android 日期转为星期,Android获取系统当前日期及将日期转换成对应的星期

//获取当前日期

Calendar calendar = Calendar.getInstance();

Date date = calendar.getTime();

public static final int WEEKDAYS = 7;

public static String[] WEEK = {

“SUNDAY”,

“MONDAY”,

“TUESDAY”,

“WEDNESDAY",

”THRUSDAY",

“FRIDAY",

”SATURDAY

};

/**

* 日期变量转成对应的星期字符串

* @param date

* @return

*/

public static String DateToWeek(Date date) {

Calendar calendar = Calendar.getInstance();

calendar.setTime(date);

int dayIndex = calendar.get(Calendar.DAY_OF_WEEK);

if (dayIndex < 1 || dayIndex > WEEKDAYS) {

return null;

}

return WEEK[dayIndex - 1];

}

注意：int dayIndex = calendar.get(Calendar.DAY_OF_WEEK);返回的index， 周日是每周的第一天， index = 1