<android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|end"
            android:layout_margin="@dimen/fab_margin"
            android:src="@android:drawable/ic_dialog_email" />

 FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Ini FAB", Snackbar.LENGTH_LONG)
                        .setAction("Pencet", new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                Snackbar.make(v, "FAB KE 2",Snackbar.LENGTH_LONG).show();
                            }
                        }).show();
            }
        });

<LinearLayout
            android:layout_marginTop="?attr/actionBarSize"
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <TextView
                android:text="Material Design EditText"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textStyle="bold"
                style="@style/Base.TextAppearance.AppCompat.Title"
                android:layout_margin="20dp"/>

            <android.support.design.widget.TextInputLayout
                android:id="@+id/input_layout_email"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="20dp">
                <EditText
                    android:id="@+id/input_email"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint_email" />
            </android.support.design.widget.TextInputLayout>

            <android.support.design.widget.TextInputLayout
                android:id="@+id/input_layout_password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="20dp">
                <EditText
                    android:id="@+id/input_password"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint_password" />
            </android.support.design.widget.TextInputLayout>

            <Button
                android:id="@+id/btn_send"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/btn_send"
                android:layout_margin="20dp"/>

        </LinearLayout>

        TextInputLayout layoutEmail = (TextInputLayout) findViewById(R.id.input_layout_email);
        TextInputLayout layoutPassword = (TextInputLayout) findViewById(R.id.input_layout_password);
        EditText inputEmail = (EditText) findViewById(R.id.input_email);
        EditText inputPassword = (EditText) findViewById(R.id.input_password);
        Button btnSend = (Button) findViewById(R.id.btn_send);

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);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

        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.setNavigationItemSelectedListener(this);
    }

    @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) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_camera) {
            Toast.makeText(MainActivity.this, "ini " + item.getTitle() , Toast.LENGTH_SHORT).show();
        } else if (id == R.id.nav_gallery) {
            Toast.makeText(MainActivity.this, "ini " + item.getTitle() , Toast.LENGTH_SHORT).show();
        } else if (id == R.id.nav_slideshow) {
            Toast.makeText(MainActivity.this, "ini " + item.getTitle() , Toast.LENGTH_SHORT).show();
        } else if (id == R.id.nav_manage) {
            Toast.makeText(MainActivity.this, "ini " + item.getTitle() , Toast.LENGTH_SHORT).show();
        } else if (id == R.id.nav_share) {
            Toast.makeText(MainActivity.this, "ini " + item.getTitle() , Toast.LENGTH_SHORT).show();
        } else if (id == R.id.nav_send) {
            Toast.makeText(MainActivity.this, "ini " + item.getTitle() , Toast.LENGTH_SHORT).show();
        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}

Toolbar diperkenalkan sebagai fitur baru pada android 5 (lolipop),sebelumnya toolbar dikenal dengan actionbar. tentunya dengan bergantinya nama tersebut dibarengi dengan beberapa perubahan diantaranya toolbar dibuat pada file  tersendiri pada folder (app-src-main-res-layout) sehingga para developer dapat membuat beberapa toolbar untuk satu aplikasi. cara pemanggilanya tinggal include pada layout yang inggin kita pasang toolbar tersebut.

Berikut langkah-langkahnya :

compile 'com.android.support:appcompat-v7:21.0.3'

 <resources>

    <color name="primaryColor">#3f51b5</color>

    <color name="primaryColorDark">#303f9f</color>

</resources>

<resources>

    <!-- Base application theme. -->

    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

        <!-- Customize your theme here. -->

        <item name="colorPrimary">@color/primaryColor</item>

        <item name="colorPrimaryDark">@color/primaryColorDark</item>

        <item name="android:windowNoTitle">true</item>

    </style>

</resources>

<android.support.v7.widget.Toolbar

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:id="@+id/toolbar"

    android:layout_height="?actionBarSize"

    android:layout_width="match_parent"

    android:background="?attr/colorPrimary"/>

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">


    <include

        android:id="@+id/toolbar"

        layout="@layout/toolbar"/>

    <TextView

        android:text="@string/hello_world"

        android:layout_below="@+id/toolbar"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />

</RelativeLayout>

protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

        setSupportActionBar(toolbar);

    }

<menu

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    tools:context=".MainActivity">



    <item

        android:id="@+id/action_settings"

        android:title="@string/action_settings"

        android:orderInCategory="100"

        app:showAsAction="never" />


    <item

        android:id="@+id/action_search"

        android:title="@string/action_search"

        android:icon="@drawable/ic_action_search"

        android:orderInCategory="1"

        app:showAsAction="always"

        app:actionViewClass="android.support.v7.widget.SearchView"/>

</menu>

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;

    }