Create background of Popup Window with custom shape

Last example display "PopupWindow with transparent background". I want to have transparent background with visible border. This example create background with custom shape, have rounded border, semi-transparent background.

Popup Window with background of custom shape

Create /res/drawable/customborder.xml to define custom shape.

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle">
  <corners
      android:topLeftRadius="0dp"
      android:topRightRadius="30dp"
      android:bottomRightRadius="30dp"
      android:bottomLeftRadius="30dp" />
  <stroke
      android:width="3dp"
      android:color="@android:color/background_dark" />
  <solid 
      android:color="#800000c0"/>
</shape>

Modify /res/layout/popup.xml to define android:background="@drawable/customborder".

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/customborder"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="1dp"
        android:orientation="vertical" >
        
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="20dp"
            android:orientation="vertical" >

            <TextView
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="It's a PopupWindow" />

            <ImageView
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_launcher" />

            <Spinner
                android:id="@+id/popupspinner"
                android:spinnerMode="dialog"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" />

            <Button
                android:id="@+id/dismiss"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="Dismiss" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

Download the files.

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