Autocomplete textview with oval shape corners

I want to create the shape of autocomplete textview shown in the figure and text should come in center of it.

Currently I am trying to implement it as

<item>
    <shape android:shape="rectangle" >
        <corners android:radius="15dip" />

        <solid android:color="@color/blue_text" />

        <padding
            android:bottom="5dip"
            android:left="15dip"
            android:right="15dip"
            android:top="5dip" />
    </shape>
</item>

<AutoCompleteTextView
  android:id="@+id/autoComp"
  android:layout_width="wrap_content"
  android:layout_height="match_parent"
  android:gravity="center"
  android:background="@drawable/bg_autocompletetext"
  android:textColor="@color/white"
</AutoCompleteTextView>

But it would just make the corners of the textview round. It does make it completely round. Please specify any solution for it.