Question

As you can see from the screenshot below, the “titlebar” is getting these ugly banding lines across the areas with text that extend the entire width of the screen. It’s even more noticeable on a real device.

Is there any way to work around this?

Answer 1

From Android Developers: Widget Design Guidelines:

In some cases, devices have low pixel
depths that can cause visual banding
and dithering issues. To solve this,
application developers should pass
assets through a “proxy” drawable
defined as XML:. This technique
references the original artwork, in
this case “background.9.png”, and
instructs the device to dither it as
needed.

EDIT:
Example source. This is an xml file in your res/drawables directory:

<?xml version="1.0" encoding="UTF-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@drawable/title_bar_medium"
    android:dither="true" />