java - 如何获取特定周内特定日期的日期

Question

我想获取特定周中特定日期的日期，由周数标识。

这是一个例子:

今天是星期一 (03.10.2016)，本周是数字 58。现在我想获取例如的日期这周的星期五。

我在 Android 应用程序中使用 Joda-Time。

当前我正在创建一个 LocalDate。

    // This is the date of today
private LocalDate reportDate = new LocalDate();

// The number of the week is calculated here
int week = Weeks.weeksBetween(startDate.dayOfWeek().withMinimumValue().minusDays(1),
        reportDate.dayOfWeek().withMaximumValue().plusDays(1)).getWeeks();

switch(day_of_week) {
    case "Monday":
        // Get date of this day in current week
        break;
    case "Tuesday":
        // Get date of this day in current week
        break;
    // ...

Answer 1

您可以使用以下代码来实现所需的天数，

    LocalDateTime yourDate = LocalDateTime.now();
    System.out.println(yourDate.getWeekOfWeekyear());
    int weekOfyear = yourDate.getWeekOfWeekyear();
    //Fetch Week Start Date for Given Week Number
    DateTime weekStartDate = new DateTime().withWeekOfWeekyear(weekOfyear);
    System.out.println(weekStartDate.toString());
    //Fetch Specific Days for given week
    DateTime wedDateTime = weekStartDate.withDayOfWeek(DateTimeConstants.WEDNESDAY);

我希望这能回答您的问题。