How to get the timezone offset in GMT(Like GMT+7:00) from android device?

Question

I am getting the timezone of a android device using this code

TimeZone tz = TimeZone.getDefault(); String current_Time_Zone = (TimeZone.getTimeZone(tz.getID()).getDisplayName(                 false, TimeZone.SHORT)) 

But it always return me the timezone like "IST" but i want to get the timezone in GMT like this GMT+7:00.

Answer 1

This might give you an idea on how to implement it to your liking:

Calendar mCalendar = new GregorianCalendar();   TimeZone mTimeZone = mCalendar.getTimeZone();   int mGMTOffset = mTimeZone.getRawOffset();   System.out.printf("GMT offset is %s hours", TimeUnit.HOURS.convert(mGMTOffset, TimeUnit.MILLISECONDS));  

(TimeUnit is "java.util.concurrent.TimeUnit")

Answer 2

This code return me GMT offset.

Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT"),                 Locale.getDefault()); Date currentLocalTime = calendar.getTime(); DateFormat date = new SimpleDateFormat("Z"); String localTime = date.format(currentLocalTime); 

It returns the time zone offset like this: +0530

If we use SimpleDateFormat below

DateFormat date = new SimpleDateFormat("z",Locale.getDefault()); String localTime = date.format(currentLocalTime); 

It returns the time zone offset like this: GMT+05:30