getDatum method
Subclasses should implement this method to collect a Datum
.
Can return null
if no data is available.
Can return an ErrorDatum
if an error occurs.
Implementation
Future<Datum> getDatum() async {
MarkedMeasure m = (measure as MarkedMeasure);
int from = (m.lastTime != null)
? m.lastTime!.millisecondsSinceEpoch
: DateTime.now().subtract(m.history).millisecondsSinceEpoch;
int now = DateTime.now().millisecondsSinceEpoch;
Iterable<CallLogEntry> entries =
await CallLog.query(dateFrom: from, dateTo: now);
return PhoneLogDatum()
..phoneLog =
entries.map((call) => PhoneCall.fromCallLogEntry(call)).toList();
}