Unable to get profile info from Facebook in android SDK 4

问题

I am unable to get basic profile info from the ProfileTracker function from Facebook SDK v4. How can I get all the info?

I am currently successfully logging in and geting accesstoken and user-id.

Code:

public class HelloFacebookSampleActivity extends FragmentActivity {



    LoginButton loginButton ;

    CallbackManager callbackManager;


    private String fbUserID;
    private String fbProfileName;
    private String fbAuthToken;

    private AccessTokenTracker accessTokenTracker;


    private ProfileTracker profileTracker;


    private static final String TAG = "FacebookLogin";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);



        FacebookSdk.sdkInitialize(getApplicationContext());

        callbackManager = CallbackManager.Factory.create();

        setContentView(R.layout.test);
        loginButton = (LoginButton) findViewById(R.id.login_button);
        loginButton.setReadPermissions("user_friends,email,user_birthday,user_likes");



        profileTracker = new ProfileTracker() {
            @Override
            protected void onCurrentProfileChanged(
                    Profile oldProfile,
                    Profile currentProfile) {


                fbProfileName = currentProfile.getName();

                Toast.makeText(getBaseContext(),"profile",Toast.LENGTH_LONG).show();


                Log.d(TAG, "FirstName: " + currentProfile.getFirstName() );

                Log.d(TAG, "LastName: " + currentProfile.getLastName() );

                Log.d(TAG, " MiddleName: " + currentProfile.getMiddleName() );

                Log.d(TAG, "LinkUri: " + currentProfile.getLinkUri() );

                Log.d(TAG, "ProfilePictureUri: " + currentProfile.getProfilePictureUri(250,250) );




            }
        };


        accessTokenTracker = new AccessTokenTracker() {
            @Override
            protected void onCurrentAccessTokenChanged(
                    AccessToken oldAccessToken,
                    AccessToken currentAccessToken) {
                fbAuthToken = currentAccessToken.getToken();
                fbUserID = currentAccessToken.getUserId();



                Log.d(TAG, "User id: " + fbUserID);
                Log.d(TAG, "Access token is: " + fbAuthToken);


                // Ensure that our profile is up to date
                Profile.fetchProfileForCurrentAccessToken();
            }
        };




        // Callback registration
        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {




            }

            @Override
            public void onCancel() {
                // App code

                Toast.makeText(getBaseContext(),"cancel",Toast.LENGTH_LONG).show();
            }

            @Override
            public void onError(FacebookException exception) {
                // App code
                Toast.makeText(getBaseContext(),"er",Toast.LENGTH_LONG).show();
            }
        });










    }




    @Override
    public void onDestroy() {
        super.onDestroy();

        accessTokenTracker.stopTracking();
        profileTracker.stopTracking();
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);
    }

Error:

java.lang.NullPointerException: Attempt to invoke interface method 'void com.android.okhttp.internal.http.Transport.writeRequestHeaders(com.android.okhttp.Request)' on a null object reference
        at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:611)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:388)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
        at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
        at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:25)

回答1:

To make this work, there are 3 parts of code that you need to incorporate into your code:

1. Create your profileTracker:

   mProfileTracker = new ProfileTracker() {
       @Override
       protected void onCurrentProfileChanged(Profile profile, Profile profile2) {
           updateUI(); //this is the third piece of code I will discuss below
       }
   };
   

2. Make sure you start your profileTracker in onCreate as per Facebook's doc:

   mProfileTracker.startTracking();
   

3. Get the profile information:

   private void updateUI(){
   
        boolean enableButtons = AccessToken.getCurrentAccessToken() != null;
   
   Profile profile = Profile.getCurrentProfile();
   if (profile == null) {
       Log.e("Profile", "null");
   }
   if (enableButtons && profile != null) {
       Log.e("Access Token",AccessToken.getCurrentAccessToken().toString());
       Log.e("TabSocial", profile.getName());
   }
   

   }

I discovered this after spending 3 hours this morning testing out the HelloFacebookSample app.

回答2:

You can look this example project on github. I tried this code and work. https://github.com/oliguo/android-facebook

You must add info field there

Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,birthday,gender");
request.setParameters(parameters);
request.executeAsync();

Good luck there.

回答3:

From my experience, you have to manually call getCurrentProfile, even in Profile tracker listener. Try this code, I'm sure it works.

Profile.getCurrentProfile() //get current instance of logged profile
Profile.getCurrentProfile().getId() //get current id
Profile.getCurrentProfile().getName() //get current user name

And here's my code snippet:

profileTracker = new ProfileTracker() { //initializing profile tracker, so it can respond to it's state changes
    @Override
    protected void onCurrentProfileChanged(Profile oldProfile, Profile currentProfile) { //if new profile is logged
        Profile.fetchProfileForCurrentAccessToken(); //manually force profile fetching from current token
        if(Profile.getCurrentProfile() != null) { //if it available
            Log.i(TAG, Profile.getCurrentProfile().getName() + ", " + Profile.getCurrentProfile().getId() + ", " + Profile.getCurrentProfile().getLinkUri());
        } else {
            Log.i(TAG, "Profile is null");
            showLoginActivity(); //no profile - login again
        }
    }
};

Also, you can find more info, in documentation.

You an also get that info, in onSuccess Login callback method, just add that snippet:

      if(Profile.getCurrentProfile() != null && AccessToken.getCurrentAccessToken() != null) {
        Log.i(TAG, Profile.getCurrentProfile().getName() + ", " + Profile.getCurrentProfile().getId() + ", " + Profile.getCurrentProfile().getLinkUri());
        } else {
        AccessToken.getCurrentAccessToken();
        Profile.fetchProfileForCurrentAccessToken();
        Log.i(TAG, Profile.getCurrentProfile().getName() + ", " + Profile.getCurrentProfile().getId() + ", " + Profile.getCurrentProfile().getLinkUri());
        }

来源：https://stackoverflow.com/questions/29667306/unable-to-get-profile-info-from-facebook-in-android-sdk-4