Ios 使用Swift作为Facebook页面发布

我想将我的应用程序发布到我的Facebook商业页面。我可以将其发布到我的个人Facebook订阅源，也可以将其发布到我的商业页面，作为我的个人用户帐户发布。但是，我想把它发布到主业务页面feed，作为业务帐户

如Facebook文档所示：

这是我试过的。以下代码使用我的个人用户帐户发布到页面

我试图用pageAccessToken替换POST GraphRequest中的accessToken参数。。。但无法让它工作

var pageAccessToken : GraphResponse?

func getPageAccessToken() {

    let connection = GraphRequestConnection()

    connection.add(GraphRequest(graphPath: "/\(pageID)?fields=access_token")) { httpResponse, result in
        switch result {
        case .success(let response):
            print("Graph Request Success: \(response)")
            self.pageAccessToken = response
        case .failed(let error):
            print("Graph Request Fail: \(error)")
        }
    }
    connection.start()
}


func requestPublishPermissions() {

    let loginManager = LoginManager()

    loginManager.logIn(publishPermissions: [ .managePages, .publishPages], viewController: self) { loginResult in
        switch loginResult {
        case .failed(let error):
            print(error)
        case .cancelled:
            print("User cancelled login.")
        case .success(let grantedPermissions, let declinedPermissions, let accessToken):
            print("grantedPermissions = \(grantedPermissions) \n" +
                "declinedPermissions = \(declinedPermissions) \n" +
                "accessToken = \(accessToken)")
        }
    }
}

func postMessage() {

    let requestPage : GraphRequest = GraphRequest(graphPath: "\(pageID)/feed", parameters: ["message" : "Hello Page!"], accessToken: AccessToken.current, httpMethod: .POST, apiVersion: .defaultVersion)

    requestPage.start({ (connection, result) -> Void in
        print("RESULT = \(result)")
    })
}

---

谢谢你给我的建议和建议

我终于自己把它修好了。我将为那些试图做同样事情的人分享答案。 要在Facebook上的页面上发布简单的文字信息：

let pageID = {Get Your Page ID On Facebook}
var pageAccessToken : AccessToken?

func requestPublishPermissions() {
    let loginManager = LoginManager()
    loginManager.logIn(publishPermissions: [ .managePages, .publishPages], viewController: self) { loginResult in
        switch loginResult {
        case .failed(let error):
            print(error)
        case .cancelled:
            print("User cancelled login.")
        case .success(let grantedPermissions, let declinedPermissions, let accessToken):
            print("grantedPermissions = \(grantedPermissions) \n" +
                "declinedPermissions = \(declinedPermissions) \n" +
                "accessToken = \(accessToken)")
        }
    }
}

func getPageAccessToken() {

    let connection = GraphRequestConnection()
    connection.add(GraphRequest(graphPath: "/\(pageID)?fields=access_token")) { httpResponse, result in
        switch result {
        case .success(let response):
            print("Graph Request Success: \(response)")
            self.pageAccessToken = AccessToken.init(authenticationToken: response.dictionaryValue?["access_token"] as! String)
        case .failed(let error):
            print("Graph Request Fail: \(error)")
        }
    }
    connection.start()
}

func postMessage() {
    let requestPage : GraphRequest = GraphRequest(graphPath: "\(pageID)/feed", parameters: ["message" : "Hello Page!"], accessToken: self.pageAccessToken, httpMethod: .POST, apiVersion: .defaultVersion)

    requestPage.start({ (connection, result) -> Void in
        print("RESULT = \(result)")
    })
}

---

swift 5更新

let pageID = "yourFBPage"
var pageAccessToken : String?



func getPageAccessToken() {

    let connection = GraphRequestConnection()
    connection.add(GraphRequest(graphPath: "\(pageID)", parameters: ["fields": "access_token"])) { httpResponse, result,error  in
        if let error = error {
            print(error.localizedDescription)
          } else {
            let info = result as! [String : AnyObject]
             if info["access_token"] as? String != nil {
                self.pageAccessToken = info["access_token"] as? String
             }
            //print(result)
            self.postMessage()
          }
    }
    connection.start()
}

func postMessage() {
    let requestPage : GraphRequest = GraphRequest(graphPath: "\(pageID)/feed", parameters: ["message" : "Hello Page!"], tokenString: self.pageAccessToken, version: nil , httpMethod: .post )
        

    requestPage.start(completionHandler: { (connection, result, error) -> Void in
        if let error = error {
            print(error.localizedDescription)
          } else {
            //print("RESULT = \(result)")
          }
    })
}