frame_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    >
    
    <View
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:background="@color/blue"
        android:layout_gravity="center"
        >
    </View>

    <View
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:background="@color/red"
        android:layout_gravity="center"
        >
    </View>

    <View
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:background="@color/green"
        android:layout_gravity="center"
        >
    </View>

</FrameLayout>