I'm trying to get information through the facebook sdk but so far I'm getting only the id and the name of the user, although I'm sure there is an email available, as it is my account. I've been looking at several answer here but none of them solved my problem so far. What am I doing wrong, and why is it not returning more data as I am requesting several permissions?
Here is my code:
fbLoginManager.logInWithReadPermissions(["public_profile", "email", "user_friends", "user_about_me", "user_birthday"], handler: { (result, error) -> Void in
if ((error) != nil)
{
// Process error
println("There were an error: \(error)")
}
else if result.isCancelled {
// Handle cancellations
fbLoginManager.logOut()
}
else {
var fbloginresult : FBSDKLoginManagerLoginResult = result
if(fbloginresult.grantedPermissions.contains("email"))
{
println(fbloginresult)
self.returnUserData()
}
}
})
And the function to get the user data:
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 userName : NSString = result.valueForKey("name") as? NSString {
println("User Name is: \(userName)")
}
if let userEmail : NSString = result.valueForKey("email") as? NSString {
println("User Email is: \(userEmail)")
}
}
})
}
Which returns:
fetched user: {
id = 55555555;
name = "Kali Aney";
}
User Name is: Kali Aney
Facebook Graph API broke it’s backward compatibility (when used in a default fashion) Since Graph-API version 2.4 (Pod Version 4.4.0).
FB Graph-API 2.4 does NOT return all default fields for user
To resolve this you can either use explicitly graph version 2.3:
[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:nil tokenString:[FBSDKAccessToken currentAccessToken].tokenString version:@"v2.3" HTTPMethod:nil]
in which case FB assures v2.3 will be available at least 2 years from now. https://developers.facebook.com/docs/graph-api/overview:
The Graph API has multiple versions available to access at any one time. Each version contains a set ofcore fields and edge operations. We make a guarantee that those core APIs will be available and un-modified in that version for at least 2 years from release. The platform changelog can tell you which versions are currently available.
OR
you can use new Graph-API (v2.4) in by asking for specific fields you are interested in:
[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields" : @"email,name"}]
I struggled with this problem for almost a day until finding the answer by @HeTzi, which worked perfectly. The swift version of such a request is:
func referenceFBData() {
var request = FBSDKGraphRequest(graphPath:"me", parameters: ["fields":"email,first_name,gender"]);
request.startWithCompletionHandler { (connection : FBSDKGraphRequestConnection!, result : AnyObject!, error : NSError!) -> Void in
if error == nil {
println("The information requested is : \(result)")
} else {
println("Error getting information \(error)");
}
}
}
Remember that you must first request the proper read permissions to obtain data using this request.
In my case email was not verified by the user thats why not getting it even after granting the permissions ;)
this works... hope it helps..
NSMutableDictionary* parameters = [NSMutableDictionary dictionary];
[parameters setValue:@"id, name, email" forKey:@"fields"];
[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:parameters]
startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error)
{
NSLog(@"Fetched user is:%@", result);
}];
A function in swift like this:
func fbsignup() {
let lgManager = FBSDKLoginManager()
lgManager.logInWithReadPermissions(["public_profile","email"], fromViewController: self,handler: { (result:FBSDKLoginManagerLoginResult!, error:NSError!) -> Void in
if error != nil{
print("facebook error")
}else if result.isCancelled {
print("Canceled")
}else{
if result.grantedPermissions.contains("email") {
if (FBSDKAccessToken.currentAccessToken() != nil) {
FBSDKGraphRequest(graphPath: "me", parameters: ["fields":"email,name"]) .startWithCompletionHandler({ (connection:FBSDKGraphRequestConnection!, result:AnyObject!, error:NSError!) -> Void in
print(result)
})
}
}
}
})
}
Tested in Swift 2.2
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
print("User Logged In")
if ((error) != nil)
{
// Process error
}
else if result.isCancelled {
// Handle cancellations
}
else {
// If you ask for multiple permissions at once, you
// should check if specific permissions missing
if result.grantedPermissions.contains("email")
{
// Do work
getUserData()
}
}}
func getUserData()
{
if ((FBSDKAccessToken.currentAccessToken()) != nil)
{
let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "email, name"])
graphRequest.startWithCompletionHandler({ (connection, result, error) -> Void in
if ((error) != nil)
{
// Process error
print("Error: \(error)")
}
else
{
print("fetched user: \(result)")
let userName : NSString = result.valueForKey("name") as! NSString
print("User Name is: \(userName)")
let userEmail : NSString = result.valueForKey("email") as! NSString
print("User Email is: \(userEmail)")
}
})
}
}
I have never worked with IOS, but I have a lot of experience with Facebook. My first observation is that whenever you request a Facebook permission, you must make sure that: - you let your users know why you need that permission - you respect Facebook's terms - you will surely need that permission in the near future
This list
["public_profile", "email", "user_friends", "user_about_me", "user_birthday"]
seems to be vague. You must make sure that you request for the minimal set of privileges you will surely need in the near future.
As about the request itself, you must make sure that you use a valid Facebook session. I do it like this in PHP:
$request = new \Facebook\FacebookRequest( self::$session, 'GET', '/me' );
$response = $request->execute();
// get response
$graphObject = $response->getGraphObject()->asArray();
I am sure you must have something like getGraphObject in your SDK as well.
Use these functions this will work for sure
@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"]).start(completionHandler: { (connection, result, error) in
if(error == nil){
print("result")
}
})
}
}
and connect the fbsignup(_sender: Any) function with your button
来源：https://stackoverflow.com/questions/31410793/ios-facebook-sdk-login-doesnt-return-email-despite-permissions-granted