basic4android and Olson TimeZone

[juanmpuertas]

Hello. I'm a recent user of basic4android, and my question is if is posible to access to the Olson timezone database.
For example, I have a city and a country from the Olson tz: "Madrid/Spain" and a date and time request: "1941-04-03 14:45" and Olson return: "GMT+01:00". It is this posible with basic4android?
Thanks

 

[juanmpuertas]

In a more profound search, I have found: TimeUtils | Android Developers
Now, I should to learn how to interact Basic4Android with the Android SDK

 

[NJDude]

Have you seen THIS?

 

[juanmpuertas]

Yes, but getTimeZone android's SDK takes country and time, and return the time zone. This function does not exist in Basic4Android
Thank-you for your help

 

[Mahares]

Have you taken a look at this link regarding Corwin42 (the genius Markus) AHlocale.
The AHTimeZone object provides methods to get information about timezones (like offset to UTC, DST offset etc.)
http://www.b4x.com/forum/additional...-updates/7561-ahlocale-library.html#post43067

 

[juanmpuertas]

It seems that AHLocale don't work properly. I try a example 120 days before now in Europe/Madrid, when DST is true and "Offset to UTC" should be 2 hours but the function return false and "1 hour".
Thank-you for your help :

Sub Activity_Create(FirstTime As Boolean)
   Dim tz As AHTimeZone
   Dim loc As AHLocale
   
   tz.Initialize
   loc.InitializeUS
   
   ' Get a list of all available timezones on the device
   Dim l As List
   l = tz.AvailableIds
   For i = 0 To l.Size - 1
      Log("TimeZoneID: " & l.Get(i))
   Next
   
   tz.Initzialize2("Europe/Madrid") ' <- My example *****
   Log("---")
   Log("Choosen TimezoneID: " & tz.ID)
   tz.ID ="Europe/Madrid"
   Log("TimeZone: " & tz.GetDisplayName(True, tz.STYLE_LONG))
   Log("TimeZone in english: " & tz.GetDisplayName2(True, tz.STYLE_LONG, loc))
   Log("Offset to UTC: " & (tz.getOffset(DateTime.Now-10368000) / DateTime.TicksPerHour) & " hours") ' <- We calculate 120 days before now, when is summer time and DST is true *****
   Log("Is it DST now? " & tz.InDaylightTime(DateTime.Now-10368000))
   
End Sub