private String getRoundedTimeString(Calendar time) { // quadrant bestimmen // aggregated recorded hour aus erstem und letztem element des intervalles bilden mit gerundeten // zeiten // TODO: SB this is only the simple version... int hours = time.get(Calendar.HOUR_OF_DAY); int minutes = time.get(Calendar.MINUTE); if (minutes <= 7) { minutes = 0; } else if (minutes > 7 && minutes <= 22) { minutes = 15; } else if (minutes > 22 && minutes <= 37) { minutes = 30; } else if (minutes > 37 && minutes <= 52) { minutes = 45; } else { hours++; minutes = 0; } time.set(Calendar.HOUR, hours); time.set(Calendar.MINUTE, minutes); return DateUtil.convertCalendarToGermanTime(time); }