Elevation is not working in PopupWindow Android

Question

I am using PopupWindow in my android app and its working fine. But I have to add elevation to it but its not working. Here is how I am doing it

View to show in popup window popup_view_order_status

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/white"
    android:layout_margin="@dimen/margin_xlarge"
    android:elevation="@dimen/margin_large"
    android:padding="@dimen/margin_large">


    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="@dimen/text_large"
        android:textColor="@color/dark_gray"
        android:textStyle="bold"
        android:text="@string/lbl_order_status" />

    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <RadioButton
            android:id="@+id/rbAccepted"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layoutDirection="rtl"
            android:textAlignment="textStart"
            android:layout_gravity="start"
            android:minHeight="@dimen/text_xxlarge_m"
            android:text="@string/lbl_accepted"
            android:textSize="@dimen/text_large"
            android:onClick="onRadioButtonClicked"/>

        <RadioButton
            android:id="@+id/rbRejected"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layoutDirection="rtl"
            android:textAlignment="textStart"
            android:layout_gravity="start"
            android:minHeight="@dimen/text_xxlarge_m"
            android:text="@string/lbl_rejected"
            android:textSize="@dimen/text_large"
            android:onClick="onRadioButtonClicked"/>

        <RadioButton
            android:id="@+id/rbOutForDelivery"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layoutDirection="rtl"
            android:textAlignment="textStart"
            android:layout_gravity="start"
            android:minHeight="@dimen/text_xxlarge_m"
            android:text="@string/lbl_out_for_delivery"
            android:textSize="@dimen/text_large"
            android:onClick="onRadioButtonClicked"/>

        <RadioButton
            android:visibility="gone"
            android:id="@+id/rbReadyForPickup"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layoutDirection="rtl"
            android:textAlignment="textStart"
            android:layout_gravity="start"
            android:minHeight="@dimen/text_xxlarge_m"
            android:text="@string/lbl_ready_for_pickup"
            android:textSize="@dimen/text_large"
            android:onClick="onRadioButtonClicked"/>


        <RadioButton
            android:id="@+id/rbCompleted"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layoutDirection="rtl"
            android:textAlignment="textStart"
            android:layout_gravity="start"
            android:minHeight="@dimen/text_xxlarge_m"
            android:text="@string/lbl_completed"
            android:textSize="@dimen/text_large"
            android:onClick="onRadioButtonClicked"/>

    </RadioGroup>
</LinearLayout>

Here is how I am setting it up in activity

    val inflater = getSystemService(LAYOUT_INFLATER_SERVICE) as LayoutInflater
    val popupView: View = inflater.inflate(R.layout.popup_view_order_status, null)
    val width = LinearLayout.LayoutParams.WRAP_CONTENT
    val height = LinearLayout.LayoutParams.WRAP_CONTENT
    val focusable = true // lets taps outside the popup also dismiss it
    val popupWindow = PopupWindow(popupView, width, height, focusable)
    popupWindow.showAtLocation(binding.btnOrderStatusChange, Gravity.RIGHT, 50, -binding.btnOrderStatusChange.measuredHeight / 2)
    popupWindow.setBackgroundDrawable(ColorDrawable(Color.WHITE))
    popupWindow.elevation = 120F

Answer 1

I would try following:

1. Use CardView as your content root View, it has cardElevation attribute for customizing shadow.

• Keep in mind that in order to make the CardView shadow visible, you must add some margin to it, and to make the margin visible, you have to add one more View to wrap the CardView, you can use LinearLayout or FrameLayout.

3. Call popupWindow.setBackgroundDrawable(null) to remove built-in background.

Demo: https://www.youtube.com/watch?v=rlWX4kIDI6Q