As some developers who are reading this have probably coded UIs with Swing before here are some similarities between Android and Swing.
Activities in Android refers almost to a (J)Frame in Swing.
Views in Android refers to (J)Components in Swing.
TextViews in Android refers to a (J)Labels in Swing.
EditTexts in Android refers to a (J)TextFields in Swing.
Buttons in Android refers to a (J)Buttons in Swing.