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title: Android Toolbar: The ActionBar replacement tags: android,android-toolbar

The old Actionbar was inflexible. So google created the aptly named Toolbar.

To use it, you need to disable the old Actionbar and window title in your styles.xml entries:

<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>

Then your layout.xml should look something like this, with the height being the device's default and the background your preset primary colour, if you're using a plain LinearLayout for example:

<LinearLayout
    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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
  <android.support.v7.widget.Toolbar
      android:id="@+id/toolbar"
      android:layout_width="match_parent"
      android:layout_height="?attr/actionBarSize"
      android:background="@color/colorPrimary"
      >
  </android.support.v7.widget.Toolbar>
</LinearLayout>

You can also use the popupTheme attribute of the Toolbar to style the items that popup in the menu on the right.

Now the code for the initialisation in onCreate is simple enough, ensuring your Activity extends the right class, AppCompatActivity in my case:

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