Integration of FaceBook third-party logon in Android

Integration of FaceBook third-party logon in Android

1. First, download the FaceBook SDK Android version;

2. Import FaceBookSDK to your project as Library

3. Register a test application on FaceBook

4. Configure AndroidManifest. xml:

Add the following to String:

 
  1548440642074664
 

5. Add the Facebook logon button:

6. Add code to the activity:

public class MainActivity extends Activity {private static final String TAG = "MainActivity";private UiLifecycleHelper uiHelper;private Session.StatusCallback callback = new Session.StatusCallback() {@Overridepublic void call(Session session, SessionState state,Exception exception) {onSessionStateChange(session, state, exception);}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);uiHelper = new UiLifecycleHelper(MainActivity.this, callback);uiHelper.onCreate(savedInstanceState);setContentView(R.layout.activity_main);LoginButton authButton = (LoginButton) findViewById(R.id.login_button);authButton.setReadPermissions(Arrays.asList("email","user_likes", "user_status"));}private void onSessionStateChange(Session session, SessionState state,Exception exception) {if (state.isOpened()) {Log.i(TAG, "Logged in...");} else if (state.isClosed()) {Log.i(TAG, "Logged out...");}}@Overridepublic void onResume() {super.onResume();// For scenarios where the main activity is launched and user// session is not null, the session state change notification// may not be triggered. Trigger it if it's open/closed.Session session = Session.getActiveSession();if (session != null && (session.isOpened() || session.isClosed())) {onSessionStateChange(session, session.getState(), null);}uiHelper.onResume();}@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);uiHelper.onActivityResult(requestCode, resultCode, data);}@Overridepublic void onPause() {super.onPause();uiHelper.onPause();}@Overridepublic void onDestroy() {super.onDestroy();uiHelper.onDestroy();}@Overridepublic void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);uiHelper.onSaveInstanceState(outState);}}

If you want to obtain basic user information:

private void getUserInfo() {  String fqlQuery = "SELECT uid,name,email FROM user WHERE uid = me()";          Bundle params = new Bundle();          params.putString("q", fqlQuery);          Request request = new Request(Session.getActiveSession(),              "/me",                                       params,                                       HttpMethod.GET,                               new Request.Callback(){                           public void onCompleted(Response response) {                      String str = response.toString();                  Log.i(TAG, str);                 }                            });           Request.executeBatchAsync(request);}