protected static String getTzId(DateProperty date) {
if (date.isUtc() || !hasTime(date)) return Time.TIMEZONE_UTC;
else if (date.getTimeZone() != null) return date.getTimeZone().getID();
else if (date.getParameter(Value.TZID) != null) return date.getParameter(Value.TZID).getValue();
// fallback
return Time.TIMEZONE_UTC;
}
/* guess matching Android timezone ID */
protected static void validateTimeZone(DateProperty date) {
if (date.isUtc() || !hasTime(date)) return;
String tzID = getTzId(date);
if (tzID == null) return;
String localTZ = Time.TIMEZONE_UTC;
String availableTZs[] = SimpleTimeZone.getAvailableIDs();
for (String availableTZ : availableTZs)
if (tzID.indexOf(availableTZ, 0) != -1) {
localTZ = availableTZ;
break;
}
Log.d(TAG, "Assuming time zone " + localTZ + " for " + tzID);
date.setTimeZone(tzRegistry.getTimeZone(localTZ));
}
protected static boolean hasTime(DateProperty date) {
return date.getDate() instanceof DateTime;
}