根据一周的开始时间获取每月的几周

尝试

calendar.setFirstDayOfWeek(Calendar.MONDAY); //sets first day to monday, for example.

在您的情况下，您可能需要执行以下操作：

public int getWeeksOfMonth(int year, int month, int weekStart) {     Calendar calendar = Calendar.getInstance();      calendar.set(Calendar.MONTH, month-1);    calendar.set(Calendar.YEAR, year);    calendar.setFirstDayOfWeek(weekStart);    int numOfWeeksInMonth = calendar.getActualMaximum(Calendar.WEEK_OF_MONTH);    return numOfWeeksInMonth;}

并用诸如

int weeks = getWeeksOfMonth(2012, 5, Calendar.WEDNESDAY);