TL; TR：如何使用facebook SDK 4.4获取使用我的应用登录的用户的电子邮件和姓名
到目前为止，我已设法登录工作，现在我可以从应用程序的任何位置获取当前访问令牌。
如何配置登录视图控制器和facebook登录按钮：
class LoginViewController: UIViewController, FBSDKLoginButtonDelegate {
@IBOutlet weak var loginButton: FBSDKLoginButton!
override func viewDidLoad() {
super.viewDidLoad()
if(FBSDKAccessToken.currentAccessToken() == nil)
{
print("not logged in")
}
else{
print("logged in already")
}
loginButton.readPermissions = ["public_profile","email"]
loginButton.delegate = self
}
//MARK -FB login
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
//logged in
if(error == nil)
{
print("login complete")
print(result.grantedPermissions)
}
else{
print(error.localizedDescription)
}
}
func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) {
//logout
print("logout")
}
现在在我的主视图中，我可以像这样获取访问令牌：
let accessToken = FBSDKAccessToken.currentAccessToken()
if(accessToken != nil) //should be != nil
{
print(accessToken.tokenString)
}
如何从登录的用户那里获取姓名和电子邮件，我使用较旧的SDK或使用Objective-C查看了许多问题和答案。
答案 0 :(得分：57)
我已经在android中使用了fields，所以我想在IOS中尝试它，并且它可以工作。
let req = FBSDKGraphRequest(graphPath: "me", parameters: ["fields":"email,name"], tokenString: accessToken.tokenString, version: nil, HTTPMethod: "GET")
req.startWithCompletionHandler({ (connection, result, error : NSError!) -> Void in
if(error == nil)
{
print("result \(result)")
}
else
{
print("error \(error)")
}
})
结果将打印：
result{
email = "email@example.com";
id = 123456789;
name = "Your Name";
}
发现这些字段与User端点相同，请参阅this link，您可以在其中查看可以获得的所有字段。
答案 1 :(得分：27)
let request = GraphRequest.init(graphPath: "me", parameters: ["fields":"first_name,last_name,email, picture.type(large)"], accessToken: AccessToken.current, httpMethod: .GET, apiVersion: FacebookCore.GraphAPIVersion.defaultVersion)
request.start({ (response, requestResult) in
switch requestResult{
case .success(let response):
print(response.dictionaryValue)
case .failed(let error):
print(error.localizedDescription)
}
})
答案 2 :(得分：18)
对于Swift 3＆amp; Facebook SDK 4.16.0：
func getFBUserInfo() {
let request = GraphRequest(graphPath: "me", parameters: ["fields":"email,name"], accessToken: AccessToken.current, httpMethod: .GET, apiVersion: FacebookCore.GraphAPIVersion.defaultVersion)
request.start { (response, result) in
switch result {
case .success(let value):
print(value.dictionaryValue)
case .failed(let error):
print(error)
}
}
}
并将打印：
Optional(["id": 1xxxxxxxxxxxxx, "name": Me, "email": stackoverflow@gmail.com])
答案 3 :(得分：5)
雨燕5
将通过使用{{来检索用户电子邮件，名字，姓氏及其 id 1}}类：
GraphRequest答案 4 :(得分：4)
facebook ios sdk获取用户名和电子邮件swift 3
FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id, name, first_name, last_name, email"]).start(completionHandler: { (connection, result, error) -> Void in
if (error == nil) {
let fbDetails = result as! NSDictionary
print(fbDetails)
} else {
print(error?.localizedDescription ?? "Not found")
}
})
答案 5 :(得分：4)
通过Facebook登录后，请调用以下功能。
func getUserDetails(){
if(FBSDKAccessToken.current() != nil){
FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id,name , first_name, last_name , email"]).start(completionHandler: { (connection, result, error) in
guard let Info = result as? [String: Any] else { return }
if let userName = Info["name"] as? String
{
print(userName)
}
})
}
}
答案 6 :(得分：3)
您 可以使用此代码获取用户的电子邮件，姓名和个人资料图片
@IBAction func fbsignup(_ sender: Any) {
let fbloginManger: FBSDKLoginManager = FBSDKLoginManager()
fbloginManger.logIn(withReadPermissions: ["email"], from:self) {(result, error) -> Void in
if(error == nil){
let fbLoginResult: FBSDKLoginManagerLoginResult = result!
if( result?.isCancelled)!{
return }
if(fbLoginResult .grantedPermissions.contains("email")){
self.getFbId()
}
} }
}
func getFbId(){
if(FBSDKAccessToken.current() != nil){
FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id,name , first_name, last_name , email,picture.type(large)"]).start(completionHandler: { (connection, result, error) in
guard let Info = result as? [String: Any] else { return }
if let imageURL = ((Info["picture"] as? [String: Any])?["data"] as? [String: Any])?["url"] as? String {
//Download image from imageURL
}
if(error == nil){
print("result")
}
})
}
}
答案 7 :(得分：2)
框架似乎已更新，对我有用的方式是：
if (yourView.isHidden) {
NSLog(@"view is hidden");
}
else{
NSLog(@"view is not hidden");
}
答案 8 :(得分：1)
在Swift中，您可以从登录按钮的didCompleteWithResult回调中发出一个Graph请求（如@RageCompex所示）。
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!)
{
print(result.token.tokenString) //YOUR FB TOKEN
let req = FBSDKGraphRequest(graphPath: "me", parameters: ["fields":"email,name"], tokenString: result.token.tokenString, version: nil, HTTPMethod: "GET")
req.startWithCompletionHandler({ (connection, result, error : NSError!) -> Void in
if(error == nil)
{
print("result \(result)")
}
else
{
print("error \(error)")
}
})
}
答案 9 :(得分：0)
在Swift 4.2和Xcode 10.1中
@IBAction func onClickFBSign(_ sender: UIButton) {
if let accessToken = AccessToken.current {
// User is logged in, use 'accessToken' here.
print(accessToken.userId!)
print(accessToken.appId)
print(accessToken.grantedPermissions!)
print(accessToken.expirationDate)
let request = GraphRequest(graphPath: "me", parameters: ["fields":"id,email,name,first_name,last_name,picture.type(large)"], accessToken: AccessToken.current, httpMethod: .GET, apiVersion: FacebookCore.GraphAPIVersion.defaultVersion)
request.start { (response, result) in
switch result {
case .success(let value):
print(value.dictionaryValue!)
case .failed(let error):
print(error)
}
}
let storyboard = self.storyboard?.instantiateViewController(withIdentifier: "SVC") as! SecondViewController
self.present(storyboard, animated: true, completion: nil)
} else {
let loginManager=LoginManager()
loginManager.logIn(readPermissions: [ReadPermission.publicProfile, .email, .userFriends, .userBirthday], viewController : self) { loginResult in
switch loginResult {
case .failed(let error):
print(error)
case .cancelled:
print("User cancelled login")
case .success(let grantedPermissions, let declinedPermissions, let accessToken):
print("Logged in : \(grantedPermissions), \n \(declinedPermissions), \n \(accessToken.appId), \n \(accessToken.authenticationToken), \n \(accessToken.expirationDate), \n \(accessToken.userId!), \n \(accessToken.refreshDate), \n \(accessToken.grantedPermissions!)")
let request = GraphRequest(graphPath: "me", parameters: ["fields": "id, email, name, first_name, last_name, picture.type(large)"], accessToken: AccessToken.current, httpMethod: .GET, apiVersion: FacebookCore.GraphAPIVersion.defaultVersion)
request.start { (response, result) in
switch result {
case .success(let value):
print(value.dictionaryValue!)
case .failed(let error):
print(error)
}
}
let storyboard = self.storyboard?.instantiateViewController(withIdentifier: "SVC") as! SecondViewController
self.navigationController?.pushViewController(storyboard, animated: true)
}
}
}
}
有关完整详细信息，https://developers.facebook.com/docs/graph-api/reference/user