Android 日期顯示格式 Date Format

參考： http://null-point.iteye.com/blog/1591896

        用aChartEngine畫TimeChart的時，橫坐標的日期顯示格式很多樣。下面這些例子加上一些變通基本上涵蓋了所有的格式：

“

• For the month of September:
• M -> 9
• MM -> 09
• MMM -> Sep
• MMMM -> September

• For 7 minutes past the hour:
• m -> 7
• mm -> 07
• mmm -> 007
• mmmm -> 0007

• Examples for April 6, 1970 at 3:23am:
• "MM/dd/yy h:mmaa" -> "04/06/70 3:23am"
• "MMM dd, yyyy h:mmaa" -> "Apr 6, 1970 3:23am"
• "MMMM dd, yyyy h:mmaa" -> "April 6, 1970 3:23am"
• "E, MMMM dd, yyyy h:mmaa" -> "Mon, April 6, 19703:23am&
• "EEEE, MMMM dd, yyyy h:mmaa" -> "Monday, April 6, 1970 3:23am"
• "'Noteworthy day: 'M/d/yy" -> "Noteworthy day: 4/6/70"

”