dependencies {
  ...
  compile "com.android.support:appcompat-v7:18.0.+"
}

<application
  android:theme="@style/Theme.AppCompat.Light.NoActionBar"
  />

<android.support.v7.widget.Toolbar
  android:id="@+id/my_toolbar"
  android:layout_width="match_parent"
  android:layout_height="?attr/actionBarSize"
  android:background="?attr/colorPrimary"
  android:elevation="4dp"
  android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
  app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_my);
  Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
  setSupportActionBar(myToolbar);
  }

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

  <!-- "Mark Favorite", should appear as action button if possible -->
  <item
    android:id="@+id/action_favorite"
    android:icon="@drawable/ic_favorite_black_48dp"
    android:title="@string/action_favorite"
    app:showAsAction="ifRoom"/>

  <!-- Settings, should always be in the overflow -->
  <item android:id="@+id/action_settings"
     android:title="@string/action_settings"
     app:showAsAction="never"/>

</menu>

@Override
public boolean onOptionsItemSelected(MenuItem item) {
  switch (item.getItemId()) {
    case R.id.action_settings:
      // User chose the "Settings" item, show the app settings UI...
      return true;

    case R.id.action_favorite:
      // User chose the "Favorite" action, mark the current item
      // as a favorite...
      return true;

    default:
      // If we got here, the user's action was not recognized.
      // Invoke the superclass to handle it.
      return super.onOptionsItemSelected(item);

  }
}

<application ... >
  ...

  <!-- The main/home activity (it has no parent activity) -->

  <activity
    android:name="com.example.myfirstapp.MainActivity" ...>
    ...
  </activity>

  <!-- A child of the main activity -->
  <activity
    android:name="com.example.myfirstapp.MyChildActivity"
    android:label="@string/title_activity_child"
    android:parentActivityName="com.example.myfirstapp.MainActivity" >

    <!-- Parent activity meta-data to support 4.0 and lower -->
    <meta-data
      android:name="android.support.PARENT_ACTIVITY"
      android:value="com.example.myfirstapp.MainActivity" />
  </activity>
</application>

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_my_child);

  // my_child_toolbar is defined in the layout file
  Toolbar myChildToolbar =
    (Toolbar) findViewById(R.id.my_child_toolbar);
  setSupportActionBar(myChildToolbar);

  // Get a support ActionBar corresponding to this toolbar
  ActionBar ab = getSupportActionBar();

  // Enable the Up button
  ab.setDisplayHomeAsUpEnabled(true);
}

<item android:id="@+id/action_search"
   android:title="@string/action_search"
   android:icon="@drawable/ic_search"
   app:showAsAction="ifRoom|collapseActionView"
   app:actionViewClass="android.support.v7.widget.SearchView" />

@Override
public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.main_activity_actions, menu);

  MenuItem searchItem = menu.findItem(R.id.action_search);
  SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);

  // Configure the search info and add any event listeners...

  return super.onCreateOptionsMenu(menu);6 
}