Navigation drawer lags when opening and closing android
<p>I am at trying to to get my navigation drawer to run smoothly as there is a stutter/delay in transition when opening and closing the drawer. I would like this to run perfectly. Any help?</p>

<pre><code>public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {


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

        final MediaPlayer mp = MediaPlayer.create(this, R.raw.firsteps);
        mp.start();


        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setItemIconTintList(null);
        navigationView.setNavigationItemSelectedListener(this);


        FragmentManager fm = getSupportFragmentManager();
        fm.beginTransaction().replace(R.id.content_frame, new MainFragment()).commit();

    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.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 id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            startActivity(new Intent(getApplicationContext(),Testing.class));
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {

        //final MediaPlayer mp = MediaPlayer.create(this, R.raw.xlophone);

        FragmentManager fm = getSupportFragmentManager();

        int id = item.getItemId();

        if (id == R.id.car_stories) {

            fm.beginTransaction().replace(R.id.content_frame,new ChildrensList()).commit();
            //mp.start();
        } else if (id == R.id.car_places) {

            fm.beginTransaction().replace(R.id.content_frame,new ImportFragment()).commit();
            //mp.start();

        } else if (id == R.id.nav_slideshow) {

        } else if (id == R.id.nav_manage) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}
</code></pre>