using tabs and fragments

package com.muzinda.kgwaindepi.ribbit;

import android.app.Activity;
import android.content.Intent;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import com.parse.Parse;
import com.parse.ParseAnalytics;
import com.parse.ParseObject;
import com.parse.ParseUser;


public class MainActivity extends FragmentActivity {
public  static  final  String TAG = MainActivity.class.getSimpleName();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ParseAnalytics.trackAppOpened(getIntent());

        ParseUser currentUser = ParseUser.getCurrentUser();
if(currentUser == null) {


    navigateToLogin();

}
        else {
    Log.i(TAG, currentUser.getUsername());
        }
        ParseObject object;
        // Enable Local Datastore.
        Parse.enableLocalDatastore(this);

        Parse.initialize(this, "jTxlNT63Iov1xTzImCOQiuAKfxDsVcjvbkPHwWvZ", "v7kKmfk2z23HWnVN2MGWsLovokYzLeHOK9vx09bD");


    }

    private void navigateToLogin() {
        Intent intent = new Intent(this, LoginActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
        startActivity(intent);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {




        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
       int itemId = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (itemId == R.id.action_logout) {
            ParseUser.logOut();
            navigateToLogin();

        }

        return super.onOptionsItemSelected(item);
    }
}