android - Cities Daylight saving time database -

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i trying database cities , it's corresponding timezone including daylight saving time cannot find it.

i making ios , android application user can choose city or , represents time need data calculate right time.

my current solution use timezone.getavailableids() (id's same android) discovered there lot of cities missing such beijing , abu dhabi. solution?

here can 1 thing. set button in app , add below code in button's action. u can present date , time of location.and u can save information hitting api(webservice of app). -----------------------------------code----------------------------------

nsdateformatter *dateformatter = [[nsdateformatter alloc] init];  nstimezone *gmt = [nstimezone timezonewithabbreviation:@"gmt"]; [dateformatter settimezone:gmt]; [dateformatter setdateformat:@"yyyy-mm-dd't'hh:mm:ss.000'z'"];  nsstring *iso8601string = [dateformatter stringfromdate:self];

(nj)


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