This tutorial assumes that you already have an activity and are using an XML layout.Open the layout XML and add the button element.  Assign an ID with the “@+id” operator.  The + tells Android to generate an ID for this element so that you can reference it in your Java files.This is an example. Your layout and text elements will probably be very different. In this example case, the ID of the button is “close”.<Button android:id="@+id/close" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="tru...