Android Navigation Drawer and windowActionBarOverlay = true

Question

I'm trying to implement the new Android Navigation Drawer in my application. I have created a BaseActivity.java that handles the Drawer setup and listeners, and I have two subactivities that extend this base class. On the second activity, I plan to use a different action bar style, using the following attrs:

<item name="android:windowActionBarOverlay">true</item> <item name="android:background">@android:color/transparent</item> 

to make the action bar transparent, and make content richer, as there is a picture header in my layout.

I've achieved just that, but now the problem is, that because the content is expanding to take advantage of the extra space of using the ActionBar as overlay, the Navigation Drawer itself is expanding too and it overlaps the ActionBar, creating a pretty awful looking layout:

What I'd like to have done, is the actual content (frame layout that will be populated with a fragment) to take up the extra space, but have the nav drawer still go underneath the action bar, similar to the Play Music App:

Any ideas on what I can do to make that happen?

EDIT So, as per Ahmad's assistance I set the marginTop on the ListView only. Here's the layout:

<!-- The navigation drawer --> <ListView android:id="@+id/left_drawer"           android:layout_marginTop="?android:attr/actionBarSize" <!-- This was added after seeing the crazy effect, but does nothing -->           android:layout_marginBottom="0dp"           android:layout_marginLeft="0dp"           android:layout_marginRight="0dp"           android:layout_width="240dp"           android:layout_height="fill_parent"           android:layout_gravity="start"           android:choiceMode="singleChoice"           android:background="?attr/listviewBackground"           /> 

And now, it works great for the top side, but for some reason there's also a margin at the bottom of the view, which doesn't make any sense to me at all. Here's a screenshot.

Not sure what's causing it :(

Answer 1

And now, it works great for the top side, but for some reason there's also a margin at the bottom of the view, which doesn't make any sense to me at all. Here's a screenshot.

If you set your ListView gravity to start|bottom it solves your problem. No additional margin is added at the bottom. Looks like the DrawerLayout default gravity is start|center

<ListView     android:id="@+id/left_drawer"     android:layout_marginTop="?android:attr/actionBarSize"     android:layout_width="240dp"     android:layout_height="match_parent"     android:layout_gravity="start|bottom"/> 

Answer 2

In case anyone is interested in another take to this question. Here's what happened.

I tried setting only the margin to the top of the list view like this:

android:layout_marginTop="?android:attr/actionBarSize" 

But as mentioned on the edited question, that had a weird behaviour where there was also a margin on the bottom despite not being set on the layout resource file.

So, I was looking closely at the Play Music App and noticed that it's not actually a margin, but rather some padding, and additionally they are using a custom background that fills the space specified by the padding with a transparent color.

Here's what I did:

• Set Padding at the top of the ListView, rather than margin:

  android:paddingTop="?android:attr/actionBarSize"

As said before, it's important to not hard code the dimensions as they vary per device.

• Create a custom drawable that has a top part transparent, and then rest of a solid color:

It looks somehow like this:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item>     <shape  android:shape="rectangle">         <solid android:color="#80000000" />     </shape> </item>  <item android:top="@dimen/action_bar_default_height">     <shape             android:shape="rectangle">         <solid android:color="@color/light_gray" />     </shape> </item> 

Note that I tried to use ?android:attr/actionBarSize on the drawable, but that made the app force close. Instead, I searched through grepcode and found a few dimen files with different sizes for the action bar, so I added those to my own project's dimen files.

• For values: 48dp
• For values-land: 40dp
• For values-sw600dp: 56dp

And after that, I think I looks great, notice on the screenshot how the listview and the actionbar don't overlap, and the transparent part of the listview is just the right size.

Hope that helps anyone who was wondering how to achieve this.