How to bring imageView in front of cardview ? When both are of Relative Layout childs

Question

I have a layout XML:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/containor"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#fff6da"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.vats.vatishs.cardviewprogrammatically.MainActivity">

        <FrameLayout
            android:id="@+id/card"
            android:layout_width="220dp"
            android:layout_marginTop="10dp"
            android:layout_height="wrap_content">

            <TextView
                android:background="@color/white"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:padding="10dp"
                android:text="Hello I am a text View." />

        </FrameLayout>

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="210dp"
        android:background="@drawable/select_delete_chim" />

</RelativeLayout>

which works fine. The result will be a image view above frame layout but when I use the following xml in which i have replace frame layout with CardView:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/containor"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#fff6da"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.vats.vatishs.cardviewprogrammatically.MainActivity">

        <android.support.v7.widget.CardView
            android:id="@+id/card"
            android:layout_width="220dp"
            android:layout_marginTop="10dp"
            android:layout_height="wrap_content">

            <TextView
                android:background="@color/white"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:padding="10dp"
                android:text="Hello I am a text View." />

        </android.support.v7.widget.CardView>

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="210dp"
        android:background="@drawable/select_delete_chim" />
</RelativeLayout>

then the result will be: ImageView at the back of CardView.

Any Solution for this?

One thing more, It will work fine on pre-lollipop devices but on lollipop it doesn't work.

Output with CardView on pre-lollipop devices (required output)

Output with CardView on lollipop devices

Answer 1

CardView has default elevation which is greater than ImageView, So we have to add greater elevation in ImageView than CardView's elevation.

e.g. imageView.setElevation(10); and cardView.setElevation(5);

Now, its working fine on all devices.