how to implement facebook login in android using facebook sdk 4.7

Question

I am trying to login with facebook using android sdk 4.7. I have tried the following link http://www.theappguruz.com/blog/android-facebook-integration-tutorial http://www.an

Answer 1

1. First Go to https://developers.facebook.com/ ,Login and select My Apps and create a App.

2. Follow the given instruction on by one properly.

3. Give packagename and packagename.ActivityName, select use App name then save it.

4. Generate Hash Key (Download OpenSSL) and (Java JDK). - For windows!

5. Extract the OpenSSL stuffs to C:\OpenSSL

6. Go to CMD prompt set the current path to JDK's bin folder.

7. Then use this command :

keytool -exportcert -alias androiddebugkey -keystore "C:\Users\Shredder\.android\debug.keystore" | "C:\OpenSSL\bin\openssl" sha1 -binary | "C:\OpenSSL\bin\openssl" base64

Make sure you are using proper Paths like UserAccountName etc.Mine was shredder.After that use Password : 123456.

8. Paste the hashKey to the required field. Then follow along....

9. Use the following code if required.

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_sign__in);
       String fb_id ="";
       String fb_fName ="";
       String fb_lName ="";
       String fb_email ="";
       String EMAIL = "email";
   
       CallbackManager callbackManager = CallbackManager.Factory.create();
       final LoginButton loginButton = (LoginButton) findViewById(R.id.login_button);
       loginButton.setReadPermissions(Arrays.asList(EMAIL));
   
       loginButton.registerCallback(callbackManager, new FacebookCallback() {
           @Override
           public void onSuccess(LoginResult loginResult) {
   
               String userId = loginResult.getAccessToken().getUserId();
   
               GraphRequest graphRequest = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
                   @Override
                   public void onCompleted(JSONObject object, GraphResponse response) {
                       getUserFbUserInfo (object);
                   }
               });
   
               Bundle parameters = new Bundle();
               parameters.putString("fields", "first_name,last_name,email,id");
               graphRequest.setParameters(parameters);
               graphRequest.executeAsync();
   
   
               Intent it = new Intent(getApplicationContext(), Home_Page.class);
               it.putExtra("fbLogin", true);
               startActivity(it);
           }
   
           @Override
           public void onCancel() {
               // App code
           }
   
           @Override
           public void onError(FacebookException exception) {
               // App code
           }
       });
   
   
   }
   
   private void getUserFbUserInfo(JSONObject object) {
   
   
           try {
               fb_email = object.getString("email");
               fb_fName = object.getString("first_name");
               fb_lName = object.getString("last_name");
               fb_id = object.getString("id");
           } 
           catch (JSONException e) {
               e.printStackTrace(); 
           }   
   }
   
   @Override
   protected void onActivityResult ( int requestCode, int resultCode, Intent data){
       callbackManager.onActivityResult(requestCode, resultCode, data);
       super.onActivityResult(requestCode, resultCode, data);
   }
   

   }