Android difference between Two Dates

Question

I have two date like   String date 1  yyyyMMddHHmmss   String date 2  yyyyMMddHHmmss     I want to print the difference like   2d 3h 45m   How can I do that  Thanks

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Here is the modern answer  It   s good for anyone who either uses Java 8 or later  which doesn   t go for most Android phones yet  or is happy with an external library       String date1    20170717141000       String date2    20170719175500        DateTimeFormatter formatter   DateTimeFormatter ofPattern  yyyyMMddHHmmss        Duration diff   Duration between LocalDateTime parse date1  formatter                                         LocalDateTime parse date2  formatter         if  diff isZero              System out println  0m          else           long days   diff toDays            if  days    0                System out print      days    d                 diff   diff minusDays days                     long hours   diff toHours            if  hours    0                System out print      hours    h                 diff   diff minusHours hours                     long minutes   diff toMinutes            if  minutes    0                System out print      minutes    m                 diff   diff minusMinutes minutes                     long seconds   diff getSeconds            if  seconds    0                System out print      seconds    s                       System out println            This prints  2d 3h 45m    In my own opinion the advantage is not so much that it is shorter  it   s not much   but leaving the calculations to an standard library is less errorprone and gives you clearer code  These are great advantages  The reader is not burdened with recognizing constants like 24  60 and 1000 and verifying that they are used correctly   I am using the modern Java date  amp  time API  described in JSR-310 and also known under this name   To use this on Android under API level 26  get the ThreeTenABP  see this question  How to use ThreeTenABP in Android Project  To use it with other Java 6 or 7  get ThreeTen Backport  With Java 8 and later it is built-in   With Java 9 it will be still a bit easier since the Duration class is extended with methods to give you the days part  hours part  minutes part and seconds part separately so you don   t need the subtractions  See an example in my answer here

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You can calculate the difference in time in miliseconds using this method and get the outputs in seconds  minutes  hours  days  months and years   You can download class from here  DateTimeDifference GitHub Link   Simple to use   long currentTime   System currentTimeMillis    long previousTime    System currentTimeMillis   - 864000000     10 days ago  Log d  DateTime      Difference With Second      AppUtility DateTimeDifference currentTime  previousTime  AppUtility TimeDifference SECOND    Log d  DateTime      Difference With Minute      AppUtility DateTimeDifference currentTime  previousTime  AppUtility TimeDifference MINUTE      You can compare the example below   if AppUtility DateTimeDifference currentTime  previousTime  AppUtility TimeDifference MINUTE    100       Log d  DateTime      There are more than 100 minutes difference between two dates      else      Log d  DateTime      There are no more than 100 minutes difference between two dates

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DateTimeUtils obj   new DateTimeUtils    SimpleDateFormat simpleDateFormat   new SimpleDateFormat  dd M yyyy hh mm ss     try       Date date1   simpleDateFormat parse  10 10 2013 11 30 10        Date date2   simpleDateFormat parse  13 10 2013 20 35 55         obj printDifference date1  date2      catch  ParseException e        e printStackTrace         1 minute   60 seconds   1 hour   60 x 60   3600   1 day   3600 x 24   86400 public void printDifference Date startDate  Date endDate           milliseconds     long different   endDate getTime   - startDate getTime         System out println  startDate       startDate       System out println  endDate      endDate       System out println  different       different        long secondsInMilli   1000      long minutesInMilli   secondsInMilli   60      long hoursInMilli   minutesInMilli   60      long daysInMilli   hoursInMilli   24       long elapsedDays   different   daysInMilli      different   different   daysInMilli       long elapsedHours   different   hoursInMilli      different   different   hoursInMilli       long elapsedMinutes   different   minutesInMilli      different   different   minutesInMilli       long elapsedSeconds   different   secondsInMilli       System out printf            d days   d hours   d minutes   d seconds n            elapsedDays  elapsedHours  elapsedMinutes  elapsedSeconds       out put is     startDate   Thu Oct 10 11 30 10 SGT 2013 endDate   Sun Oct 13 20 35 55 SGT 2013 different   291945000 3 days  9 hours  5 minutes  45 seconds

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Try this out   int day   0          int hh   0          int mm   0          try               SimpleDateFormat dateFormat   new SimpleDateFormat  dd-MMM-yyyy  at  hh mm aa                Date oldDate   dateFormat parse oldTime               Date cDate   new Date                Long timeDiff   cDate getTime   - oldDate getTime                day    int  TimeUnit MILLISECONDS toDays timeDiff               hh    int   TimeUnit MILLISECONDS toHours timeDiff  - TimeUnit DAYS toHours day                mm    int   TimeUnit MILLISECONDS toMinutes timeDiff  - TimeUnit HOURS toMinutes TimeUnit MILLISECONDS toHours timeDiff                  catch  ParseException e                e printStackTrace                       if  mm  lt   60  amp  amp  hh   0                if  hh  lt   60  amp  amp  day    0                    return day     DAYS AGO                 else                   return hh     HOUR AGO                           else               return mm     MIN AGO

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I use this  send start and end date in millisecond  public int GetDifference long start long end       Calendar cal   Calendar getInstance        cal setTimeInMillis start       int hour   cal get Calendar HOUR OF DAY       int min   cal get Calendar MINUTE       long t  23-hour  3600000  59-min  60000       t start t       int diff 0      if end gt t           diff  int   end-t   TimeUnit DAYS toMillis 1   1             return  diff

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It will give you difference in months   long milliSeconds1   calendar1 getTimeInMillis    long milliSeconds2   calendar2 getTimeInMillis    long periodSeconds    milliSeconds2 - milliSeconds1    1000  long elapsedDays   periodSeconds   60   60   24   System out println String format   d months   elapsedDays 30

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I arranged a little  This works great    SuppressLint  SimpleDateFormat   SimpleDateFormat simpleDateFormat   new SimpleDateFormat  dd MM yyyy        Date date   new Date        String dateOfDay   simpleDateFormat format date        String timeofday   android text format DateFormat format  HH mm ss   new Date   getTime    toString          SuppressLint  SimpleDateFormat   SimpleDateFormat dateFormat   new SimpleDateFormat  dd MM yyyy hh mm ss        try           Date date1   dateFormat parse 06 09 2018         10 12 56           Date date2   dateFormat parse dateOfDay         timeofday            printDifference date1  date2          catch  ParseException e            e printStackTrace            SuppressLint  SetTextI18n   private void printDifference Date startDate  Date endDate          milliseconds     long different   endDate getTime   - startDate getTime         long secondsInMilli   1000      long minutesInMilli   secondsInMilli   60      long hoursInMilli   minutesInMilli   60      long daysInMilli   hoursInMilli   24       long elapsedDays   different   daysInMilli      different   different   daysInMilli       long elapsedHours   different   hoursInMilli      different   different   hoursInMilli       long elapsedMinutes   different   minutesInMilli      different   different   minutesInMilli       long elapsedSeconds   different   secondsInMilli   Toast makeText context  elapsedDays         elapsedHours         elapsedMinutes         elapsedSeconds  Toast LENGTH SHORT  show

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Date userDob   new SimpleDateFormat  yyyy-MM-dd   parse dob   Date today   new Date    long diff    today getTime   - userDob getTime    int numOfDays    int   diff    1000   60   60   24    int hours    int   diff    1000   60   60    int minutes    int   diff    1000   60    int seconds    int   diff    1000

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Short  amp  Sweet          Get a diff between two dates        param oldDate the old date     param newDate the new date     return the diff value  in the days     public static long getDateDiff SimpleDateFormat format  String oldDate  String newDate        try           return TimeUnit DAYS convert format parse newDate  getTime   - format parse oldDate  getTime    TimeUnit MILLISECONDS         catch  Exception e            e printStackTrace            return 0            Usage   int dateDifference    int  getDateDiff new SimpleDateFormat  dd MM yyyy     29 05 2017    31 05 2017    System out println  dateDifference      dateDifference     Output   dateDifference  2   Kotlin Version    ExperimentalTime fun getDateDiff format  SimpleDateFormat  oldDate  String  newDate  String   Long       return try           DurationUnit DAYS convert              format parse newDate  time - format parse oldDate  time              DurationUnit MILLISECONDS                 catch  e  Exception            e printStackTrace           0

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This works and convert to String as a Bonus     protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState        setContentView R layout activity main        try             Dates to compare         String CurrentDate    09 24 2015           String FinalDate    09 26 2015            Date date1          Date date2           SimpleDateFormat dates   new SimpleDateFormat  MM dd yyyy               Setting dates         date1   dates parse CurrentDate           date2   dates parse FinalDate              Comparing dates         long difference   Math abs date1 getTime   - date2 getTime             long differenceDates   difference    24   60   60   1000              Convert long to String         String dayDifference   Long toString differenceDates            Log e  HERE   HERE      dayDifference          catch  Exception exception            Log e  DIDN T WORK    exception     exception

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You can generalize this into a function that lets you choose the output format  private String substractDates Date date1  Date date2  SimpleDateFormat format        long restDatesinMillis   date1 getTime  -date2 getTime        Date restdate   new Date restDatesinMillis        return format format restdate       Now is a simple function call like this  difference in hours  minutes and seconds   SimpleDateFormat formater   new SimpleDateFormat  yyyy-MM-dd HH mm ss     try       Date date1   formater parse dateEnd       Date date2   formater parse dateInit        String result   substractDates date1  date2  new SimpleDateFormat  HH mm ss          txtTime setText result     catch  ParseException e        e printStackTrace

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When you use Date   to calculate the difference in hours is necessary configure the SimpleDateFormat   in UTC otherwise you get one hour error due to Daylight SavingTime

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DateTime start   new DateTime 2013  10  20  5  0  0  Locale   DateTime end   new DateTime 2013  10  21  13  0  0  Locale   Days daysBetween start toLocalDate    end toLocalDate    getDays     it returns how many days between given two dates  where DateTime is from joda library

[android] Android difference between Two Dates

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