android - How to make AppCompatSpinner more visible to the user? -

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i'm using android.support.v7.widget.appcompatspinner. problem down arrow triangle shape small. there no background default color set spinner either. though user can hardly know there spinner on page cause pretty looks simple text view. arrow size cannot changed , become bigger. when try put background small arrow totally goes away! supposed do? found no related guide in material design documents.

thanks lot in advance.

here material design spinner:

<android.support.v7.widget.appcompatspinner                 android:entries="@array/contract_type_array"                 android:id="@+id/spinner"                 style="@style/styleforsimplespinnermedium"                 android:background="@color/color5"                 />      <style name="styleforsimplespinnermedium">     <item name="android:padding">30dp</item>     <item name="android:paddingend">10dp</item>     <item name="android:scrollhorizontally">false</item>     <item name="android:layout_height">match_parent</item>     <item name="android:layout_width">wrap_content</item>     <item name="android:dropdownselector">@android:drawable/list_selector_background</item>     <item name="android:divider">@null</item> </style>


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