How To Remove The Spinner Border?

I want to remove the black border from these spinners Here is a screenshot PS: If I have missed to provide some vital information, please say so and I will enter here whatever nee

Solution 1:

try this:

<style name="AppTheme" parent="@android:style/Theme.Holo">
    <item name="android:dropDownListViewStyle">@style/MySpinnerStyle</item>
</style>

<style name="MySpinnerStyle" parent="android:style/Widget.ListView.DropDown">
    <item name="android:divider">#FFEEEEEE</item>
    <item name="android:dividerHeight">1dp</item>
</style>