问题
I'm currently developing an application which aims to authenticate any user by using Facebook acoount.
I have a trouble in getting user email from user's account. My code is below
private void signInWithFacebook() {
SessionTracker mSessionTracker = new SessionTracker(getBaseContext(), new StatusCallback() {
public void call(Session session, SessionState state, Exception exception) {
}
}, null, false);
String applicationId = Utility.getMetadataApplicationId(getBaseContext());
Session mCurrentSession = mSessionTracker.getSession();
if (mCurrentSession == null || mCurrentSession.getState().isClosed()) {
mSessionTracker.setSession(null);
Session session = new Session.Builder(getBaseContext()).setApplicationId(applicationId).build();
Session.setActiveSession(session);
mCurrentSession = session;
}
if (!mCurrentSession.isOpened()) {
Session.OpenRequest openRequest = null;
openRequest = new Session.OpenRequest(FacebookLoginActivity.this);
if (openRequest != null) {
openRequest.setDefaultAudience(SessionDefaultAudience.FRIENDS);
openRequest.setPermissions(Arrays.asList("user_birthday", "email", "user_location"));
openRequest.setLoginBehavior(SessionLoginBehavior.SSO_WITH_FALLBACK);
mCurrentSession.openForRead(openRequest);
}
}else {
Request.executeMeRequestAsync(mCurrentSession, new Request.GraphUserCallback() {
public void onCompleted(GraphUser user, Response response) {
Log.w("myConsultant", user.getId() + " " + user.getName() + " " + user.getLink() + " "+ response);
}
});
}
}
I am using Facebook SDK 3.0.1 for Android. I have set the permissions required by the Facebook Graph Api. In the response xml, there is no such field like email. Facebook Sdk documentations are not good enough and I don't know hot to obtain email address.
Your prompt reply will be greatly appreciated.
Thanks in advance,
回答1:
Email is not a default field that's returned. Instead, you should create a meRequest, and pass it a parameter like: fields=email.
Request me = Request.newMeRequest(mCurrentSession, new GraphRequestCallback() {...});
Bundle params = me.getParameters();
params.putString("fields", "email,name");
me.setParameters(params);
me.executeAsync();
回答2:
you call just like this under regular things - only different you cannot directly user.email
System.out.println(user.asMap().get("email").toString());
regular :
@Override
public void onClick(View v) {
// start Facebook Login
Session.openActiveSession(Giris.this, true, new Session.StatusCallback() {
// callback when session changes state
@Override
public void call(Session session, SessionState state, Exception exception) {
if (session.isOpened()) {
// make request to the /me API
Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {
// callback after Graph API response with user object
@Override
public void onCompleted(GraphUser user, Response response) {
if (user != null) {
System.out.println(user.getName());
System.out.println(user.getBirthday());
System.out.println(user.getFirstName());
System.out.println(user.getLastName());
System.out.println(user.getLink());
System.out.println(user.getUsername());
System.out.println(user.getLocation());
System.out.println("facebook user id" + user.getId());
System.out.println(user.asMap().get("email").toString());
// Session.OpenRequest open = new Session.OpenRequest(Login)
}
}
});
}
}
});
}
回答3:
just call this method will return user email id to you.
private void doSocialNetworkinWithFacebook()
{
// check for session
Session session=Session.getActiveSession();
if (session != null && session.isOpened())
{
// user is already login show
try
{
Session.OpenRequest request = new Session.OpenRequest(this);
request.setPermissions(Arrays.asList("email", "publish_actions"));
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
Request.executeMeRequestAsync(session, new Request.GraphUserCallback()
{
// callback after Graph API response with user object
@Override
public void onCompleted(GraphUser user, Response response)
{
if (user != null)
{
Toast.makeText(activity, "Welcome "+user.getName(), Toast.LENGTH_SHORT).show();
// publishFeedDialog(session);
try
{
strFirstName = user.getFirstName().toString();
strLocation = user.getLocation().getProperty("name").toString();
strEmail = user.asMap().get("email").toString();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
strEmail="";
}
runOnUiThread(new Runnable()
{
public void run()
{
setUserInfoFromFacebook(strFirstName, strLocation, strEmail);
}
});
}
}
});
}
else
{
// user is not log in
//show login screen
// start Facebook Login
try
{
Session.OpenRequest request = new Session.OpenRequest(this);
request.setPermissions(Arrays.asList("email", "publish_actions"));
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
Session.openActiveSession(activity, true, new Session.StatusCallback()
{
// callback when session changes state
@Override
public void call(final Session session, SessionState state, Exception exception)
{
//session.openForRead(new Session.OpenRequest(this).setPermissions(Arrays.asList("email")));
Log.d(TAG, "Session :"+session.toString());
Log.d(TAG, "Session is opened :"+session.isOpened());
if (session.isOpened())
{
// make request to the /me API
Request.executeMeRequestAsync(session, new Request.GraphUserCallback()
{
// callback after Graph API response with user object
@Override
public void onCompleted(GraphUser user, Response response)
{
if (user != null)
{
Toast.makeText(activity, "Welcome "+user.getName(), Toast.LENGTH_SHORT).show();
// publishFeedDialog(session);
try
{
strFirstName = user.getFirstName().toString();
strLocation = user.getLocation().getProperty("name").toString();
strEmail = user.asMap().get("email").toString();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
strEmail="";
}
runOnUiThread(new Runnable()
{
public void run()
{
setUserInfoFromFacebook(strFirstName, strLocation, strEmail);
}
});
}
}
});
}
else if(session.isClosed())
{
Toast.makeText(activity, "Unable to connect facebook, please try later..",Toast.LENGTH_SHORT).show();
}
}
});
}
}
回答4:
First add the appropriate permission, then fetch the email using the getProperty function.
permissions = Arrays.asList("email","languages","user_location","user_likes", "user_education_history","user_work_history","user_hometown","user_about_me","user_status");
Log.i(TAG, "user_email : " + user.getProperty("email"));
来源：https://stackoverflow.com/questions/16014117/getting-email-address-by-using-facebook-sdk-3-0-1-for-android