[Android] How to set spinner list item width to spinner width

 

set spinner background to null

 

		<Spinner
                                android:layout_width="match_parent"
                                android:layout_height="50dp"
                                android:background="@null"
                                android:overlapAnchor="false"
                                android:dropDownWidth="match_parent"
                                android:popupElevation="0.1dp"
                                android:popupBackground="@drawable/spinner_popup_background"
                                android:spinnerMode="dropdown" />