使用Facebook iOS SDK检索生日

import FacebookCore

FBSDKAppDelegate.sharedInstance().authorizeRequests[FBSDKAccessTokenRequest]
    .addPermissions([FBSDKGraphRequestPermission.publicProfile])
    .start()

let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "/me?fields=birthday", parameters: nil)
do {
    let birthday = try FBSDKGraphRequestConnection.execute(graphRequest) as? NSDictionary
    if let birthday = birthday {
        // 生日已检索到，可以进行后续操作
    }
} catch {
    print("Error: \(error)")
}

import UIKit
import FacebookCore

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // 1. 导入Facebook SDK
        import FacebookCore

        // 2. 设置授权
        FBSDKAppDelegate.sharedInstance().authorizeRequests[FBSDKAccessTokenRequest]
            .addPermissions([FBSDKGraphRequestPermission.publicProfile])
            .start()

        // 3. 检索生日
        let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "/me?fields=birthday", parameters: nil)
        do {
            let birthday = try FBSDKGraphRequestConnection.execute(graphRequest) as? NSDictionary
            if let birthday = birthday {
                // 生日已检索到，可以进行后续操作
                print("User's birthday is: \(birthday)")
            }
        } catch {
            print("Error: \(error)")
        }
    }

}