use Calendar in DateUtils format method

The DatePickerDialog is using DateUtils to format the dialog's title
and the DateUtils class does not work with dates outside to the
specified range.
For example, if user selects 2038-03-07, DatePickerDialog shows
1902-01-30 on Title.
The reason for the DateUtils class not being able to format dates
outside the range of 1902 and 2036 is because internally it is using
the Time class which does not support such dates.
To fix it, use Calendar class in DataUilts format method.

Steps to reproduce:
1. Settings -> Date & time
2. uncheck Automatic date & time
3. Set Date
4. choose any date before 1902 or after 2037
5. update wrong date on Title

Bug: https://code.google.com/p/android/issues/detail?id=13050
Change-Id: I003266765751b5c340426af84daef271f39f771e

1 files changed, 28 insertions, 10 deletions

diff --git a/core/java/android/text/format/DateUtils.java b/core/java/android/text/format/DateUtils.java
index 08813dfaf5fb..6c8a7379eb63 100644
--- a/core/java/android/text/format/DateUtils.java
+++ b/core/java/android/text/format/DateUtils.java
@@ -1057,30 +1057,34 @@ public class DateUtils
         // computation below that'd otherwise be thrown out.
         boolean isInstant = (startMillis == endMillis);
 
-        Time startDate;
+        Calendar startCalendar, endCalendar;
+        Time startDate = new Time();
         if (timeZone != null) {
-            startDate = new Time(timeZone);
+            startCalendar = Calendar.getInstance(TimeZone.getTimeZone(timeZone));
         } else if (useUTC) {
-            startDate = new Time(Time.TIMEZONE_UTC);
+            startCalendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
         } else {
-            startDate = new Time();
+            startCalendar = Calendar.getInstance();
         }
-        startDate.set(startMillis);
+        startCalendar.setTimeInMillis(startMillis);
+        setTimeFromCalendar(startDate, startCalendar);
 
-        Time endDate;
+        Time endDate = new Time();
         int dayDistance;
         if (isInstant) {
             endDate = startDate;
             dayDistance = 0;
         } else {
             if (timeZone != null) {
-                endDate = new Time(timeZone);
+                endCalendar = Calendar.getInstance(TimeZone.getTimeZone(timeZone));
             } else if (useUTC) {
-                endDate = new Time(Time.TIMEZONE_UTC);
+                endCalendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
             } else {
-                endDate = new Time();
+                endCalendar = Calendar.getInstance();
             }
-            endDate.set(endMillis);
+            endCalendar.setTimeInMillis(endMillis);
+            setTimeFromCalendar(endDate, endCalendar);
+
             int startJulianDay = Time.getJulianDay(startMillis, startDate.gmtoff);
             int endJulianDay = Time.getJulianDay(endMillis, endDate.gmtoff);
             dayDistance = endJulianDay - startJulianDay;
@@ -1423,6 +1427,20 @@ public class DateUtils
         return formatter.format(fullFormat, timeString, startWeekDayString, dateString);
     }
 
+    private static void setTimeFromCalendar(Time t, Calendar c) {
+        t.hour = c.get(Calendar.HOUR_OF_DAY);
+        t.minute = c.get(Calendar.MINUTE);
+        t.month = c.get(Calendar.MONTH);
+        t.monthDay = c.get(Calendar.DAY_OF_MONTH);
+        t.second = c.get(Calendar.SECOND);
+        t.weekDay = c.get(Calendar.DAY_OF_WEEK) - 1;
+        t.year = c.get(Calendar.YEAR);
+        t.yearDay = c.get(Calendar.DAY_OF_YEAR);
+        t.isDst = (c.get(Calendar.DST_OFFSET) != 0) ? 1 : 0;
+        t.gmtoff = c.get(Calendar.ZONE_OFFSET) + c.get(Calendar.DST_OFFSET);
+        t.timezone = c.getTimeZone().getID();
+    }
+
     /**
      * Formats a date or a time according to the local conventions. There are
      * lots of options that allow the caller to control, for example, if the