title: Android Calendar doesn't add Day
body: <pre><code>    val dayCalendar = Calendar.getInstance()
      dayCalendar.time = entryDateC.time
      for (day in 1..howManyDays) {
          dayCalendar.add(Calendar.DAY_OF_MONTH, 1)
          if (!disabledDays.contains(dayCalendar)) {
              disabledDays.add(dayCalendar)
          }
      }
  </code></pre>
  <p>I checked and made sure that <code>howManyDays</code> is 30 by logging <code>day</code> inside the for loop. What I'm trying to do, is to add to the <code>disabledDays</code> each day for one month after the <code>entryDate</code>, but this code doesn't seem to work. All what is added to the <code>disabledDays</code> is one date. Any help?</p>