Set Permission for Getting User's Email Id from Facebook Login

Set permission for getting User's email ID from Facebook Login

Solved it: Here is what I have done...

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mLogin = (Button) findViewById(R.id.logIn);
    mLogin.setOnClickListener(this);

}

@Override
public void onClick(View v) {

    Session currentSession = Session.getActiveSession();
    if (currentSession == null || currentSession.getState().isClosed()) {
        Session session = new Session.Builder(context).build();
        Session.setActiveSession(session);
        currentSession = session;
    }

    if (currentSession.isOpened()) {
        // Do whatever u want. User has logged in

    } else if (!currentSession.isOpened()) {
        // Ask for username and password
        OpenRequest op = new Session.OpenRequest((Activity) context);

        op.setLoginBehavior(SessionLoginBehavior.SUPPRESS_SSO);
        op.setCallback(null);

        List<String> permissions = new ArrayList<String>();
        permissions.add("publish_stream");
        permissions.add("user_likes");
        permissions.add("email");
        permissions.add("user_birthday");
        op.setPermissions(permissions);

        Session session = new Builder(MainActivity.this).build();
        Session.setActiveSession(session);
        session.openForPublish(op);
    }
}

public void call(Session session, SessionState state, Exception exception) {
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (Session.getActiveSession() != null)
        Session.getActiveSession().onActivityResult(this, requestCode,
                resultCode, data);

    Session currentSession = Session.getActiveSession();
    if (currentSession == null || currentSession.getState().isClosed()) {
        Session session = new Session.Builder(context).build();
        Session.setActiveSession(session);
        currentSession = session;
    }

    if (currentSession.isOpened()) {
        Session.openActiveSession(this, true, new Session.StatusCallback() {

            @Override
            public void call(final Session session, SessionState state,
                    Exception exception) {

                if (session.isOpened()) {

                    Request.executeMeRequestAsync(session,
                            new Request.GraphUserCallback() {

                                @Override
                                public void onCompleted(GraphUser user,
                                        Response response) {
                                    if (user != null) {

                                        TextView welcome = (TextView) findViewById(R.id.welcome);
                                        welcome.setText("Hello "
                                                + user.getName() + "!");

                                        access_token = session
                                                .getAccessToken();
                                        firstName = user.getFirstName();
                                        fb_user_id = user.getId();

                                        System.out
                                                .println("Facebook Access token: "
                                                        + access_token);
                                        System.out.println("First Name:"
                                                + firstName);
                                        System.out.println("FB USER ID: "
                                                + fb_user_id);

                                    }
                                }
                            });
                }
            }
        });
    }
}

Now I'm able to get email permission with rest of the publish permission.

Marking this as accepted answer so that it can help others.

Facebook oAuth: Force email permission

They are using an old App created before end of April 2014, it was different back then. You can´t force it anymore, you can only check if the user authorized the permissions after login, with the return_scopes flag, for example:

https://developers.facebook.com/docs/reference/javascript/FB.login/v2.2

Facebook login not returning email id

To fetch not only email id, everything you can get.Here is code.

private CallbackManager callbackManager;
private LoginButton loginButton;

inside OnCreate() method

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_layout);
    loginButton = (LoginButton) findViewById(R.id.login_button);
   // don't forget to give this.
   loginButton.setReadPermissions(Arrays.asList("public_profile,email,user_birthday"));
   loginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getDetails();
        }
    });
   }
  private void getDetails() {
    //for facebook
    // FacebookSdk.sdkInitialize(getApplicationContext());
    callbackManager = CallbackManager.Factory.create();
    //register callback object for facebook result
    LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
                @Override
                public void onSuccess(LoginResult loginResult) {

                    GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(),
                            new GraphRequest.GraphJSONObjectCallback() {
                                @Override
                                public void onCompleted(JSONObject jsonObject, GraphResponse graphResponse) {
                                    try {
                                        Profile profile = Profile.getCurrentProfile();
                                        if (profile != null) {
                                           String facebook_id = profile.getId();
                                            String f_name = profile.getFirstName();
                                           String l_name = profile.getLastName();
                                            profile_image = profile.getProfilePictureUri(400, 400).toString();
                                        }
                                       String email_id = jsonObject.getString("email"); //email id
                                    } catch (JSONException e) {
                                        Logger.logError(e);
                                    }
                                }

                            });

Happy coding.

facebook api email permissions

If you go into your developer page and click on the app settings you can edit permissions the app requests. If you click in the User & Friend Permissions field and start typing email, you can tell your app to request email permissions. If you then click on the "Preview Login Dialogue" you will see it asks for exactly what you linked to.

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