Get milliseconds until midnight

Question

I\'m creating an Android widget that I want to update every night at midnight. I am using an AlarmManager and I need to find out how many milliseconds are left

Answer 1

Using the following way, there is no need to worry about setting DAY_OF_MONTH.

    long msInDay = 86400000;
    Calendar c = Calendar.getInstance();
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);

    System.out.print(msInDay - (System.currentTimeMillis() - c.getTimeInMillis()));