Is using System Hungarian Notation for Android UI components (Views) valid? I mean using it ONLY for Views - no strSomething, boolStuff or similar names.
For example, tvDescription (TextView), editUsername or txtUsername (EditText), btnSubmit (Button), etc.
Especially with Buttons, because btnStartCountdown seems better than "startCountdown" - it sounds like a function minus(minus the parentheses), and it's difficult to know that it's a Button by its name alone.