Hi all I have discovered a problem with getting correct DST saving value, . TimeZone.getDSTSavings() normally returns 3600000 (1 hour), but should for timezone ID "Australia/Lord_Howe" return 1800000 (30 minutes). (See http://www.timeanddate.com/worldclock/clockchange.html?n=750)
I believe that GregorianCalendar uses TimeZone.getDSTSavings(), but that is only my guess from looking at the source at http://www.java2s.com/Open-Source/Android/android-core/platform-libcore/java/util/GregorianCalendar.java.htm Now, if I instead of using TimeZone.getDSTSavings() looks att what GregorianCalendar.get(Calendar.DST_OFFSET) returns, it is infact 1800000 when DST is on, which the following App reveals: package x.getdstavingsissue; /* * Result on Android 2.2 is: * TimeZone.getDSTSavings() == 3600000 * GregorianCalendar DST_OFFSET == 1800000 */ import java.util.Calendar; import java.util.TimeZone; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.TextView; public class GetDSTSavingsIssueActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Australia/Lord_Howe")); int getdstsavings = cal.getTimeZone().getDSTSavings(); cal.set(2012, 1, 1, 0, 0, 0); cal.set(Calendar.MILLISECOND, 0); int caldstsavings = cal.get(Calendar.DST_OFFSET); ((TextView) findViewById(R.id.getdstsavings)) .setText("TimeZone.getDSTSavings() == " + String.valueOf(getdstsavings)); ((TextView) findViewById(R.id.caldstsavings)) .setText("GregorianCalendar DST_OFFSET == " + String.valueOf(caldstsavings)); Log.d("GetDSTSavingsIssue", "TimeZone.getDSTSavings() == " + String.valueOf(getdstsavings)); Log.d("GetDSTSavingsIssue", "GregorianCalendar DST_OFFSET == " + String.valueOf(caldstsavings)); } } I tried running on 2.2 in emulator and on a device, and also on 3.2 in emulator. Same result. So, I wonder how this can be. Regards Jan -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
