I have set a dropdown icon for the spinner.I have used a custom layout for the spinner items.When it is run the drop down icon does not appear. activity_main.xml:
<Spinner
android:id="@+id/spinner1"
android:layout_width="200dp"
android:layout_height="70dp"
android:gravity="center"
style="@android:style/Widget.Spinner.DropDown"
android:background="@drawable/drop_down_style"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"/>
drop_down_style.xml:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape>
<solid android:color="@android:color/transparent" />
<padding
android:bottom="10dp"
android:left="2dp"
android:right="10dp"
android:top="10dp" />
</shape>
</item>
<item>
<bitmap
android:gravity="end"
android:src="@drawable/drop" />
</item>
</layer-list>
spinner_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="50dp"
android:background="@drawable/spinner_style" >
<TextView
android:id="@+id/item1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Aizwal"
android:padding="4dp"
android:textColor="#212121"
android:textSize="25sp" />
</FrameLayout>
