ios - 通过 Facebook Graph API 快速获取个人资料图片返回 "unsupported URL"

Question

我正在为 iOS 开发一个应用程序，用户应该使用 facebook 登录。所以我正在尝试获取用户个人资料图片，但以下代码返回 "unsupported URL"

FBRequestConnection.startWithGraphPath("\(userID)/picture?type=large&access_token=207613839327374|BgKi3AePtvg1oDO8GTbWqqLE_SM", completionHandler: { (connection, result, error) -> Void in
   if (error? != nil){
      NSLog("error = \(error)")
   }else{
      println(result)
   }
})

---

更新

以下更改:

FBRequestConnection.startWithGraphPath("\(userID)/picture?type=large", completionHandler: { (connection, result, error) -> Void in
  if (error? != nil){
    NSLog("error = \(error)")
  }else{
    println(result)
  }
})

正在返回:

error = Error Domain=com.facebook.sdk Code=6 "Response is a non-text MIME type; endpoints that return images and other binary data should be fetched using NSURLRequest and NSURLConnection" UserInfo=0x786d4790

Answer 1

你可以这样做:

    // accessToken is your Facebook id
    func returnUserProfileImage(accessToken: NSString)
    {
        var userID = accessToken as NSString
        var facebookProfileUrl = NSURL(string: "http://graph.facebook.com/\(userID)/picture?type=large")

        if let data = NSData(contentsOfURL: facebookProfileUrl!) {
            imageProfile.image = UIImage(data: data)
        }

    }

这是我获得 Facebook id 的方式:

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)")

            if let id: NSString = result.valueForKey("id") as? NSString {
                println("ID is: \(id)")
                self.returnUserProfileImage(id)
            } else {
                println("ID es null")
            }


        }
    })
}

我使用的是 Xcode 6.4 和 Swift 1.2