ios - 如何从Facebook获取个人资料图片

Question

我正在尝试获取用户的个人资料图片。但由于 Facebook 已将其 API sdk 更新到 v4.0 或更高版本，并且在 FB 开发者网站上，他们正在用 Objective C 进行解释，但我想要 Swift 中的代码。我不知道如何在我的代码中使用 FBSDKProfilePicture。我需要帮助来获取用户的个人资料照片。

我想将图片存储在我的第二个 View 中。请任何人帮助我编码。这是我的代码。

class ViewController: UIViewController, FBSDKLoginButtonDelegate {

let loginManager = FBSDKLoginManager()
let loginView : FBSDKLoginButton = FBSDKLoginButton()

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

    if (FBSDKAccessToken.currentAccessToken() != nil)
    {
        println("user already logged in")
        loginManager.logOut()
        // User is already logged in, do work such as go to next view controller.
    }

    self.view.addSubview(loginView)
    loginView.center = self.view.center
    loginView.readPermissions = ["public_profile", "email", "user_friends"]
    loginView.delegate = self
    FBSDKProfile.enableUpdatesOnAccessTokenChange(true)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "onProfileUpdated:", name:FBSDKProfileDidChangeNotification, object: nil)

}

func returnUserData()
{
    let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: nil)
    graphRequest.startWithCompletionHandler({ (connection, result, error) -> Void in

        if ((error) != nil)
        {
            // Process error
            println("Error: \(error)")
        }
        else
        {
            println("fetched user: \(result)")
            let userName : NSString = result.valueForKey("name") as! NSString
            println("User Name is: \(userName)")
            let userEmail : NSString = result.valueForKey("email") as! NSString
            println("User Email is: \(userEmail)")
    }
    })
}

Answer 1

如果您能够使用 Facebook 登录，那么您应该拥有该用户的 FB ID。有了它，您可以使用它来获取个人资料图片:

func getProfPic(fid: String) -> UIImage? {
    if (fid != "") {
        var imgURLString = "http://graph.facebook.com/" + fid! + "/picture?type=large" //type=normal
        var imgURL = NSURL(string: imgURLString)
        var imageData = NSData(contentsOfURL: imgURL!)
        var image = UIImage(data: imageData!)
        return image
    }
    return nil
}

您还可以在 URL 中将 type 参数更改为不同的大小。