Basically it can done in Two Steps:
Step1:
Setting the button background attribute to android:attr/selectableItemBackground creates you a button with feedback but no background. SO you need to write like this(In xml):
android:background="?android:attr/selectableItemBackground"
Step2:
The line to divide the borderless button from the rest of you layout is done by a view with the background android:attr/dividerVertical
android:background="?android:attr/dividerVertical"
Before applying logic your code will look like this in xml file:
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textStyle="bold"
android:layout_marginTop="10dp"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:gravity="left|center_vertical"
android:text="Button" />
<Button
android:id="@+id/btn_home"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textStyle="bold"
android:layout_marginTop="10dp"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:background="?android:attr/selectableItemBackground"
android:gravity="left|center_vertical"
android:text="Button" />
After applying above logic: