, result, error) in
        if(error == nil)
        {
           print(result!)
        }
    })

}

結果，您將獲得您Facebook帖子的數據！