How to show the time and date saved in my database to the user according to their local timezone? Please see details

问题

I'm developing an app in which I'm saving the date and time in Firebase and then retrieving it for the user to see.

What I want is I want user to see that time and date according to their local timezone. for ex - if the time and date saved in database is '2:07 PM' and 'Fri, Jun 24', then to the users in PST timezone, it should be shown as '1:37 AM' and 'Fri, Jun 24'.

Here's how I'm getting time and date:

        DateFormat currentTime = new SimpleDateFormat("h:mm a");
        final String time = currentTime.format(Calendar.getInstance().getTime());

        DateFormat currentDate = new SimpleDateFormat("EEE, MMM d");
        final String date = currentDate.format(Calendar.getInstance().getTime());

How can I achieve this?

Please let me know.

回答1:

Try this:

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
simpleDateFormat.setTimeZone(TimeZone.getDefault());
Date myDate = simpleDateFormat.parse("DateAndTimeToBeProcessed");

来源：https://stackoverflow.com/questions/38009126/how-to-show-the-time-and-date-saved-in-my-database-to-the-user-according-to-thei