New functionality in the framework and support libs allow exactly this. There are three 'pieces of the puzzle':
- Using Toolbar so that you can embed your action bar into your view hierarchy.
- Making DrawerLayout
fitSystemWindows
so that it is layed out behind the system bars. - Disabling
Theme.Material
's normal status bar coloring so that DrawerLayout can draw there instead.
I'll assume that you will use the new appcompat.
First, your layout should look like this:
<!-- The important thing to note here is the added fitSystemWindows -->
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/my_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!-- Your normal content view -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- We use a Toolbar so that our drawer can be displayed
in front of the action bar -->
<android.support.v7.widget.Toolbar
android:id="@+id/my_awesome_toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
<!-- The rest of your content view -->
</LinearLayout>
<!-- Your drawer view. This can be any view, LinearLayout
is just an example. As we have set fitSystemWindows=true
this will be displayed under the status bar. -->
<LinearLayout
android:layout_width="304dp"
android:layout_height="match_parent"
android:layout_gravity="left|start"
android:fitsSystemWindows="true">
<!-- Your drawer content -->
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
Then in your Activity/Fragment:
public void onCreate(Bundled savedInstanceState) {
super.onCreate(savedInstanceState);
// Your normal setup. Blah blah ...
// As we're using a Toolbar, we should retrieve it and set it
// to be our ActionBar
Toolbar toolbar = (...) findViewById(R.id.my_awesome_toolbar);
setSupportActionBar(toolbar);
// Now retrieve the DrawerLayout so that we can set the status bar color.
// This only takes effect on Lollipop, or when using translucentStatusBar
// on KitKat.
DrawerLayout drawerLayout = (...) findViewById(R.id.my_drawer_layout);
drawerLayout.setStatusBarBackgroundColor(yourChosenColor);
}
Then you need to make sure that the DrawerLayout is visible behind the status bar. You do that by changing your values-v21 theme:
values-v21/themes.xml
<style name="Theme.MyApp" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">@android:color/transparent</item>
</style>