Android - How to force spinner dropdown to open right-aligned

Question

On an app that I am working on, I have a small spinner on the right hand side of the screen.

The problem is that on some devices the spinner dropdown opens right-aligned, while on others the spinner dropdown opens left-aligned, with the text coming off the screen.

I would like to know, is there a way to force the spinner dropdown to open right-aligned on all devices to prevent the text from coming off the screen?

EDIT: Here is the XML for the Spinner:

<Spinner
    android:layout_width="120dp"
    android:layout_height="wrap_content"
    android:id="@+id/reportList"
    android:layout_alignParentTop="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:layout_marginTop="25dp"/>

Answer 1

For resizing the Spinner's window this solution was propposed in a different question.

The question was asked in Spanish but see the answer of Jorgesys that uses reflection. Perhaps it puts you on the right path.