[Merche300]

Muchisimas gacias a los dos, conseguido y aprendido.

txtHoraInicio.setText(hourOfDay + ":" +
                                    (minute >= 10 ? String.valueOf(minute) : "0"+minute))

txtHoraFin.setText(hourOfDay + ":" +
                                    (minute >= 10 ? String.valueOf(minute) : "0"+minute));