Question

我花了很多年时间试图弄清楚为什么5％的用户下载我的应用无法成功登录Facebook。

95％的时间表现如预期所有这一切都适合全世界。

但是对于其他5％的应用程序在第一个ViewController页面上崩溃了。然后，当他们重新启动应用程序时，会成功发送到第二页以检查它们是否已存在于数据库中，但Facebook ID为零并显示错误对话框。

我无法调试它，因为我的设备和绝大多数设备似乎没有此错误。

如果有人能够提出问题所在，我将永远感激不尽！

第一页面视图控制器：

import UIKit

class ViewController: UIViewController {




@IBAction func btnFBLoginPressed(sender: AnyObject) {



    let fbLoginManager : FBSDKLoginManager = FBSDKLoginManager()



    fbLoginManager .logInWithReadPermissions(["email"], fromViewController: self, handler: { (result, error) -> Void in
        if (error == nil){

            let fbloginresult : FBSDKLoginManagerLoginResult = result
            if result.isCancelled {
                return
            }

            if(fbloginresult.grantedPermissions.contains("email"))
            {
                self.getFBUserData()

              //fbLoginManager.logOut()
            }
        }
    })
}

func getFBUserData(){
    if((FBSDKAccessToken.currentAccessToken()) != nil){
        FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id, name, first_name, last_name, picture.type(large), email, gender, age_range, locale"]).startWithCompletionHandler({ (connection, result, error) -> Void in
            if (error == nil){


                let userName : NSString = result.valueForKey("name") as! NSString
                let facebookID : NSString = result.valueForKey("id") as! NSString
                let firstName : NSString = result.valueForKey("first_name") as! NSString
                let lastName : NSString = result.valueForKey("last_name") as! NSString
                let email : NSString = result.valueForKey("email") as! NSString
                let gender : NSString = result.valueForKey("gender") as! NSString


                let locale : NSString = result.valueForKey("locale") as! NSString


                let defaults = NSUserDefaults.standardUserDefaults()

                defaults.setObject("\(userName)", forKey: "userName")
                defaults.setObject("\(facebookID)", forKey: "facebookID")
                defaults.setObject("\(firstName)", forKey: "firstName")
                defaults.setObject("\(lastName)", forKey: "lastName")
                defaults.setObject("\(email)", forKey: "email")


                defaults.setObject("\(gender)", forKey: "gender")



                defaults.setObject("\(locale)", forKey: "locale")








            }
        })
    }
}


override func viewDidAppear(animated: Bool) {




      if((FBSDKAccessToken.currentAccessToken()) != nil){

        print("logged in")

    self.performSegueWithIdentifier("login",sender:self)



      }else{

        print("Not logged in")

    }

}


override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.


    // let fbLoginManager : FBSDKLoginManager = FBSDKLoginManager()

    //  fbLoginManager.logOut()


}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

登录后的第二页：

import Foundation

import UIKit
import Parse
import Bolts

class loginViewController: UIViewController {


override func viewDidAppear(animated: Bool)
{



    let defaults = NSUserDefaults.standardUserDefaults()

    if let facebookID = defaults.stringForKey("facebookID"){

        let firstName = defaults.stringForKey("firstName")
        let lastName = defaults.stringForKey("lastName")
        let email = defaults.stringForKey("email")
        let gender = defaults.stringForKey("gender")


       // Lots of code that queries database 



    } else{


        let alert = UIAlertView()
        alert.title = "Error"
        alert.message = "Error Code: 01"
        alert.addButtonWithTitle("OK")
        alert.show()


            let fbLoginManager : FBSDKLoginManager = FBSDKLoginManager()

            fbLoginManager.logOut()

            self.performSegueWithIdentifier("backToLoginScreen", sender: nil)




    }


        }




}

Answer 1

我认为问题是

 fbLoginManager .logInWithReadPermissions(["email"], fromViewController: self, handler: { (result, error) -> Void in

因为您只是要求收到电子邮件，但是您将获得身份证，姓名以及许多与电子邮件无关的内容。因此，我会更好地更改此类权限。

fbLoginManager.logInWithReadPermissions(["public_profile","email"], fromViewController: self) { (result, error) -> Void in

希望这会帮助你！

Swift FBSDK问题 - 某些用户的Facebook ID为零

1 个答案: