this is a issue for learning android.
When I need some format time,Format class gives us three overloading static method which is format to
make date properly.

public static CharSequence format (CharSequence inFormat, Calendar inDate)
Given a format string and a Calendar object, returns a CharSequence containing the requested date.
public static CharSequence format (CharSequence inFormat, Date inDate)
Given a format string and a Date object, returns a CharSequence containing the requested date.
public static CharSequence format (CharSequence inFormat, long inTimeInMillis)
Given a format string and a time in milliseconds since Jan 1, 1970 GMT, returns a CharSequence containing the requested date.

this is my code in android
String date;
date=DateFormat.format("yyyy年mm月dd日,hh:mm",mCrime.getDate()).toString();
mDateButton.setText(date);

this is the code to view

additionally,we can define format on our own.
like this

"MM/dd/yy h:mmaa"
"MMM DD,YYY h:mmaa"
"mmmm dd,yyyy h:mmaa"
"e,mmmm dd,yyyy h:mmaa"
"eeee,mmmm dd,yyyy h:mmaa"
"yyyy年mm月dd日,kk:mm"

this is the table

字母 含义 示例
y Year 1996; 96 哪一年
M Month in year J uly;Jul; 07 一年中的哪一月
m Minute in hour 30 一个小时中的第几分钟
D Day in year 189 一年中的第几天
d Day in month 2 10 一个月中的第几天
H Hour in day ( 0- 23) 0 一天中的第几个小时（ 24小时制）
h Hour in am/pm ( 1- 12) 12 一天中上午、下午的第几个小时（ 12小时制）
S Millisecond 978 毫秒数
s Second in minute 55 一分钟的第几秒

the time I print is not the same as realtime.
I search for it,but I still can't find a way to solve it.
So ,I need more time to get the answer.