Principal screen:
When "Calculadora CB" is pressed:
When "Calcular divisas" is pressed:
When "Toggle button/switch" is pressed:
When "Persistencia de parametros" is pressed:
When "Login" is pressed: User: Alfredo Password: 123 *Select a blood type
When "Save" is pressed: this will save anything that you write in the editText When "Read" is pressed: this will read anything that you previously wrote in the editText
When a item from "spinner" is selected:
When "ListView" is pressed:
When "CardView" is pressed:
When "CardView//login" is pressed:
When "CardView//login//+" is pressed:
When "CardView//login//menu" is pressed:
When "CardView//registrarse" is pressed:
