After I set action bar
to NAVIGATION_MODE_LIST
getActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
and then set an adapter for it.
The list show up as expected, but I need to change the 'little triangle' color of the list as the default color is very close to my background color.
Is it possible to do this, if so, how can I do it?
The little triangle you want to change is in the background of a Spinner
widget in ActionBar
. The background is a state list drawable. Items of the state list drawable are 9-patch drawables like this one (this particular one is the hdpi version for default state for Holo light theme):
To change the color of the triangle you have to change few sets of these 9-patch drawables - one drawable for each dpi and combination of states. You'll also need custom state list drawable to be as as the background of the Spinner
widget.
To change the widget background you have to adjust the theme. If you are using ActionBarSherlock (ABS) change actionDropDownStyle
item and for native ActionBar change android:actionDropDownStyle
item (even if you use ABS native ActionBar is used for devices running Android 4.0 and higher).
The theme should be something like:
<style name="MyTheme" parent="SomeParentStyle>
<item name="actionDropDownStyle">@style/MyActionBarSpinnerStyle</item><!-- if you use ABS -->
<item name="android:actionDropDownStyle">@style/MyActionBarSpinnerStyle</item>
</style>
And MyActionBarSpinnerStyle
should be something like:
<style name="MyActionBarSpinnerStyle" parent="@style/MyDropDownActionBarStyle">
<item name="android:background">@drawable/my_custom_state_list_drawable</item>
</style>
Where instead of MyDropDownActionBarStyle
there should be something like Widget.Sherlock.Light.Spinner.DropDown.ActionBar
if you use ABS or Widget.Holo.Light.Spinner.DropDown.ActionBar
if you target only native ActionBar.
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