The solution is :
Long tsLong = System.currentTimeMillis()/1000; String ts = tsLong.toString();
From developers blog:
System.currentTimeMillis() is the standard “wall” clock (time and date) expressing milliseconds since the epoch. The wall clock can be set by the user or the phone network (see setCurrentTimeMillis(long)), so the time may jump backwards or forwards unpredictably. This clock should only be used when correspondence with real-world dates and times is important, such as in a calendar or alarm clock application. Interval or elapsed time measurements should use a different clock. If you are using
System.currentTimeMillis(), consider listening to the
ACTION_TIMEZONE_CHANGED Intent broadcasts to find out when the time changes.
1320917972 is Unix timestamp using number of seconds since 00:00:00 UTC on January 1, 1970. You can use
TimeUnit class for unit conversion – from
System.currentTimeMillis() to seconds.
String timeStamp = String.valueOf(TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis()));