使用Facebook SDK 4.0进行Android登录

Question

I hope anybody can help me ! I want to change my code for the new facebook sdk 4.0 but there is only a little description and i´m getting crazy and don´t know how to make the new code with facebook login button and accesstoken

target of this code is that the user logs in with his facebook account and checks if the user already exits. if not then insert new user with email and facebook id and name

I have marked the codes with //needs to be changed and //needs to be changed END

Thanx in advance for any help !!!

 import com.facebook.AccessToken; import com.facebook.CallbackManager; import com.facebook.FacebookCallback; import com.facebook.FacebookException; import com.facebook.FacebookSdk; import com.facebook.login.LoginResult; import com.facebook.login.widget.LoginButton; // import com.facebook.Request; //import com.facebook.Request.GraphUserCallback; // import com.facebook.Response; // import com.facebook.Session; // import com.facebook.SessionState; //import com.facebook.UiLifecycleHelper; // import com.facebook.model.GraphUser; // import com.facebook.widget.LoginButton; @SuppressLint("NewApi") public class AuthenticationFragment extends Fragment { LoginButton facebookLoginButton; // private UiLifecycleHelper uiHelper; String TAG = "Fragment"; Button btnLogin, btnCreateAccount; ProgressDialog dialogPrg; String userName = null; // New Facebook Added CallbackManager callbackManager; public static final AuthenticationFragment newInstance() { // TODO Auto-generated constructor stub AuthenticationFragment fragment = new AuthenticationFragment(); return fragment; } @Override public void onAttach(Activity activity) { // TODO Auto-generated method stub super.onAttach(activity); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // TODO Auto-generated method stub View view = inflater.inflate(R.layout.authentication_layout, container, false); facebookLoginButton = (LoginButton) view .findViewById(R.id.btnFacebookLogin); facebookLoginButton.setFragment(this); facebookLoginButton.setReadPermissions(Arrays.asList("email")); // New added for Facebook // Callback registration facebookLoginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() { @Override public void onSuccess(LoginResult loginResult) { // App code //login ok get access token AccessToken.getCurrentAccessToken(); } @Override public void onCancel() { // App code Log.i(TAG, "facebook login canceled"); } @Override public void onError(FacebookException exception) { // App code Log.i(TAG, "facebook login failed error"); } }); //New added for Facebook END btnLogin = (Button) view.findViewById(R.id.btn_login); btnCreateAccount = (Button) view.findViewById(R.id.btn_create_account); btnLogin.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(getActivity(), LoginActivity.class); startActivity(intent); } }); btnCreateAccount.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent intent = new Intent(getActivity(), CreateAccountActivity.class); startActivity(intent); } }); dialogPrg = new ProgressDialog(getActivity()); dialogPrg.setCanceledOnTouchOutside(false); return view; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // uiHelper = new UiLifecycleHelper(getActivity(), callback); // uiHelper.onCreate(savedInstanceState); } // Needs to be changed private Session.StatusCallback callback = new Session.StatusCallback() { @Override public void call(final Session session, final SessionState state, final Exception exception) { onSessionStateChange(session, state, exception); } }; // Needs to be changed END private void onSessionStateChange(Session session, SessionState state, Exception exception) { if (state.isOpened()) { Log.i("FB AUT FRAGMENT", "Logged in..."); } else if (state.isClosed()) { Log.i("FB AUT FRAGMENT", "Logged out..."); } } // Needs to be changed private void insertUser(Session session) { Request.newMeRequest(session, new GraphUserCallback() { @Override public void onCompleted(GraphUser user, Response response) { // TODO Auto-generated method stub new facebookUserCheck(user).start(); } }).executeAsync(); } // Needs to be changed END // Needs to be changed private class facebookUserCheck extends Thread { GraphUser user; public facebookUserCheck(GraphUser user) { // TODO Auto-generated constructor stub this.user = user; } // Needs to be changed @Override public void run() { // TODO Auto-generated method stub super.run(); // TODO Auto-generated method stub String handleInsertUser = getActivity().getResources().getString( R.string.users_json_url) + "facebook_user_check"; try { HttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost(handleInsertUser); MultipartEntity reqEntity = new MultipartEntity(); // Needs to be changed user.getId reqEntity.addPart("fb_id", new StringBody(user.getId())); // Needs to be changed END post.setEntity(reqEntity); HttpResponse res = client.execute(post); HttpEntity resEntity = res.getEntity(); final String response_str = EntityUtils.toString(resEntity); if (resEntity != null) { Log.i(TAG, response_str); getActivity().runOnUiThread(new Runnable() { public void run() { try { dialogPrg.dismiss(); JSONArray jsonArray = new JSONArray( response_str); if (jsonArray.length() == 1) { JSONObject obj = jsonArray.getJSONObject(0); User user = Ultils.parseUser(obj); UserSessionManager userSession = new UserSessionManager( getActivity()); userSession.storeUserSession(user); Intent intent = new Intent(getActivity(), HomeActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); } } catch (Exception e) { LayoutInflater inflater = LayoutInflater .from(getActivity()); View promptsView = inflater.inflate( R.layout.username_promtps_layout, null); AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder( getActivity()); // set prompts.xml to alertdialog builder alertDialogBuilder.setView(promptsView); final EditText message = (EditText) promptsView .findViewById(R.id.editTextDialogUserInput); alertDialogBuilder .setMessage(getResources().getString( R.string.choose_your_user_name)); // set dialog message alertDialogBuilder .setCancelable(false) .setPositiveButton( getResources().getString( R.string.ok_label), new DialogInterface.OnClickListener() { public void onClick( DialogInterface dialog, int id) { if (!Validator .validUserName(message .getText() .toString())) { showDialog(getResources() .getString( R.string.invalid_user_name)); return; } userName = message .getText() .toString(); new facebookUserRegister( user).start(); } }); // create alert dialog AlertDialog alertDialog = alertDialogBuilder .create(); // show it alertDialog.show(); } } }); } } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } } // Needs to be changed private class facebookUserRegister extends Thread { GraphUser user; public facebookUserRegister(GraphUser user) { // TODO Auto-generated constructor stub this.user = user; } // Needs to be changed END @Override public void run() { super.run(); getActivity().runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub dialogPrg.show(); } }); String handleInsertUser = getActivity().getResources().getString( R.string.users_json_url) + "facebook_user_register"; try { HttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost(handleInsertUser); MultipartEntity reqEntity = new MultipartEntity(); // Needs to be changed user.getId, user.getName, user.asMap reqEntity.addPart("fb_id", new StringBody(user.getId())); reqEntity.addPart("fullname", new StringBody(user.getName())); reqEntity.addPart("email", new StringBody(user.asMap().get("email").toString())); // Needs to be changed END reqEntity.addPart("username", new StringBody(userName)); post.setEntity(reqEntity); HttpResponse res = client.execute(post); HttpEntity resEntity = res.getEntity(); final String response_str = EntityUtils.toString(resEntity); if (resEntity != null) { Log.i(TAG, response_str); getActivity().runOnUiThread(new Runnable() { public void run() { try { dialogPrg.dismiss(); JSONObject jsonObj = new JSONObject( response_str); if (jsonObj.getString("ok").equals("0")) { // show error email; showDialog(getActivity().getResources() .getString(R.string.email_exist)); return; } if (jsonObj.getString("ok").equals("1")) { // show error username showDialog(getActivity() .getResources() .getString(R.string.user_name_exist)); return; } if (jsonObj.getString("ok").equals("2")) { // show unknow username showDialog(getActivity().getResources() .getString(R.string.login_failed)); return; } } catch (Exception e) { JSONArray jsonArray; try { jsonArray = new JSONArray(response_str); if (jsonArray.length() == 1) { JSONObject obj = jsonArray .getJSONObject(0); User user = Ultils.parseUser(obj); UserSessionManager userSession = new UserSessionManager( getActivity()); userSession.storeUserSession(user); Intent intent = new Intent( getActivity(), HomeActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); } } catch (JSONException e1) { // TODO Auto-generated catch block e1.printStackTrace(); showDialog(getActivity().getResources() .getString(R.string.login_failed)); } } } }); } } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } } // Needs to be changed @Override public void onResume() { super.onResume(); Session session = Session.getActiveSession(); if (session != null && (session.isOpened() || session.isClosed())) { onSessionStateChange(session, session.getState(), null); } // uiHelper.onResume(); } // Needs to be changed END @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); // New Facebook added callbackManager.onActivityResult(requestCode, resultCode, data); //New Facebook added END // uiHelper.onActivityResult(requestCode, resultCode, data); // Needs to be changed if (Session.getActiveSession() != null && Session.getActiveSession().isOpened()) { dialogPrg.setMessage(getActivity().getResources().getString( R.string.loging)); dialogPrg.show(); facebookLoginButton.setEnabled(false); insertUser(Session.getActiveSession()); } } // Needs to be changed END @Override public void onPause() { super.onPause(); // uiHelper.onPause(); } @Override public void onDestroy() { super.onDestroy(); // uiHelper.onDestroy(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); // uiHelper.onSaveInstanceState(outState); } public void showDialog(String message) { Ultils.logout(getActivity()); AlertDialog.Builder buidler = new AlertDialog.Builder(getActivity()); buidler.setMessage(message); buidler.setPositiveButton( getActivity().getResources().getString(R.string.ok_label), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method // stub facebookLoginButton.setEnabled(true); } }); AlertDialog dialog = buidler.create(); dialog.show(); } } 

Answer 1

Use this Snippet for facebook login. Works like a charm in my app.

 import java.util.Arrays; import java.util.Date; import java.util.List; import com.facebook.AppEventsLogger; import com.facebook.FacebookAuthorizationException; import com.facebook.FacebookOperationCanceledException; import com.facebook.FacebookRequestError; import com.facebook.Request; import com.facebook.Response; import com.facebook.Session; import com.facebook.SessionState; import com.facebook.UiLifecycleHelper; import com.facebook.model.GraphObject; import com.facebook.model.GraphPlace; import com.facebook.model.GraphUser; import com.facebook.widget.FacebookDialog; import com.facebook.widget.LoginButton; import com.facebook.widget.ProfilePictureView; import com.ids.service.R; import android.support.v4.app.FragmentActivity; import android.app.AlertDialog; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.util.Log; public class MainActivity extends FragmentActivity { private final String PENDING_ACTION_BUNDLE_KEY = "com.facebook.samples.hellofacebook:PendingAction"; private LoginButton loginButton; private ProfilePictureView profilePictureView; private PendingAction pendingAction = PendingAction.NONE; private GraphUser user; private GraphPlace place; private List<GraphUser> tags; private boolean canPresentShareDialog; private boolean canPresentShareDialogWithPhotos; private enum PendingAction { NONE, POST_PHOTO, 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("Facebook", String.format("Error: %s", error.toString())); } @Override public void onComplete(FacebookDialog.PendingCall pendingCall, Bundle data) { Log.d("Facebook", "Success!"); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); uiHelper = new UiLifecycleHelper(this, callback); uiHelper.onCreate(savedInstanceState); if (savedInstanceState != null) { String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY); pendingAction = PendingAction.valueOf(name); } setContentView(R.layout.activity_main); profilePictureView = (ProfilePictureView) findViewById(R.id.profilePicture); 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(); } }); } @Override protected void onResume() { super.onResume(); uiHelper.onResume(); // Call the 'activateApp' method to log an app event for use in analytics and advertising reporting. Do so in // the onResume methods of the primary Activities that an app may be launched into. AppEventsLogger.activateApp(this); 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(); // Call the 'deactivateApp' method to log an app event for use in analytics and advertising // reporting. Do so in the onPause methods of the primary Activities that an app may be launched into. AppEventsLogger.deactivateApp(this); } @Override public void onDestroy() { super.onDestroy(); uiHelper.onDestroy(); } private void onSessionStateChange(Session session, SessionState state, Exception exception) { if (pendingAction != PendingAction.NONE && (exception instanceof FacebookOperationCanceledException || exception instanceof FacebookAuthorizationException)) { new AlertDialog.Builder(MainActivity.this) .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(); } @SuppressWarnings("unused") private void updateUI() { Session session = Session.getActiveSession(); if (user != null) { profilePictureView.setProfileId(user.getId()); Log.e("Name", user.getName()); } } @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_PHOTO: postPhoto(); break; 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(); } private FacebookDialog.ShareDialogBuilder createShareDialogBuilderForLink() { return new FacebookDialog.ShareDialogBuilder(this) .setName("Hello Facebook") .setDescription("The 'Hello Facebook' sample application showcases simple Facebook integration") .setLink("http://developers.facebook.com/android"); } 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; } } private FacebookDialog.PhotoShareDialogBuilder createShareDialogBuilderForPhoto(Bitmap... photos) { return new FacebookDialog.PhotoShareDialogBuilder(this) .addPhotos(Arrays.asList(photos)); } private void postPhoto() { Bitmap image = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_launcher); if (canPresentShareDialogWithPhotos) { FacebookDialog shareDialog = createShareDialogBuilderForPhoto(image).build(); uiHelper.trackPendingDialogCall(shareDialog.present()); } else if (hasPublishPermission()) { Request request = Request.newUploadPhotoRequest(Session.getActiveSession(), image, new Request.Callback() { @Override public void onCompleted(Response response) { showPublishResult(getString(R.string.photo_post), response.getGraphObject(), response.getError()); } }); request.executeAsync(); } else { pendingAction = PendingAction.POST_PHOTO; } } private boolean hasPublishPermission() { Session session = Session.getActiveSession(); return session != null && session.getPermissions().contains("publish_actions"); } } 

Answer 2

As you can read in the Facebook SDK for Android changelog in section 4.0 - March 25, 2015 the UiLifecycleHelper was removed and its functionality transferred to the CallbackManager.

Here is a tutorial which explains how to implement the login with facebook SDK 4.0.