ResultActivity

package com.imaadv.rist_management;

import android.os.PersistableBundle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Gravity;
import android.view.MenuItem;
import android.view.View;

import java.util.ArrayList;

import android.support.v7.app.ActionBarDrawerToggle;
import android.util.Log;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import com.imaadv.rist_management.adapter.NavDrawerListAdapter;

import com.imaadv.rist_management.fragments.AboutusFragment;
import com.imaadv.rist_management.fragments.Home_fragment;
import com.imaadv.rist_management.fragments.ReferenceFragment;

import com.imaadv.rist_management.model.NavDrawerItem;


public class ResultActivity extends ActionBarActivity implements AdapterView.OnItemClickListener {


    MyApplication myApplication;
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    // nav drawer title
    private CharSequence mDrawerTitle;

    // used to store app title
    private CharSequence mTitle;

    // slide menu items
    private String[] navMenuTitles;

    private ArrayList<NavDrawerItem> navDrawerItems;
    private NavDrawerListAdapter adapter;

    Toolbar toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_result);
        toolbar = (Toolbar) findViewById(R.id.toolbar);

        myApplication = (MyApplication) getApplication();

        setSupportActionBar(toolbar);
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // load slide menu items
        navMenuTitles = getResources().getStringArray(R.array.nav_items);


        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.list_slidermenu);

        navDrawerItems = new ArrayList<NavDrawerItem>();

        // adding nav drawer items to array

        navDrawerItems.add(new NavDrawerItem(navMenuTitles[0]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[1]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[2]));
        navDrawerItems.add(new NavDrawerItem(navMenuTitles[3]));
        toolbar.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mDrawerLayout.isDrawerOpen(GravityCompat.START)){
                    mDrawerLayout.closeDrawers();
                }else{
                    mDrawerLayout.openDrawer(GravityCompat.START);
                }
            }
        });



        mDrawerList.setOnItemClickListener(this);

        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(this, navDrawerItems);
        mDrawerList.setAdapter(adapter);


        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                toolbar, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
        ) {
            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
            }

            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);
        mDrawerToggle.setDrawerIndicatorEnabled(true);


        if (savedInstanceState == null) {
            // on first time display view for first nav item
            displayView(0);
        }
    }

    @Override
    public void onPostCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
        super.onPostCreate(savedInstanceState, persistentState);
        mDrawerToggle.syncState();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title

        // Handle action bar actions click
        switch (item.getItemId()) {
            case R.id.action_settings:
                return true;



            default:
                return super.onOptionsItemSelected(item);
        }
    }


    /**
     * Diplaying fragment view for selected nav drawer list item
     */
    private void displayView(int position) {
        // update the main content by replacing fragments
        android.support.v4.app.Fragment fragment = null;
        switch (position) {
            case 0:
                fragment = new Home_fragment();
                break;
            case 1:
                fragment = new AboutusFragment();
                break;
            case 2:
                fragment = new ReferenceFragment();
                break;

            case 3:
                myApplication.rest_test(getBaseContext());
                break;

            default:
                break;
        }

        if (fragment != null) {
            android.support.v4.app.FragmentManager fragmentManager = getSupportFragmentManager();
            fragmentManager.beginTransaction()
                    .replace(R.id.frame_container, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            mDrawerList.setSelection(position);
            setTitle(navMenuTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
        } else {
            // error in creating fragment
            Log.e("MainActivity", "Error in creating fragment");
        }
    }


    /**
     * When using the ActionBarDrawerToggle, you must call it during
     * onPostCreate() and onConfigurationChanged()...
     */

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }


    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
        displayView(position);
    }
}