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javaandroiddatejodatimeperiod

JodaTime unable to normalize PeriodType

So I have 2 date pickers for a start and end time, which give back a DateTime.

I need to calculate the duration between these two times in the format of "hours hr mins hr", so for example, "1 hr 30 mins". If there is a day difference, it will display "24 hr", so we use hours instead of days.

The problem I am having is that whatever way I got this working, it breaks if the user selects a month ahead. They never should choose a month ahead but are given the option to.

I get this error: 

java.lang.UnsupportedOperationException: Unable to normalize as PeriodType is missing either years or months but period has a month/year amount: P1M3W6DT1H
        at org.joda.time.Period.normalizedStandard(Period.java:1640)

And my code is:

Period durationHoursAndMinutes =  new Period(startDate.toLocalDateTime(), endDate.toLocalDateTime()).normalizedStandard(PeriodType.time());
PeriodFormatter formatter = new PeriodFormatterBuilder()
  .appendHours()
  .appendSuffix(getResources().getString(R.string.mytrips_tripview_rail_waitTime_hr))
  .appendSeparator(" ")
  .appendMinutes()
  .appendSuffix(getResources().getString(R.string.mytrips_tripview_rail_waitTime_min))
.toFormatter();

if(durationHoursAndMinutes.getMinutes() > 0){
  return formatter.print(durationHoursAndMinutes);
}else {
  return null;
}

I looked at the code for the PeriodType and it says to throw the exception if the months != 0, which it won't be. Just wondering if there is a way I can solve this. Thanks for any help

Solution

  • I suspect the simplest way to do this is just to pass the PeriodType into the constructor instead:

    new Period(
    startDate.toLocalDateTime(),
    endDate.toLocalDateTime(),
    PeriodType.time());

    Then you don't need to perform any other normalization.