Android编程之短信列表的时间显示实例分析

 public static String formatTimeStampString(Context context, long when) { return formatTimeStampString(context, when, false); } public static String formatTimeStampString(Context context, long when, boolean fullFormat) { Time then = new Time(); then.set(when); Time now = new Time(); now.setToNow(); // Basic settings for formatDateTime() we want for all cases. int format_flags = DateUtils.FORMAT_NO_NOON_MIDNIGHT | DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_CAP_AMPM; // If the message is from a different year, show the date and year. if (then.year != now.year) { format_flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE; } else if (then.yearDay != now.yearDay) { // If it is from a different day than today, show only the date. format_flags |= DateUtils.FORMAT_SHOW_DATE; } else { // Otherwise, if the message is from today, show the time. format_flags |= DateUtils.FORMAT_SHOW_TIME; } // If the caller has asked for full details, make sure to show the date // and time no matter what we've determined above (but still make showing // the year only happen if it is a different year from today). if (fullFormat) { format_flags |= (DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_TIME); } return DateUtils.formatDateTime(context, when, format_flags); }