Add background xml examples

app/src/main/res/drawable/rectangle_rounded_green.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+    <solid
+        android:color="@color/green"/>
+
+    <corners
+        android:radius="8dp" />
+
+    <size
+        android:width="32dp"
+        android:height="32dp"/>
+
+</shape>

app/src/main/res/drawable/rectangle_rounded_green_ripple.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+	android:color="?android:attr/colorControlHighlight">
+	<item android:id="@android:id/mask">
+		<shape android:shape="rectangle">
+			<solid android:color="#000000" />
+			<corners android:radius="8dp" />
+			<size
+				android:width="32dp"
+				android:height="32dp" />
+		</shape>
+	</item>
+	<item android:drawable="@drawable/rectangle_rounded_green" />
+</ripple>