我有問題與java Date
類型。爲什麼在我的代碼days
和days1
都等於88?Android(Java)GregorianCalendar的奇怪行爲
GregorianCalendar dateNow = new GregorianCalendar(2014,03,31);
GregorianCalendar dateFirstDay = new GregorianCalendar(2014,01,01);
long diffInMillies = dateNow. getTimeInMillis() - dateFirstDay. getTimeInMillis();
int days = (int) (diffInMillies/(1000*60*60*24));
GregorianCalendar dateNow1 = new GregorianCalendar(2014,04,01);
GregorianCalendar dateFirstDay1 = new GregorianCalendar(2014,01,01);
long diffInMillies1 = dateNow1. getTimeInMillis() - dateFirstDay1. getTimeInMillis();
int days1 = (int) (diffInMillies1/(1000*60*60*24));
(順便說一句,你意識到你發現「4月31日」和2月1日之間的區別,對吧?在日曆中以月份爲基準...) –