CustomDrawerActivity.java

package com.godoro.androidfragments;

import android.content.res.Configuration;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.os.Bundle;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.Toast;


public class CustomDrawerActivity extends AppCompatActivity {
    private final static String[] LIST_ITEMS={"C/C++","Java","C#","PHP","Python"};
    private DrawerLayout drawerLayout;
    private ListView drawerList;
    private ActionBarDrawerToggle drawerToggle;
    private CustomFragmentOne fragmentOne;
    private CustomFragmentTwo fragmentTwo;
    private CustomFragmentThree fragmentThree;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_drawer);
        fragmentOne = new CustomFragmentOne();
        fragmentTwo = new CustomFragmentTwo();
        fragmentThree = new CustomFragmentThree();
        showFragment(fragmentOne);
        drawerLayout=findViewById(R.id.drawerLayout);
        drawerList=findViewById(R.id.drawerList);
        ArrayAdapter<String> adapter=new ArrayAdapter<>(
                CustomDrawerActivity.this,
                R.layout.custom_drawer_item,LIST_ITEMS);
        drawerList.setAdapter(adapter);
        drawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
                drawerList.setItemChecked(position,true);
                drawerLayout.closeDrawer(drawerList);
                handleItem(position);
            }
        });
        drawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);


        drawerToggle = new ActionBarDrawerToggle(
                this,
                drawerLayout,
                R.string.drawerOpen,
                R.string.drawerClose  )
        {
            public void onDrawerClosed(View view) {
                getSupportActionBar().setTitle("Etkinlik");
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getSupportActionBar().setTitle("Çekmece");
                invalidateOptionsMenu();
            }
        };

    }
    private void handleItem(int position){

        setTitle(LIST_ITEMS[position]);
        Fragment currentFragment;
        switch (position){
            case 0 :
                showFragment(fragmentOne);
                break;
            case 1 :
                showFragment(fragmentTwo);
                break;
            case 2 :
                showFragment(fragmentThree);
                break;
            default:
                showFragment(fragmentOne);
                String message="Kotarılan orun "+position;
                Toast.makeText(getApplicationContext(),message,Toast.LENGTH_SHORT).show();
        }


    }
    private void showFragment(Fragment fragment){
        FragmentManager fragmentManager =  getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.contentFrame, fragment);
        fragmentTransaction.commit();
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (drawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        drawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        drawerToggle.onConfigurationChanged(newConfig);
    }

}