在视图之间传递Facebook用户信息。 iOS Swift Xcode 6

问题描述

我在iOS应用程序开发中是新的，我很难在视图之间传递Facebook用户信息。我的应用程序有2个视图。我可以使用，因为你可能知道他们仍然不会表示支持迅速。

这是我的视图控制器：

  // ViewController.swift 
 
 
 import UIKit 
 
 class ViewController：UIViewController，FBLoginViewDelegate {
 
 @IBOutlet var fbLoginView：FBLoginView！ 
 
覆盖func viewDidLoad（）{
 super.viewDidLoad（）
 //加载视图后，通常从笔尖进行任何其他设置。 
 self.fbLoginView.delegate = self 
 self.fbLoginView.readPermissions = [public_profile，email，user_friends] 
} 
 
 // FACEBOOK DELEGATE METHODS 
 func loginViewShowingLoggedInUser（loginView：FBLoginView！）{
 println（User Logged In）
 println（这是执行segue的地方）
 self。 performSegueWithIdentifier（gotoMenu，sender：self）
 
} 
 
 func loginViewFetchedUserInfo（loginView：FBLoginView !, user：FBGraphUser）{
 println（user.name） 
} 
 
 func loginViewShowingLoggedOutUser（loginView：FBLoginView！）{
 println（User Log Out Out）
} 
 
 func loginView loginView：FBLoginView !, handleError：NSError）{
 println（Error：\（handleError.localizedDescription））
} 
 
覆盖func didReceiveMemoryWarning（）{
 super.didReceiveMemoryWarning（）
 //处理可以重新创建的任何资源。 
} 
 
 
} 
  

这是第二个视图控制器：

  // SecondViewController.swift 
 
 import UIKit 
 
 class SecondViewController：UIViewController {
 
 @IBOutlet weak var greeting：UILabel！ 
 
 
覆盖func viewDidLoad（）{
 super.viewDidLoad（）
 //加载视图后，通常从笔尖进行任何其他设置。 
 
} 
 
覆盖func didReceiveMemoryWarning（）{
 super.didReceiveMemoryWarning（）
 //处理可以重新创建的任何资源。 
} 
 
 
} 
  

我需要在第二个视图中显示用户名，如果可能，显示他的个人资料图片。如何做到这一点？

非常感谢你
问候语
nick

解决方案

在您的LoginViewController中，只需覆盖prepareForSegue：像这样...

  //在导航时你经常想做一点准备
  - （void）prepareForSegue：（UIStoryboardSegue *）segue sender：（id）sender 
 {
 if（[segue .identifier isEqualToString：@gotoMenu]）{
 SecondViewController * vc = segue.destinationViewController; 
 vc.username = self.username; //这是你传递数据的地方！ 
} 
} 
  

我知道这是客观C，但所有方法名称在Swift中完全相同。

I am new in iOS app development and I'm having a hard time trying to pass facebook user information between views. My app has 2 views. I was able to implement facebook login using this tutorial because as you might know they still dont give oficial support to swift.

This is my view controller:

//  ViewController.swift


import UIKit

class ViewController: UIViewController, FBLoginViewDelegate{

    @IBOutlet var fbLoginView : FBLoginView!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        self.fbLoginView.delegate = self
        self.fbLoginView.readPermissions = ["public_profile", "email", "user_friends"]
    }

    // FACEBOOK DELEGATE METHODS
    func loginViewShowingLoggedInUser(loginView : FBLoginView!) {
        println("User Logged In")
        println("This is where you perform a segue.")
        self.performSegueWithIdentifier("gotoMenu", sender: self)

    }

    func loginViewFetchedUserInfo(loginView : FBLoginView!, user: FBGraphUser){
        println(user.name)
    }

    func loginViewShowingLoggedOutUser(loginView : FBLoginView!) {
        println("User Logged Out")
    }

    func loginView(loginView : FBLoginView!, handleError:NSError) {
        println("Error: \(handleError.localizedDescription)")
    }

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


}

This is the second view controller:

//  SecondViewController.swift

import UIKit

class SecondViewController: UIViewController {

    @IBOutlet weak var greeting: UILabel!


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

    }

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


}

I need to show the user name in the second view and if possible his profile picture. How can I do this?

Thanks you very muchGreetingnick

解决方案

In your LoginViewController simply override prepareForSegue: like so...

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"gotoMenu"]) {
         SecondViewController *vc = segue.destinationViewController;
         vc.username = self.username; // This is where you pass the data!!
    }
}

I know this is on objective-C but all the method names are exactly the same in Swift.

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