问题
I'm currently creating a test application to test using the latest facebook SDK to update our existing application problem is that I need to get the email address which I know depends if the user has provided one on his account. Now the account I'm using to test provides one for sure but for unknown reason the facebook SDK only provides the user_id and the fullname of the account and nothing else. I'm confused on this since the the SDK3 and above provides more information than the updated SDK4 and I'm lost on how to get the email as all the answers I've seen so far doesn't provide the email on my end. Here's my code so far:
Login Button
@OnClick(R.id.btn_login)
public void loginFacebook(){
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile", "email"));
}
LoginManager Callback:
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
requestUserProfile(loginResult);
}
@Override
public void onCancel() {
Toast.makeText(getBaseContext(),"Login Cancelled", Toast.LENGTH_SHORT).show();
}
@Override
public void onError(FacebookException e) {
Toast.makeText(getBaseContext(),"Problem connecting to Facebook", Toast.LENGTH_SHORT).show();
}
});
And the request for user profile:
public void requestUserProfile(LoginResult loginResult){
GraphRequest.newMeRequest(
loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject me, GraphResponse response) {
if (response.getError() != null) {
// handle error
} else {
try {
String email = response.getJSONObject().get("email").toString();
Log.e("Result", email);
} catch (JSONException e) {
e.printStackTrace();
}
String id = me.optString("id");
// send email and id to your web server
Log.e("Result1", response.getRawResponse());
Log.e("Result", me.toString());
}
}
}).executeAsync();
}
The JSON response returns only the ID and full name of my account but doesn't include the email. Did I missed out something?
回答1:
You need to ask for parameters to facebook in order to get your data. Here I post my function where I get the facebook data. The key is in this line:
parameters.putString("fields", "id, first_name, last_name, email,gender, birthday, location"); // Parámetros que pedimos a facebook
Hope it helps you.
btnLoginFb.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
System.out.println("onSuccess");
progressDialog = new ProgressDialog(LoginActivity.this);
progressDialog.setMessage("Procesando datos...");
progressDialog.show();
String accessToken = loginResult.getAccessToken().getToken();
Log.i("accessToken", accessToken);
GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
Log.i("LoginActivity", response.toString());
// Get facebook data from login
Bundle bFacebookData = getFacebookData(object);
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id, first_name, last_name, email,gender, birthday, location"); // Parámetros que pedimos a facebook
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
System.out.println("onCancel");
}
@Override
public void onError(FacebookException exception) {
System.out.println("onError");
Log.v("LoginActivity", exception.getCause().toString());
}
});
private Bundle getFacebookData(JSONObject object) {
try {
Bundle bundle = new Bundle();
String id = object.getString("id");
try {
URL profile_pic = new URL("https://graph.facebook.com/" + id + "/picture?width=200&height=150");
Log.i("profile_pic", profile_pic + "");
bundle.putString("profile_pic", profile_pic.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
return null;
}
bundle.putString("idFacebook", id);
if (object.has("first_name"))
bundle.putString("first_name", object.getString("first_name"));
if (object.has("last_name"))
bundle.putString("last_name", object.getString("last_name"));
if (object.has("email"))
bundle.putString("email", object.getString("email"));
if (object.has("gender"))
bundle.putString("gender", object.getString("gender"));
if (object.has("birthday"))
bundle.putString("birthday", object.getString("birthday"));
if (object.has("location"))
bundle.putString("location", object.getJSONObject("location").getString("name"));
return bundle;
}
catch(JSONException e) {
Log.d(TAG,"Error parsing JSON");
}
return null;
}
回答2:
Instead of getting the value of the graphResponse, access the email using the JSONObject me
userEmail = jsonObject.getString("email");
回答3:
Hope it helps you
/*** setupFacebook stuff like make login with facebook and get the userId,Name and Email*/
private void setupFacebookStuff() {
Log.e(TAG, "key hash= " + Utils.getKeyHash(SplashActivity.this, getPackageName()));
// This should normally be on your application class
FacebookSdk.sdkInitialize(SplashActivity.this);
accessTokenTracker = new AccessTokenTracker() {
@Override
protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken currentAccessToken) {
currentAccessToken.getToken();
}
};
loginManager = LoginManager.getInstance();
callbackManager = CallbackManager.Factory.create();
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
preference.setUserLogin(true);
final GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
try {
Log.e("id", "" + object);
if (object.has(getString(R.string.fbParamId))) {
final String userId = object.optString(getString(R.string.fbParamId));
final String userPicture = "https://graph.facebook.com/" + object.optString(getString(R.string.fbParamId)) + "/picture?type=large";
preference.setUserId(userId);
preference.setUserPictureUrl(userPicture);
}
if (object.has(getString(R.string.fbParamUserName))) {
final String userName = object.optString(getString(R.string.fbParamUserName));
preference.setUserName(userName);
}
if (object.has(getString(R.string.fbParamEmail))) {
final String userEmail = object.optString(getString(R.string.fbParamEmail));
preference.setUserName(userEmail);
Log.e("useremail", userEmail);
}
callMainActivity(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
final Bundle parameters = new Bundle();
parameters.putString("fields", "name,email,id");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
Toast.makeText(getBaseContext(), "Login Cancelled", Toast.LENGTH_SHORT).show();
}
@Override
public void onError(FacebookException error) {
Toast.makeText(getBaseContext(), "Problem connecting to Facebook", Toast.LENGTH_SHORT).show();
Log.e(TAG, "Facebook login error " + error);
}
});
}
回答4:
You can also use GraphResponse object to get the values
LoginManager.getInstance().registerCallback(callbackManager,
new FacebookCallback<LoginResult>()
{
@Override
public void onSuccess(LoginResult loginResult)
{
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
Log.v("LoginActivity", response.toString());
try {
// Application code
String email = response.getJSONObject().getString("email");
txtStatus.setText("Login Success \n" + email);
}catch(Exception e){
e.printStackTrace();;
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender,birthday");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel()
{
txtStatus.setText("==============Login Cancelled=============");
}
@Override
public void onError(FacebookException exception)
{
txtStatus.setText("==============Login Error=================");
exception.printStackTrace();
}
});
回答5:
I guess getting email permissions can help..
LoginManager.getInstance().logInWithReadPermissions(
fragmentOrActivity,
Arrays.asList("email"));
回答6:
Putting this code:
btnLoginFb.setReadPermissions(Arrays.asList("email"));
before
RegisterCallback
should solve the problem.
回答7:
Information
If you are giving any permission to get an email address. then, Facebook can not every time gives you email address or some other details.
when, Facebook user is not signup with his email-address.then Facebook can't provide you his email address.
if user is login with Facebook using email address then Facebook is provide email to you.
Facebook SDK provide only public details.
check a login with Facebook using email-address and also with phone number through.
来源：https://stackoverflow.com/questions/32196682/facebook-android-sdk-4-5-0-get-email-address