(转)android开发中常见日期管理工具类

原地址：http://blog.csdn.net/lenmoyouzi/article/details/17524779

在日常的开发中，我们常常需要根据各种需要，对日期进行不同形式的格式化。这里我将日常用到的日期格式化加以总结。写出个工具方法，欢迎大家总结：

     1、对时间的加减操作，主要需求为闹钟等题型功能，用到的API为：Calendar  

             

 /**
      * 获取增加多少月的时间
      *
      * @return addMonth - 增加多少月
      */
     public static Date getAddMonthDate(int addMonth) {
         Calendar calendar = Calendar.getInstance();
         calendar.add(Calendar.MONTH, addMonth);
         return calendar.getTime();
     }

     /**
      * 获取增加多少天的时间
      *
      * @return addDay - 增加多少天
      */
     public static Date getAddDayDate(int addDay) {
         Calendar calendar = Calendar.getInstance();
         calendar.add(Calendar.DAY_OF_YEAR, addDay);
         return calendar.getTime();
     }
     /**
      * 获取增加多少小时的时间
      *
      * @return addDay - 增加多少消失
      */
     public static Date getAddHourDate(int addHour) {
         Calendar calendar = Calendar.getInstance();
         calendar.add(Calendar.HOUR, addHour);
         return calendar.getTime();
     }

2、按照  yyyy/MM/dd hh:mm等格式显示日期，主要用到的API为：SimpleDateFormat，Time

             

 /**
      * 显示时间格式为 hh:mm
      *
      * @param context
      * @param when
      * @return String
      */
     @SuppressLint("SimpleDateFormat")
     public static String formatTimeShort(Context context, long when) {
         String formatStr = "HH:mm";
         SimpleDateFormat sdf = new SimpleDateFormat(formatStr);
         String temp = sdf.format(when);
         if (temp != null && temp.length() == 5 && temp.substring(0, 1).equals("0")) {
             temp = temp.substring(1);
         }
         return temp;
     }

3、格式时间，让其输出，今天，昨天，两天前以及日期等。

         

 /**
      * 显示时间格式为今天、昨天、yyyy/MM/dd hh:mm
      *
      * @param context
      * @param when
      * @return String
      */
     public static String formatTimeString(Context context, long when) {
         Time then = new Time();
         then.set(when);
         Time now = new Time();
         now.setToNow();

         String formatStr;
         if (then.year != now.year) {
             formatStr = "yyyy/MM/dd";
         } else if (then.yearDay != now.yearDay) {
             // If it is from a different day than today, show only the date.
             formatStr = "MM/dd";
         } else {
             // Otherwise, if the message is from today, show the time.
             formatStr = "HH:MM";
         }

         if (then.year == now.year && then.yearDay == now.yearDay) {
             return context.getString(R.string.date_today);
         } else if ((then.year == now.year) && ((now.yearDay - then.yearDay) == 1)) {
             return context.getString(R.string.date_yesterday);
         } else {
             SimpleDateFormat sdf = new SimpleDateFormat(formatStr);
             String temp = sdf.format(when);
             if (temp != null && temp.length() == 5 && temp.substring(0, 1).equals("0")) {
                 temp = temp.substring(1);
             }
             return temp;
         }
     }

4、按照上下午显示时间：主要用到的API，DateUtils

             DateUtils.formatDateTime(this, System.getTimeMillis(), DateUtils.FORMAT_SHOW_TIME);

5、判断两个日期是否是同一个日期：

            

 /**
      * 是否同一天
      *
      * @param date1
      * @param date2
      * @return
      */
     public static boolean isSameDate(long date1, long date2) {
         long days1 = date1 / (1000 * 60 * 60 * 24);
         long days2 = date2 / (1000 * 60 * 60 * 24);
         return days1 == days2;
     }

6、附上android系统的DateUtils类的代码。

       

 public class DateUtils
 {
     private static final Object sLock = new Object();
     private static Configuration sLastConfig;
     private static java.text.DateFormat sStatusTimeFormat;
     private static String sElapsedFormatMMSS;
     private static String sElapsedFormatHMMSS;

     private static final String FAST_FORMAT_HMMSS = "%1$d:%2$02d:%3$02d";
     private static final String FAST_FORMAT_MMSS = "%1$02d:%2$02d";
     private static final char TIME_SEPARATOR = ':';


     public static final long SECOND_IN_MILLIS = 1000;
     public static final long MINUTE_IN_MILLIS = SECOND_IN_MILLIS * 60;
     public static final long HOUR_IN_MILLIS = MINUTE_IN_MILLIS * 60;
     public static final long DAY_IN_MILLIS = HOUR_IN_MILLIS * 24;
     public static final long WEEK_IN_MILLIS = DAY_IN_MILLIS * 7;
     /**
      * This constant is actually the length of 364 days, not of a year!
      */
     public static final long YEAR_IN_MILLIS = WEEK_IN_MILLIS * 52;

     // The following FORMAT_* symbols are used for specifying the format of
     // dates and times in the formatDateRange method.
     public static final int FORMAT_SHOW_TIME = 0x00001;
     public static final int FORMAT_SHOW_WEEKDAY = 0x00002;
     public static final int FORMAT_SHOW_YEAR = 0x00004;
     public static final int FORMAT_NO_YEAR = 0x00008;
     public static final int FORMAT_SHOW_DATE = 0x00010;
     public static final int FORMAT_NO_MONTH_DAY = 0x00020;
     @Deprecated
     public static final int FORMAT_12HOUR = 0x00040;
     @Deprecated
     public static final int FORMAT_24HOUR = 0x00080;
     @Deprecated
     public static final int FORMAT_CAP_AMPM = 0x00100;
     public static final int FORMAT_NO_NOON = 0x00200;
     @Deprecated
     public static final int FORMAT_CAP_NOON = 0x00400;
     public static final int FORMAT_NO_MIDNIGHT = 0x00800;
     @Deprecated
     public static final int FORMAT_CAP_MIDNIGHT = 0x01000;
     /**
      * @deprecated Use
      * {@link #formatDateRange(Context, Formatter, long, long, int, String) formatDateRange}
      * and pass in {@link Time#TIMEZONE_UTC Time.TIMEZONE_UTC} for the timeZone instead.
      */
     @Deprecated
     public static final int FORMAT_UTC = 0x02000;
     public static final int FORMAT_ABBREV_TIME = 0x04000;
     public static final int FORMAT_ABBREV_WEEKDAY = 0x08000;
     public static final int FORMAT_ABBREV_MONTH = 0x10000;
     public static final int FORMAT_NUMERIC_DATE = 0x20000;
     public static final int FORMAT_ABBREV_RELATIVE = 0x40000;
     public static final int FORMAT_ABBREV_ALL = 0x80000;
     @Deprecated
     public static final int FORMAT_CAP_NOON_MIDNIGHT = (FORMAT_CAP_NOON | FORMAT_CAP_MIDNIGHT);
     @Deprecated
     public static final int FORMAT_NO_NOON_MIDNIGHT = (FORMAT_NO_NOON | FORMAT_NO_MIDNIGHT);

     // Date and time format strings that are constant and don't need to be
     // translated.
     /**
      * This is not actually the preferred 24-hour date format in all locales.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final String HOUR_MINUTE_24 = "%H:%M";
     public static final String MONTH_FORMAT = "%B";
     /**
      * This is not actually a useful month name in all locales.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final String ABBREV_MONTH_FORMAT = "%b";
     public static final String NUMERIC_MONTH_FORMAT = "%m";
     public static final String MONTH_DAY_FORMAT = "%-d";
     public static final String YEAR_FORMAT = "%Y";
     public static final String YEAR_FORMAT_TWO_DIGITS = "%g";
     public static final String WEEKDAY_FORMAT = "%A";
     public static final String ABBREV_WEEKDAY_FORMAT = "%a";

     // This table is used to lookup the resource string id of a format string
     // used for formatting a start and end date that fall in the same year.
     // The index is constructed from a bit-wise OR of the boolean values:
     // {showTime, showYear, showWeekDay}.  For example, if showYear and
     // showWeekDay are both true, then the index would be 3.
     /** @deprecated do not use. */
     public static final int sameYearTable[] = {
         com.android.internal.R.string.same_year_md1_md2,
         com.android.internal.R.string.same_year_wday1_md1_wday2_md2,
         com.android.internal.R.string.same_year_mdy1_mdy2,
         com.android.internal.R.string.same_year_wday1_mdy1_wday2_mdy2,
         com.android.internal.R.string.same_year_md1_time1_md2_time2,
         com.android.internal.R.string.same_year_wday1_md1_time1_wday2_md2_time2,
         com.android.internal.R.string.same_year_mdy1_time1_mdy2_time2,
         com.android.internal.R.string.same_year_wday1_mdy1_time1_wday2_mdy2_time2,

         // Numeric date strings
         com.android.internal.R.string.numeric_md1_md2,
         com.android.internal.R.string.numeric_wday1_md1_wday2_md2,
         com.android.internal.R.string.numeric_mdy1_mdy2,
         com.android.internal.R.string.numeric_wday1_mdy1_wday2_mdy2,
         com.android.internal.R.string.numeric_md1_time1_md2_time2,
         com.android.internal.R.string.numeric_wday1_md1_time1_wday2_md2_time2,
         com.android.internal.R.string.numeric_mdy1_time1_mdy2_time2,
         com.android.internal.R.string.numeric_wday1_mdy1_time1_wday2_mdy2_time2,
     };

     // This table is used to lookup the resource string id of a format string
     // used for formatting a start and end date that fall in the same month.
     // The index is constructed from a bit-wise OR of the boolean values:
     // {showTime, showYear, showWeekDay}.  For example, if showYear and
     // showWeekDay are both true, then the index would be 3.
     /** @deprecated do not use. */
     public static final int sameMonthTable[] = {
         com.android.internal.R.string.same_month_md1_md2,
         com.android.internal.R.string.same_month_wday1_md1_wday2_md2,
         com.android.internal.R.string.same_month_mdy1_mdy2,
         com.android.internal.R.string.same_month_wday1_mdy1_wday2_mdy2,
         com.android.internal.R.string.same_month_md1_time1_md2_time2,
         com.android.internal.R.string.same_month_wday1_md1_time1_wday2_md2_time2,
         com.android.internal.R.string.same_month_mdy1_time1_mdy2_time2,
         com.android.internal.R.string.same_month_wday1_mdy1_time1_wday2_mdy2_time2,

         com.android.internal.R.string.numeric_md1_md2,
         com.android.internal.R.string.numeric_wday1_md1_wday2_md2,
         com.android.internal.R.string.numeric_mdy1_mdy2,
         com.android.internal.R.string.numeric_wday1_mdy1_wday2_mdy2,
         com.android.internal.R.string.numeric_md1_time1_md2_time2,
         com.android.internal.R.string.numeric_wday1_md1_time1_wday2_md2_time2,
         com.android.internal.R.string.numeric_mdy1_time1_mdy2_time2,
         com.android.internal.R.string.numeric_wday1_mdy1_time1_wday2_mdy2_time2,
     };

     /**
      * Request the full spelled-out name. For use with the 'abbrev' parameter of
      * {@link #getDayOfWeekString} and {@link #getMonthString}.
      *
      * @more
      *       e.g. "Sunday" or "January"
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final int LENGTH_LONG = 10;

     /**
      * Request an abbreviated version of the name. For use with the 'abbrev'
      * parameter of {@link #getDayOfWeekString} and {@link #getMonthString}.
      *
      * @more
      *       e.g. "Sun" or "Jan"
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final int LENGTH_MEDIUM = 20;

     /**
      * Request a shorter abbreviated version of the name.
      * For use with the 'abbrev' parameter of {@link #getDayOfWeekString} and {@link #getMonthString}.
      * @more
      * e.g. "Su" or "Jan"
      * In most languages, the results returned for LENGTH_SHORT will be the same as
      * the results returned for {@link #LENGTH_MEDIUM}.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final int LENGTH_SHORT = 30;

     /**
      * Request an even shorter abbreviated version of the name.
      * Do not use this.  Currently this will always return the same result
      * as {@link #LENGTH_SHORT}.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final int LENGTH_SHORTER = 40;

     /**
      * Request an even shorter abbreviated version of the name.
      * For use with the 'abbrev' parameter of {@link #getDayOfWeekString} and {@link #getMonthString}.
      * @more
      * e.g. "S", "T", "T" or "J"
      * In some languages, the results returned for LENGTH_SHORTEST will be the same as
      * the results returned for {@link #LENGTH_SHORT}.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static final int LENGTH_SHORTEST = 50;

     /**
      * Return a string for the day of the week.
      * @param dayOfWeek One of {@link Calendar#SUNDAY Calendar.SUNDAY},
      *               {@link Calendar#MONDAY Calendar.MONDAY}, etc.
      * @param abbrev One of {@link #LENGTH_LONG}, {@link #LENGTH_SHORT},
      *               {@link #LENGTH_MEDIUM}, or {@link #LENGTH_SHORTEST}.
      *               Note that in most languages, {@link #LENGTH_SHORT}
      *               will return the same as {@link #LENGTH_MEDIUM}.
      *               Undefined lengths will return {@link #LENGTH_MEDIUM}
      *               but may return something different in the future.
      * @throws IndexOutOfBoundsException if the dayOfWeek is out of bounds.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static String getDayOfWeekString(int dayOfWeek, int abbrev) {
         LocaleData d = LocaleData.get(Locale.getDefault());
         String[] names;
         switch (abbrev) {
             case LENGTH_LONG:       names = d.longWeekdayNames;  break;
             case LENGTH_MEDIUM:     names = d.shortWeekdayNames; break;
             case LENGTH_SHORT:      names = d.shortWeekdayNames; break; // TODO
             case LENGTH_SHORTER:    names = d.shortWeekdayNames; break; // TODO
             case LENGTH_SHORTEST:   names = d.tinyWeekdayNames;  break;
             default:                names = d.shortWeekdayNames; break;
         }
         return names[dayOfWeek];
     }

     /**
      * Return a localized string for AM or PM.
      * @param ampm Either {@link Calendar#AM Calendar.AM} or {@link Calendar#PM Calendar.PM}.
      * @throws IndexOutOfBoundsException if the ampm is out of bounds.
      * @return Localized version of "AM" or "PM".
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static String getAMPMString(int ampm) {
         return LocaleData.get(Locale.getDefault()).amPm[ampm - Calendar.AM];
     }

     /**
      * Return a localized string for the month of the year.
      * @param month One of {@link Calendar#JANUARY Calendar.JANUARY},
      *               {@link Calendar#FEBRUARY Calendar.FEBRUARY}, etc.
      * @param abbrev One of {@link #LENGTH_LONG}, {@link #LENGTH_MEDIUM},
      *               or {@link #LENGTH_SHORTEST}.
      *               Undefined lengths will return {@link #LENGTH_MEDIUM}
      *               but may return something different in the future.
      * @return Localized month of the year.
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static String getMonthString(int month, int abbrev) {
         // Note that here we use d.shortMonthNames for MEDIUM, SHORT and SHORTER.
         // This is a shortcut to not spam the translators with too many variations
         // of the same string.  If we find that in a language the distinction
         // is necessary, we can can add more without changing this API.
         LocaleData d = LocaleData.get(Locale.getDefault());
         String[] names;
         switch (abbrev) {
             case LENGTH_LONG:       names = d.longMonthNames;  break;
             case LENGTH_MEDIUM:     names = d.shortMonthNames; break;
             case LENGTH_SHORT:      names = d.shortMonthNames; break;
             case LENGTH_SHORTER:    names = d.shortMonthNames; break;
             case LENGTH_SHORTEST:   names = d.tinyMonthNames;  break;
             default:                names = d.shortMonthNames; break;
         }
         return names[month];
     }

     /**
      * Return a localized string for the month of the year, for
      * contexts where the month is not formatted together with
      * a day of the month.
      *
      * @param month One of {@link Calendar#JANUARY Calendar.JANUARY},
      *               {@link Calendar#FEBRUARY Calendar.FEBRUARY}, etc.
      * @param abbrev One of {@link #LENGTH_LONG}, {@link #LENGTH_MEDIUM},
      *               or {@link #LENGTH_SHORTEST}.
      *               Undefined lengths will return {@link #LENGTH_MEDIUM}
      *               but may return something different in the future.
      * @return Localized month of the year.
      * @hide Pending API council approval
      * @deprecated use {@link java.text.SimpleDateFormat} instead.
      */
     @Deprecated
     public static String getStandaloneMonthString(int month, int abbrev) {
         // Note that here we use d.shortMonthNames for MEDIUM, SHORT and SHORTER.
         // This is a shortcut to not spam the translators with too many variations
         // of the same string.  If we find that in a language the distinction
         // is necessary, we can can add more without changing this API.
         LocaleData d = LocaleData.get(Locale.getDefault());
         String[] names;
         switch (abbrev) {
             case LENGTH_LONG:       names = d.longStandAloneMonthNames;
                                                             break;
             case LENGTH_MEDIUM:     names = d.shortMonthNames; break;
             case LENGTH_SHORT:      names = d.shortMonthNames; break;
             case LENGTH_SHORTER:    names = d.shortMonthNames; break;
             case LENGTH_SHORTEST:   names = d.tinyMonthNames;  break;
             default:                names = d.shortMonthNames; break;
         }
         return names[month];
     }

     /**
      * Returns a string describing the elapsed time since startTime.
      * @param startTime some time in the past.
      * @return a String object containing the elapsed time.
      * @see #getRelativeTimeSpanString(long, long, long)
      */
     public static CharSequence getRelativeTimeSpanString(long startTime) {
         return getRelativeTimeSpanString(startTime, System.currentTimeMillis(), MINUTE_IN_MILLIS);
     }

     /**
      * Returns a string describing 'time' as a time relative to 'now'.
      *
      * Time spans in the past are formatted like "42 minutes ago".
      * Time spans in the future are formatted like "in 42 minutes".
      *
      * @param time the time to describe, in milliseconds
      * @param now the current time in milliseconds
      * @param minResolution the minimum timespan to report. For example, a time 3 seconds in the
      *     past will be reported as "0 minutes ago" if this is set to MINUTE_IN_MILLIS. Pass one of
      *     0, MINUTE_IN_MILLIS, HOUR_IN_MILLIS, DAY_IN_MILLIS, WEEK_IN_MILLIS
      */
     public static CharSequence getRelativeTimeSpanString(long time, long now, long minResolution) {
         int flags = FORMAT_SHOW_DATE | FORMAT_SHOW_YEAR | FORMAT_ABBREV_MONTH;
         return getRelativeTimeSpanString(time, now, minResolution, flags);
     }

     /**
      * Returns a string describing 'time' as a time relative to 'now'.
      *
      * Time spans in the past are formatted like "42 minutes ago". Time spans in
      * the future are formatted like "in 42 minutes".
      *
      * Can use {@link #FORMAT_ABBREV_RELATIVE} flag to use abbreviated relative
      * times, like "42 mins ago".
      *
      * @param time the time to describe, in milliseconds
      * @param now the current time in milliseconds
      * @param minResolution the minimum timespan to report. For example, a time
      *            3 seconds in the past will be reported as "0 minutes ago" if
      *            this is set to MINUTE_IN_MILLIS. Pass one of 0,
      *            MINUTE_IN_MILLIS, HOUR_IN_MILLIS, DAY_IN_MILLIS,
      *            WEEK_IN_MILLIS
      * @param flags a bit mask of formatting options, such as
      *            {@link #FORMAT_NUMERIC_DATE} or
      *            {@link #FORMAT_ABBREV_RELATIVE}
      */
     public static CharSequence getRelativeTimeSpanString(long time, long now, long minResolution,
             int flags) {
         Resources r = Resources.getSystem();
         boolean abbrevRelative = (flags & (FORMAT_ABBREV_RELATIVE | FORMAT_ABBREV_ALL)) != 0;

         boolean past = (now >= time);
         long duration = Math.abs(now - time);

         int resId;
         long count;
         if (duration < MINUTE_IN_MILLIS && minResolution < MINUTE_IN_MILLIS) {
             count = duration / SECOND_IN_MILLIS;
             if (past) {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_num_seconds_ago;
                 } else {
                     resId = com.android.internal.R.plurals.num_seconds_ago;
                 }
             } else {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_in_num_seconds;
                 } else {
                     resId = com.android.internal.R.plurals.in_num_seconds;
                 }
             }
         } else if (duration < HOUR_IN_MILLIS && minResolution < HOUR_IN_MILLIS) {
             count = duration / MINUTE_IN_MILLIS;
             if (past) {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_num_minutes_ago;
                 } else {
                     resId = com.android.internal.R.plurals.num_minutes_ago;
                 }
             } else {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_in_num_minutes;
                 } else {
                     resId = com.android.internal.R.plurals.in_num_minutes;
                 }
             }
         } else if (duration < DAY_IN_MILLIS && minResolution < DAY_IN_MILLIS) {
             count = duration / HOUR_IN_MILLIS;
             if (past) {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_num_hours_ago;
                 } else {
                     resId = com.android.internal.R.plurals.num_hours_ago;
                 }
             } else {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_in_num_hours;
                 } else {
                     resId = com.android.internal.R.plurals.in_num_hours;
                 }
             }
         } else if (duration < WEEK_IN_MILLIS && minResolution < WEEK_IN_MILLIS) {
             count = getNumberOfDaysPassed(time, now);
             if (past) {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_num_days_ago;
                 } else {
                     resId = com.android.internal.R.plurals.num_days_ago;
                 }
             } else {
                 if (abbrevRelative) {
                     resId = com.android.internal.R.plurals.abbrev_in_num_days;
                 } else {
                     resId = com.android.internal.R.plurals.in_num_days;
                 }
             }
         } else {
             // We know that we won't be showing the time, so it is safe to pass
             // in a null context.
             return formatDateRange(null, time, time, flags);
         }

         String format = r.getQuantityString(resId, (int) count);
         return String.format(format, count);
     }

     /**
      * Returns the number of days passed between two dates.
      *
      * @param date1 first date
      * @param date2 second date
      * @return number of days passed between to dates.
      */
     private synchronized static long getNumberOfDaysPassed(long date1, long date2) {
         if (sThenTime == null) {
             sThenTime = new Time();
         }
         sThenTime.set(date1);
         int day1 = Time.getJulianDay(date1, sThenTime.gmtoff);
         sThenTime.set(date2);
         int day2 = Time.getJulianDay(date2, sThenTime.gmtoff);
         return Math.abs(day2 - day1);
     }

     /**
      * Return string describing the elapsed time since startTime formatted like
      * "[relative time/date], [time]".
      *
      * Example output strings for the US date format.
      *   
          * 3 mins ago, 10:15 AM  
          * yesterday, 12:20 PM  
          * Dec 12, 4:12 AM  
          * 11/14/2007, 8:20 AM  
          *
      *
      * @param time some time in the past.
      * @param minResolution the minimum elapsed time (in milliseconds) to report
      *            when showing relative times. For example, a time 3 seconds in
      *            the past will be reported as "0 minutes ago" if this is set to
      *            {@link #MINUTE_IN_MILLIS}.
      * @param transitionResolution the elapsed time (in milliseconds) at which
      *            to stop reporting relative measurements. Elapsed times greater
      *            than this resolution will default to normal date formatting.
      *            For example, will transition from "6 days ago" to "Dec 12"
      *            when using {@link #WEEK_IN_MILLIS}.
      */
     public static CharSequence getRelativeDateTimeString(Context c, long time, long minResolution,
             long transitionResolution, int flags) {
         Resources r = Resources.getSystem();

         long now = System.currentTimeMillis();
         long duration = Math.abs(now - time);

         // getRelativeTimeSpanString() doesn't correctly format relative dates
         // above a week or exact dates below a day, so clamp
         // transitionResolution as needed.
         if (transitionResolution > WEEK_IN_MILLIS) {
             transitionResolution = WEEK_IN_MILLIS;
         } else if (transitionResolution < DAY_IN_MILLIS) {
             transitionResolution = DAY_IN_MILLIS;
         }

         CharSequence timeClause = formatDateRange(c, time, time, FORMAT_SHOW_TIME);

         String result;
         if (duration < transitionResolution) {
             CharSequence relativeClause = getRelativeTimeSpanString(time, now, minResolution, flags);
             result = r.getString(com.android.internal.R.string.relative_time, relativeClause, timeClause);
         } else {
             CharSequence dateClause = getRelativeTimeSpanString(c, time, false);
             result = r.getString(com.android.internal.R.string.date_time, dateClause, timeClause);
         }

         return result;
     }

     /**
      * Returns a string describing a day relative to the current day. For example if the day is
      * today this function returns "Today", if the day was a week ago it returns "7 days ago", and
      * if the day is in 2 weeks it returns "in 14 days".
      *
      * @param r the resources to get the strings from
      * @param day the relative day to describe in UTC milliseconds
      * @param today the current time in UTC milliseconds
      * @return a formatting string
      */
     private static final String getRelativeDayString(Resources r, long day, long today) {
         Time startTime = new Time();
         startTime.set(day);
         Time currentTime = new Time();
         currentTime.set(today);

         int startDay = Time.getJulianDay(day, startTime.gmtoff);
         int currentDay = Time.getJulianDay(today, currentTime.gmtoff);

         int days = Math.abs(currentDay - startDay);
         boolean past = (today > day);

         // TODO: some locales name other days too, such as de_DE's "Vorgestern" (today - 2).
         Locale locale = r.getConfiguration().locale;
         if (locale == null) {
             locale = Locale.getDefault();
         }
         if (days == 1) {
             if (past) {
                 return LocaleData.get(locale).yesterday;
             } else {
                 return LocaleData.get(locale).tomorrow;
             }
         } else if (days == 0) {
             return LocaleData.get(locale).today;
         }

         int resId;
         if (past) {
             resId = com.android.internal.R.plurals.num_days_ago;
         } else {
             resId = com.android.internal.R.plurals.in_num_days;
         }

         String format = r.getQuantityString(resId, days);
         return String.format(format, days);
     }

     private static void initFormatStrings() {
         synchronized (sLock) {
             initFormatStringsLocked();
         }
     }

     private static void initFormatStringsLocked() {
         Resources r = Resources.getSystem();
         Configuration cfg = r.getConfiguration();
         if (sLastConfig == null || !sLastConfig.equals(cfg)) {
             sLastConfig = cfg;
             sStatusTimeFormat = java.text.DateFormat.getTimeInstance(java.text.DateFormat.SHORT);
             sElapsedFormatMMSS = r.getString(com.android.internal.R.string.elapsed_time_short_format_mm_ss);
             sElapsedFormatHMMSS = r.getString(com.android.internal.R.string.elapsed_time_short_format_h_mm_ss);
         }
     }

     /**
      * Format a time so it appears like it would in the status bar clock.
      * @deprecated use {@link #DateFormat.getTimeFormat(Context)} instead.
      * @hide
      */
     public static final CharSequence timeString(long millis) {
         synchronized (sLock) {
             initFormatStringsLocked();
             return sStatusTimeFormat.format(millis);
         }
     }

     /**
      * Formats an elapsed time in the form "MM:SS" or "H:MM:SS"
      * for display on the call-in-progress screen.
      * @param elapsedSeconds the elapsed time in seconds.
      */
     public static String formatElapsedTime(long elapsedSeconds) {
         return formatElapsedTime(null, elapsedSeconds);
     }

     /**
      * Formats an elapsed time in the form "MM:SS" or "H:MM:SS"
      * for display on the call-in-progress screen.
      *
      * @param recycle {@link StringBuilder} to recycle, if possible
      * @param elapsedSeconds the elapsed time in seconds.
      */
     public static String formatElapsedTime(StringBuilder recycle, long elapsedSeconds) {
         initFormatStrings();

         long hours = 0;
         long minutes = 0;
         long seconds = 0;

         if (elapsedSeconds >= 3600) {
             hours = elapsedSeconds / 3600;
             elapsedSeconds -= hours * 3600;
         }
         if (elapsedSeconds >= 60) {
             minutes = elapsedSeconds / 60;
             elapsedSeconds -= minutes * 60;
         }
         seconds = elapsedSeconds;

         String result;
         if (hours > 0) {
             return formatElapsedTime(recycle, sElapsedFormatHMMSS, hours, minutes, seconds);
         } else {
             return formatElapsedTime(recycle, sElapsedFormatMMSS, minutes, seconds);
         }
     }

     private static void append(StringBuilder sb, long value, boolean pad, char zeroDigit) {
         if (value < 10) {
             if (pad) {
                 sb.append(zeroDigit);
             }
         } else {
             sb.append((char) (zeroDigit + (value / 10)));
         }
         sb.append((char) (zeroDigit + (value % 10)));
     }

     /**
      * Fast formatting of h:mm:ss.
      */
     private static String formatElapsedTime(StringBuilder recycle, String format, long hours,
             long minutes, long seconds) {
         if (FAST_FORMAT_HMMSS.equals(format)) {
             char zeroDigit = LocaleData.get(Locale.getDefault()).zeroDigit;

             StringBuilder sb = recycle;
             if (sb == null) {
                 sb = new StringBuilder(8);
             } else {
                 sb.setLength(0);
             }
             append(sb, hours, false, zeroDigit);
             sb.append(TIME_SEPARATOR);
             append(sb, minutes, true, zeroDigit);
             sb.append(TIME_SEPARATOR);
             append(sb, seconds, true, zeroDigit);
             return sb.toString();
         } else {
             return String.format(format, hours, minutes, seconds);
         }
     }

     /**
      * Fast formatting of mm:ss.
      */
     private static String formatElapsedTime(StringBuilder recycle, String format, long minutes,
             long seconds) {
         if (FAST_FORMAT_MMSS.equals(format)) {
             char zeroDigit = LocaleData.get(Locale.getDefault()).zeroDigit;

             StringBuilder sb = recycle;
             if (sb == null) {
                 sb = new StringBuilder(8);
             } else {
                 sb.setLength(0);
             }
             append(sb, minutes, false, zeroDigit);
             sb.append(TIME_SEPARATOR);
             append(sb, seconds, true, zeroDigit);
             return sb.toString();
         } else {
             return String.format(format, minutes, seconds);
         }
     }

     /**
      * Format a date / time such that if the then is on the same day as now, it shows
      * just the time and if it's a different day, it shows just the date.
      *
      * The parameters dateFormat and timeFormat should each be one of
      * {@link java.text.DateFormat#DEFAULT},
      * {@link java.text.DateFormat#FULL},
      * {@link java.text.DateFormat#LONG},
      * {@link java.text.DateFormat#MEDIUM}
      * or
      * {@link java.text.DateFormat#SHORT}
      *
      * @param then the date to format
      * @param now the base time
      * @param dateStyle how to format the date portion.
      * @param timeStyle how to format the time portion.
      */
     public static final CharSequence formatSameDayTime(long then, long now,
             int dateStyle, int timeStyle) {
         Calendar thenCal = new GregorianCalendar();
         thenCal.setTimeInMillis(then);
         Date thenDate = thenCal.getTime();
         Calendar nowCal = new GregorianCalendar();
         nowCal.setTimeInMillis(now);

         java.text.DateFormat f;

         if (thenCal.get(Calendar.YEAR) == nowCal.get(Calendar.YEAR)
                 && thenCal.get(Calendar.MONTH) == nowCal.get(Calendar.MONTH)
                 && thenCal.get(Calendar.DAY_OF_MONTH) == nowCal.get(Calendar.DAY_OF_MONTH)) {
             f = java.text.DateFormat.getTimeInstance(timeStyle);
         } else {
             f = java.text.DateFormat.getDateInstance(dateStyle);
         }
         return f.format(thenDate);
     }

     /**
      * @hide
      * @deprecated use {@link android.text.format.Time}
      */
     public static Calendar newCalendar(boolean zulu)
     {
         if (zulu)
             return Calendar.getInstance(TimeZone.getTimeZone("GMT"));

         return Calendar.getInstance();
     }

     /**
      * @return true if the supplied when is today else false
      */
     public static boolean isToday(long when) {
         Time time = new Time();
         time.set(when);

         int thenYear = time.year;
         int thenMonth = time.month;
         int thenMonthDay = time.monthDay;

         time.set(System.currentTimeMillis());
         return (thenYear == time.year)
                 && (thenMonth == time.month)
                 && (thenMonthDay == time.monthDay);
     }

     /**
      * @hide
      * @deprecated use {@link android.text.format.Time}
      * Return true if this date string is local time
      */
     public static boolean isUTC(String s)
     {
         if (s.length() == 16 && s.charAt(15) == 'Z') {
             return true;
         }
         if (s.length() == 9 && s.charAt(8) == 'Z') {
             // XXX not sure if this case possible/valid
             return true;
         }
         return false;
     }

     /**
      * Return a string containing the date and time in RFC2445 format.
      * Ensures that the time is written in UTC.  The Calendar class doesn't
      * really help out with this, so this is slower than it ought to be.
      *
      * @param cal the date and time to write
      * @hide
      * @deprecated use {@link android.text.format.Time}
      */
     public static String writeDateTime(Calendar cal)
     {
         TimeZone tz = TimeZone.getTimeZone("GMT");
         GregorianCalendar c = new GregorianCalendar(tz);
         c.setTimeInMillis(cal.getTimeInMillis());
         return writeDateTime(c, true);
     }

     /**
      * Return a string containing the date and time in RFC2445 format.
      *
      * @param cal the date and time to write
      * @param zulu If the calendar is in UTC, pass true, and a Z will
      * be written at the end as per RFC2445.  Otherwise, the time is
      * considered in localtime.
      * @hide
      * @deprecated use {@link android.text.format.Time}
      */
     public static String writeDateTime(Calendar cal, boolean zulu)
     {
         StringBuilder sb = new StringBuilder();
         sb.ensureCapacity(16);
         if (zulu) {
             sb.setLength(16);
             sb.setCharAt(15, 'Z');
         } else {
             sb.setLength(15);
         }
         return writeDateTime(cal, sb);
     }

     /**
      * Return a string containing the date and time in RFC2445 format.
      *
      * @param cal the date and time to write
      * @param sb a StringBuilder to use.  It is assumed that setLength
      *           has already been called on sb to the appropriate length
      *           which is sb.setLength(zulu ? 16 : 15)
      * @hide
      * @deprecated use {@link android.text.format.Time}
      */
     public static String writeDateTime(Calendar cal, StringBuilder sb)
     {
         int n;

         n = cal.get(Calendar.YEAR);
         sb.setCharAt(3, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(2, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(1, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(0, (char)('0'+n%10));

         n = cal.get(Calendar.MONTH) + 1;
         sb.setCharAt(5, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(4, (char)('0'+n%10));

         n = cal.get(Calendar.DAY_OF_MONTH);
         sb.setCharAt(7, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(6, (char)('0'+n%10));

         sb.setCharAt(8, 'T');

         n = cal.get(Calendar.HOUR_OF_DAY);
         sb.setCharAt(10, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(9, (char)('0'+n%10));

         n = cal.get(Calendar.MINUTE);
         sb.setCharAt(12, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(11, (char)('0'+n%10));

         n = cal.get(Calendar.SECOND);
         sb.setCharAt(14, (char)('0'+n%10));
         n /= 10;
         sb.setCharAt(13, (char)('0'+n%10));

         return sb.toString();
     }

     /**
      * @hide
      * @deprecated use {@link android.text.format.Time}
      */
     public static void assign(Calendar lval, Calendar rval)
     {
         // there should be a faster way.
         lval.clear();
         lval.setTimeInMillis(rval.getTimeInMillis());
     }

     /**
      * Formats a date or a time range according to the local conventions.
      *
      * Note that this is a convenience method. Using it involves creating an
      * internal {@link java.util.Formatter} instance on-the-fly, which is
      * somewhat costly in terms of memory and time. This is probably acceptable
      * if you use the method only rarely, but if you rely on it for formatting a
      * large number of dates, consider creating and reusing your own
      * {@link java.util.Formatter} instance and use the version of
      * {@link #formatDateRange(Context, long, long, int) formatDateRange}
      * that takes a {@link java.util.Formatter}.
      *
      * @param context the context is required only if the time is shown
      * @param startMillis the start time in UTC milliseconds
      * @param endMillis the end time in UTC milliseconds
      * @param flags a bit mask of options See
      * {@link #formatDateRange(Context, Formatter, long, long, int, String) formatDateRange}
      * @return a string containing the formatted date/time range.
      */
     public static String formatDateRange(Context context, long startMillis,
             long endMillis, int flags) {
         Formatter f = new Formatter(new StringBuilder(50), Locale.getDefault());
         return formatDateRange(context, f, startMillis, endMillis, flags).toString();
     }

     /**
      * Formats a date or a time range according to the local conventions.
      *
      * Note that this is a convenience method for formatting the date or
      * time range in the local time zone. If you want to specify the time
      * zone please use
      * {@link #formatDateRange(Context, Formatter, long, long, int, String) formatDateRange}.
      *
      * @param context the context is required only if the time is shown
      * @param formatter the Formatter used for formatting the date range.
      * Note: be sure to call setLength(0) on StringBuilder passed to
      * the Formatter constructor unless you want the results to accumulate.
      * @param startMillis the start time in UTC milliseconds
      * @param endMillis the end time in UTC milliseconds
      * @param flags a bit mask of options See
      * {@link #formatDateRange(Context, Formatter, long, long, int, String) formatDateRange}
      * @return a string containing the formatted date/time range.
      */
     public static Formatter formatDateRange(Context context, Formatter formatter, long startMillis,
             long endMillis, int flags) {
         return formatDateRange(context, formatter, startMillis, endMillis, flags, null);
     }

     /**
      * Formats a date or a time range according to the local conventions.
      *
      *
      * Example output strings (date formats in these examples are shown using
      * the US date format convention but that may change depending on the
      * local settings):
      *   
          *   10:15am  
          *   3:00pm - 4:00pm  
          *   3pm - 4pm  
          *   3PM - 4PM  
          *   08:00 - 17:00  
          *   Oct 9  
          *   Tue, Oct 9  
          *   October 9, 2007  
          *   Oct 9 - 10  
          *   Oct 9 - 10, 2007  
          *   Oct 28 - Nov 3, 2007  
          *   Dec 31, 2007 - Jan 1, 2008  
          *   Oct 9, 8:00am - Oct 10, 5:00pm  
          *   12/31/2007 - 01/01/2008  
          *
      *
      *
      * The flags argument is a bitmask of options from the following list:
      *
      *   
          *   FORMAT_SHOW_TIME  
          *   FORMAT_SHOW_WEEKDAY  
          *   FORMAT_SHOW_YEAR  
          *   FORMAT_NO_YEAR  
          *   FORMAT_SHOW_DATE  
          *   FORMAT_NO_MONTH_DAY  
          *   FORMAT_12HOUR  
          *   FORMAT_24HOUR  
          *   FORMAT_CAP_AMPM  
          *   FORMAT_NO_NOON  
          *   FORMAT_CAP_NOON  
          *   FORMAT_NO_MIDNIGHT  
          *   FORMAT_CAP_MIDNIGHT  
          *   FORMAT_UTC  
          *   FORMAT_ABBREV_TIME  
          *   FORMAT_ABBREV_WEEKDAY  
          *   FORMAT_ABBREV_MONTH  
          *   FORMAT_ABBREV_ALL  
          *   FORMAT_NUMERIC_DATE  
          *
      *
      *
      * If FORMAT_SHOW_TIME is set, the time is shown as part of the date range.
      * If the start and end time are the same, then just the start time is
      * shown.
      *
      *
      * If FORMAT_SHOW_WEEKDAY is set, then the weekday is shown.
      *
      *
      * If FORMAT_SHOW_YEAR is set, then the year is always shown.
      * If FORMAT_NO_YEAR is set, then the year is not shown.
      * If neither FORMAT_SHOW_YEAR nor FORMAT_NO_YEAR are set, then the year
      * is shown only if it is different from the current year, or if the start
      * and end dates fall on different years.  If both are set,
      * FORMAT_SHOW_YEAR takes precedence.
      *
      *
      * Normally the date is shown unless the start and end day are the same.
      * If FORMAT_SHOW_DATE is set, then the date is always shown, even for
      * same day ranges.
      *
      *
      * If FORMAT_NO_MONTH_DAY is set, then if the date is shown, just the
      * month name will be shown, not the day of the month.  For example,
      * "January, 2008" instead of "January 6 - 12, 2008".
      *
      *
      * If FORMAT_CAP_AMPM is set and 12-hour time is used, then the "AM"
      * and "PM" are capitalized.  You should not use this flag
      * because in some locales these terms cannot be capitalized, and in
      * many others it doesn't make sense to do so even though it is possible.
      *
      *
      * If FORMAT_NO_NOON is set and 12-hour time is used, then "12pm" is
      * shown instead of "noon".
      *
      *
      * If FORMAT_CAP_NOON is set and 12-hour time is used, then "Noon" is
      * shown instead of "noon".  You should probably not use this flag
      * because in many locales it will not make sense to capitalize
      * the term.
      *
      *
      * If FORMAT_NO_MIDNIGHT is set and 12-hour time is used, then "12am" is
      * shown instead of "midnight".
      *
      *
      * If FORMAT_CAP_MIDNIGHT is set and 12-hour time is used, then "Midnight"
      * is shown instead of "midnight".  You should probably not use this
      * flag because in many locales it will not make sense to capitalize
      * the term.
      *
      *
      * If FORMAT_12HOUR is set and the time is shown, then the time is
      * shown in the 12-hour time format. You should not normally set this.
      * Instead, let the time format be chosen automatically according to the
      * system settings. If both FORMAT_12HOUR and FORMAT_24HOUR are set, then
      * FORMAT_24HOUR takes precedence.
      *
      *
      * If FORMAT_24HOUR is set and the time is shown, then the time is
      * shown in the 24-hour time format. You should not normally set this.
      * Instead, let the time format be chosen automatically according to the
      * system settings. If both FORMAT_12HOUR and FORMAT_24HOUR are set, then
      * FORMAT_24HOUR takes precedence.
      *
      *
      * If FORMAT_UTC is set, then the UTC time zone is used for the start
      * and end milliseconds unless a time zone is specified. If a time zone
      * is specified it will be used regardless of the FORMAT_UTC flag.
      *
      *
      * If FORMAT_ABBREV_TIME is set and 12-hour time format is used, then the
      * start and end times (if shown) are abbreviated by not showing the minutes
      * if they are zero.  For example, instead of "3:00pm" the time would be
      * abbreviated to "3pm".
      *
      *
      * If FORMAT_ABBREV_WEEKDAY is set, then the weekday (if shown) is
      * abbreviated to a 3-letter string.
      *
      *
      * If FORMAT_ABBREV_MONTH is set, then the month (if shown) is abbreviated
      * to a 3-letter string.
      *
      *
      * If FORMAT_ABBREV_ALL is set, then the weekday and the month (if shown)
      * are abbreviated to 3-letter strings.
      *
      *
      * If FORMAT_NUMERIC_DATE is set, then the date is shown in numeric format
      * instead of using the name of the month.  For example, "12/31/2008"
      * instead of "December 31, 2008".
      *
      *
      * If the end date ends at 12:00am at the beginning of a day, it is
      * formatted as the end of the previous day in two scenarios:
      *   
          *   For single day events. This results in "8pm - midnight" instead of  
          *       "Nov 10, 8pm - Nov 11, 12am".  
          *   When the time is not displayed. This results in "Nov 10 - 11" for  
          *       an event with a start date of Nov 10 and an end date of Nov 12 at  
          *       00:00.  
          *
      *
      * @param context the context is required only if the time is shown
      * @param formatter the Formatter used for formatting the date range.
      * Note: be sure to call setLength(0) on StringBuilder passed to
      * the Formatter constructor unless you want the results to accumulate.
      * @param startMillis the start time in UTC milliseconds
      * @param endMillis the end time in UTC milliseconds
      * @param flags a bit mask of options
      * @param timeZone the time zone to compute the string in. Use null for local
      * or if the FORMAT_UTC flag is being used.
      *
      * @return the formatter with the formatted date/time range appended to the string buffer.
      */
     public static Formatter formatDateRange(Context context, Formatter formatter, long startMillis,
             long endMillis, int flags, String timeZone) {
         Resources res = Resources.getSystem();
         boolean showTime = (flags & FORMAT_SHOW_TIME) != 0;
         boolean showWeekDay = (flags & FORMAT_SHOW_WEEKDAY) != 0;
         boolean showYear = (flags & FORMAT_SHOW_YEAR) != 0;
         boolean noYear = (flags & FORMAT_NO_YEAR) != 0;
         boolean useUTC = (flags & FORMAT_UTC) != 0;
         boolean abbrevWeekDay = (flags & (FORMAT_ABBREV_WEEKDAY | FORMAT_ABBREV_ALL)) != 0;
         boolean abbrevMonth = (flags & (FORMAT_ABBREV_MONTH | FORMAT_ABBREV_ALL)) != 0;
         boolean noMonthDay = (flags & FORMAT_NO_MONTH_DAY) != 0;
         boolean numericDate = (flags & FORMAT_NUMERIC_DATE) != 0;

         // If we're getting called with a single instant in time (from
         // e.g. formatDateTime(), below), then we can skip a lot of
         // computation below that'd otherwise be thrown out.
         boolean isInstant = (startMillis == endMillis);

         Time startDate;
         if (timeZone != null) {
             startDate = new Time(timeZone);
         } else if (useUTC) {
             startDate = new Time(Time.TIMEZONE_UTC);
         } else {
             startDate = new Time();
         }
         startDate.set(startMillis);

         Time endDate;
         int dayDistance;
         if (isInstant) {
             endDate = startDate;
             dayDistance = 0;
         } else {
             if (timeZone != null) {
                 endDate = new Time(timeZone);
             } else if (useUTC) {
                 endDate = new Time(Time.TIMEZONE_UTC);
             } else {
                 endDate = new Time();
             }
             endDate.set(endMillis);
             int startJulianDay = Time.getJulianDay(startMillis, startDate.gmtoff);
             int endJulianDay = Time.getJulianDay(endMillis, endDate.gmtoff);
             dayDistance = endJulianDay - startJulianDay;
         }

         if (!isInstant
             && (endDate.hour | endDate.minute | endDate.second) == 0
             && (!showTime || dayDistance <= 1)) {
             endDate.monthDay -= 1;
             endDate.normalize(true /* ignore isDst */);
         }

         int startDay = startDate.monthDay;
         int startMonthNum = startDate.month;
         int startYear = startDate.year;

         int endDay = endDate.monthDay;
         int endMonthNum = endDate.month;
         int endYear = endDate.year;

         String startWeekDayString = "";
         String endWeekDayString = "";
         if (showWeekDay) {
             String weekDayFormat = "";
             if (abbrevWeekDay) {
                 weekDayFormat = ABBREV_WEEKDAY_FORMAT;
             } else {
                 weekDayFormat = WEEKDAY_FORMAT;
             }
             startWeekDayString = startDate.format(weekDayFormat);
             endWeekDayString = isInstant ? startWeekDayString : endDate.format(weekDayFormat);
         }

         String startTimeString = "";
         String endTimeString = "";
         if (showTime) {
             String startTimeFormat = "";
             String endTimeFormat = "";
             boolean force24Hour = (flags & FORMAT_24HOUR) != 0;
             boolean force12Hour = (flags & FORMAT_12HOUR) != 0;
             boolean use24Hour;
             if (force24Hour) {
                 use24Hour = true;
             } else if (force12Hour) {
                 use24Hour = false;
             } else {
                 use24Hour = DateFormat.is24HourFormat(context);
             }
             if (use24Hour) {
                 startTimeFormat = endTimeFormat =
                     res.getString(com.android.internal.R.string.hour_minute_24);
             } else {
                 boolean abbrevTime = (flags & (FORMAT_ABBREV_TIME | FORMAT_ABBREV_ALL)) != 0;
                 boolean capAMPM = (flags & FORMAT_CAP_AMPM) != 0;
                 boolean noNoon = (flags & FORMAT_NO_NOON) != 0;
                 boolean capNoon = (flags & FORMAT_CAP_NOON) != 0;
                 boolean noMidnight = (flags & FORMAT_NO_MIDNIGHT) != 0;
                 boolean capMidnight = (flags & FORMAT_CAP_MIDNIGHT) != 0;

                 boolean startOnTheHour = startDate.minute == 0 && startDate.second == 0;
                 boolean endOnTheHour = endDate.minute == 0 && endDate.second == 0;
                 if (abbrevTime && startOnTheHour) {
                     if (capAMPM) {
                         startTimeFormat = res.getString(com.android.internal.R.string.hour_cap_ampm);
                     } else {
                         startTimeFormat = res.getString(com.android.internal.R.string.hour_ampm);
                     }
                 } else {
                     if (capAMPM) {
                         startTimeFormat = res.getString(com.android.internal.R.string.hour_minute_cap_ampm);
                     } else {
                         startTimeFormat = res.getString(com.android.internal.R.string.hour_minute_ampm);
                     }
                 }

                 // Don't waste time on setting endTimeFormat when
                 // we're dealing with an instant, where we'll never
                 // need the end point.  (It's the same as the start
                 // point)
                 if (!isInstant) {
                     if (abbrevTime && endOnTheHour) {
                         if (capAMPM) {
                             endTimeFormat = res.getString(com.android.internal.R.string.hour_cap_ampm);
                         } else {
                             endTimeFormat = res.getString(com.android.internal.R.string.hour_ampm);
                         }
                     } else {
                         if (capAMPM) {
                             endTimeFormat = res.getString(com.android.internal.R.string.hour_minute_cap_ampm);
                         } else {
                             endTimeFormat = res.getString(com.android.internal.R.string.hour_minute_ampm);
                         }
                     }

                     if (endDate.hour == 12 && endOnTheHour && !noNoon) {
                         if (capNoon) {
                             endTimeFormat = res.getString(com.android.internal.R.string.Noon);
                         } else {
                             endTimeFormat = res.getString(com.android.internal.R.string.noon);
                         }
                     } else if (endDate.hour == 0 && endOnTheHour && !noMidnight) {
                         if (capMidnight) {
                             endTimeFormat = res.getString(com.android.internal.R.string.Midnight);
                         } else {
                             endTimeFormat = res.getString(com.android.internal.R.string.midnight);
                         }
                     }
                 }

                 if (startDate.hour == 12 && startOnTheHour && !noNoon) {
                     if (capNoon) {
                         startTimeFormat = res.getString(com.android.internal.R.string.Noon);
                     } else {
                         startTimeFormat = res.getString(com.android.internal.R.string.noon);