问题
I am using Facebook SDK 3.2 for login in my android app.
Login, logout functions working fine.
My Problem:
after login want to retrieve the Facebook Username and Email.
Username Showing Perfectly Email is not Showing.
Please help me to solve it.
MainActivity.java
public class MainActivity extends FragmentActivity {
String TAG="MainActivity";
private static final String PERMISSION = "publish_actions";
//private static final String PERMISSION = "email";
private final String PENDING_ACTION_BUNDLE_KEY = "pending_action";
private Button postStatusUpdateButton;
private LoginButton loginButton;
private ProfilePictureView profilePictureView;
private TextView greeting;
private PendingAction pendingAction = PendingAction.NONE;
private GraphUser user;
private GraphPlace place;
private List<GraphUser> tags;
private boolean canPresentShareDialog;
Button LogoutButton,Pro;
/* private static final List<String> PERMISSION = Arrays.asList(
"email","publish_actions");*/
private enum PendingAction
{
NONE, POST_STATUS_UPDATE
}
private UiLifecycleHelper uiHelper;
private Session.StatusCallback callback = new Session.StatusCallback() {
@Override
public void call(Session session, SessionState state,
Exception exception)
{
onSessionStateChange(session, state, exception);
}
};
private FacebookDialog.Callback dialogCallback = new FacebookDialog.Callback() {
@Override
public void onError(FacebookDialog.PendingCall pendingCall,
Exception error, Bundle data) {
Log.d(TAG, String.format("Error: %s", error.toString()));
}
@Override
public void onComplete(FacebookDialog.PendingCall pendingCall,
Bundle data) {
Log.d(TAG, "Success!");
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
uiHelper = new UiLifecycleHelper(this, callback);
uiHelper.onCreate(savedInstanceState);
// Can we present the share dialog for regular links?
canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
if (savedInstanceState != null) {
String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
pendingAction = PendingAction.valueOf(name);
}
setContentView(R.layout.activity_main);
loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback()
{
@Override
public void onUserInfoFetched(GraphUser user)
{
MainActivity.this.user = user;
updateUI();
// It's possible that we were waiting for this.user to
// be populated in order to post a status update.
handlePendingAction();
}
});
profilePictureView = (ProfilePictureView) findViewById(R.id.profilePicture);
greeting = (TextView) findViewById(R.id.greeting);
postStatusUpdateButton = (Button) findViewById(R.id.postStatusUpdateButton);
postStatusUpdateButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
performPublish(PendingAction.POST_STATUS_UPDATE,canPresentShareDialog);
}
});
LogoutButton=(Button)findViewById(R.id.LogoutButton);
LogoutButton.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
//callFacebookLogout(session);
Logout();
}
});
}
//override lifecycle methods so that UiLifecycleHelper know about state of the activity
@Override
protected void onResume() {
super.onResume();
uiHelper.onResume();
updateUI();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
uiHelper.onSaveInstanceState(outState);
outState.putString(PENDING_ACTION_BUNDLE_KEY, pendingAction.name());
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
uiHelper.onActivityResult(requestCode, resultCode, data, dialogCallback);
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
}
private void onSessionStateChange(Session session, SessionState state,Exception exception)
{
if (state.isOpened()) {
Toast.makeText(getApplicationContext(), "User logged in...", Toast.LENGTH_SHORT).show();
getUserData(session,state);
} else if (state.isClosed()) {
Toast.makeText(getApplicationContext(), "User logged out...", Toast.LENGTH_SHORT).show();
}
if (pendingAction != PendingAction.NONE
&& (exception instanceof FacebookOperationCanceledException
|| exception instanceof FacebookAuthorizationException)) {
new AlertDialog.Builder(MainActivity.this)//if permission is not granted
.setTitle(R.string.cancelled)
.setMessage(R.string.permission_not_granted)
.setPositiveButton(R.string.ok, null).show();
pendingAction = PendingAction.NONE;
} else if (state == SessionState.OPENED_TOKEN_UPDATED) {
handlePendingAction();
}
updateUI();
}
private void updateUI()
{
Session session = Session.getActiveSession();
boolean enableButtons = (session != null && session.isOpened());
postStatusUpdateButton.setEnabled(enableButtons
|| canPresentShareDialog);
if (enableButtons && user != null)
{
profilePictureView.setProfileId(user.getId());
greeting.setText(getString(R.string.hello_user, user.getFirstName()));
} else {
profilePictureView.setProfileId(null);
greeting.setText(null);
}
}
@SuppressWarnings("incomplete-switch")
private void handlePendingAction() {
PendingAction previouslyPendingAction = pendingAction;
// These actions may re-set pendingAction if they are still pending, but we assume they
// will succeed.
pendingAction = PendingAction.NONE;
switch (previouslyPendingAction) {
case POST_STATUS_UPDATE:
postStatusUpdate();
break;
}
}
private interface GraphObjectWithId extends GraphObject {
String getId();
}
private void showPublishResult(String message, GraphObject result,
FacebookRequestError error) {
String title = null;
String alertMessage = null;
if (error == null) {
title = getString(R.string.success);
String id = result.cast(GraphObjectWithId.class).getId();
alertMessage = getString(R.string.successfully_posted_post,
message, id);
} else {
title = getString(R.string.error);
alertMessage = error.getErrorMessage();
}
new AlertDialog.Builder(this).setTitle(title).setMessage(alertMessage)
.setPositiveButton(R.string.ok, null).show();
}
// create sample post to update on facebook
private FacebookDialog.ShareDialogBuilder createShareDialogBuilderForLink() {
return new FacebookDialog.ShareDialogBuilder(this)
.setName("Hello Facebook")
.setDescription("this is sample post from androidSRC.net to demonstrate facebook login in your android application")
.setLink("http://androidsrc.net/");
}
private void postStatusUpdate() {
if (canPresentShareDialog) {
FacebookDialog shareDialog = createShareDialogBuilderForLink().build();
uiHelper.trackPendingDialogCall(shareDialog.present());
} else if (user != null && hasPublishPermission()) {
final String message = getString(R.string.status_update,
user.getFirstName(), (new Date().toString()));
Request request = Request.newStatusUpdateRequest(
Session.getActiveSession(), message, place, tags,
new Request.Callback() {
@Override
public void onCompleted(Response response) {
showPublishResult(message,
response.getGraphObject(),
response.getError());
}
});
request.executeAsync();
} else {
pendingAction = PendingAction.POST_STATUS_UPDATE;
}
}
//check if app has permission to publish on facebook
private boolean hasPublishPermission() {
Session session = Session.getActiveSession();
return session != null && session.getPermissions().contains("publish_actions")&&session.getPermissions().contains("email");
}
private void performPublish(PendingAction action, boolean allowNoSession) {
Session session = Session.getActiveSession();
if (session != null) {
pendingAction = action;
if (hasPublishPermission()) {
// We can do the action right away.
handlePendingAction();
return;
} else if (session.isOpened()) {
// We need to get new permissions, then complete the action when
// we get called back.
session.requestNewPublishPermissions(new Session.NewPermissionsRequest(
this, PERMISSION));
return;
}
}
if (allowNoSession) {
pendingAction = action;
handlePendingAction();
}
}
public void Logout()
{
if (Session.getActiveSession() != null)
{
Session.getActiveSession().closeAndClearTokenInformation();
Toast.makeText(getApplicationContext(), "logged out...", Toast.LENGTH_SHORT).show();
}
Session.setActiveSession(null);
}
private void getUserData(Session session, SessionState state)
{
if (state.isOpened())
{
Request.newMeRequest(session, new Request.GraphUserCallback()
{
@Override
public void onCompleted(GraphUser user, Response response)
{
if (response != null)
{
try
{
String name = user.getName();
// If you asked for email permission
String email = (String) user.getProperty("email");
// Log.e(LOG_TAG, "Name: " + name + " Email: " + email);
Toast.makeText(getApplicationContext(), "Name: " + name + " Email: " + email, Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{
e.printStackTrace();
//Log.d(LOG_TAG, "Exception e");
}
}
}
}).executeAsync();
}
}
method for getting the User data from Facebook, after Logged in
private void getUserData(Session session, SessionState state)
{
if (state.isOpened())
{
Request.newMeRequest(session, new Request.GraphUserCallback()
{
@Override
public void onCompleted(GraphUser user, Response response)
{
if (response != null)
{
try
{
String name = user.getName();
// If you asked for email permission
String email = (String) user.getProperty("email");
// Log.e(LOG_TAG, "Name: " + name + " Email: " + email);
Toast.makeText(getApplicationContext(), "Name: " + name + " Email: " + email, Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{
e.printStackTrace();
//Log.d(LOG_TAG, "Exception e");
}
}
}
}).executeAsync();
}
}
回答1:
I found the Solution for my Question
I have Missed the Permission for getting the facebook Profile email in My code
added the permission below my login button inside oncreate method
loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton.setReadPermissions(Arrays.asList("email","user_photos"));
Now its working fine
来源：https://stackoverflow.com/questions/30802530/android-facebook-sdk-3-2-getting-profile-email-information-showing-null