Android - Remove Spinner Dropdown Arrow

Question

I'm just wondering if it's at all possible to simply remove the dropdown arrow for a spinner? I have a drawable arrow in a backgroud layout for my spinner, however the system default arrow appears to the right of the spinner, which I would like to get rid of.

Here is the spinner xml code for my activity layout

<Spinner
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/spinnerSelectStaff"
            android:layout_gravity="center_horizontal"
            android:layout_marginLeft="18dp"
            android:layout_marginRight="18dp"
            android:gravity="center"
            android:dropDownSelector="@drawable/empty"/>

And my custom spinner layout looks like this:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@android:id/text1"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_margin="5dp"
          android:gravity="center"
          android:textSize="20sp"
          android:background="@drawable/spinner_text_shape"
          android:drawableRight="@drawable/ic_keyboard_arrow_down_black_24dp"
          android:textColor="@color/primary_text" />

Thanks!

Answer 1

Background @null in the layout xml file also does the trick, if you don't want to declare a specific style:

        <Spinner
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@null"/>