Android 下一个生日的剩余天数和下一个生日的当天

有人能帮我计算下一个生日的剩余天数吗？请看下面的表格

例如，要获取一周中的某一天，您需要键入：

Calendar daymonthyear = Calendar.getInstance();
daymonthyear.set(birthdayYear, birthdayMonth, birthdayDay);
int dayOfTheWeek = daymonthyear.get(Calendar.DAY_OF_WEEK);

编辑：剩余天数通过简单减去当前日期/月份/年份和生日日期/月份/年份值获得。但是，请注意不要在公式中留下负值

添加以下导入：

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;



    final String strBDay = "2014/04/07";//"1990/04/07"; // Next Birtday date
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
    Date dt = null;
    try
    {
        dt = sdf.parse(strBDay);
    }
    catch (final java.text.ParseException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    final Calendar BDay = Calendar.getInstance();
    BDay.setTime(dt);

    final Calendar today = Calendar.getInstance();

    // Result in millis
    final long millis = BDay.getTimeInMillis() - today.getTimeInMillis();

    // Convert to days
    final long days = millis / 86400000; // Precalculated (24 * 60 * 60 * 1000)

    sdf = new SimpleDateFormat("EEEE");
    sdf.format(dt);

    System.out.println("Left days to bday: " + days);
    System.out.println("It will be       : " + days);

输出：

12-14 16:23:08.811:I/System.out5253:B日剩余天数：113 12-14 16:23:08.811:I/System.out5253:将是：星期一

[使用D.O.B.的版本]

如果你想用你的出生日期：

    final String strBDay = "1990/04/07";//"1990/04/07"; // Next Birtday date
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
    Date dt = null;
    try
    {
        dt = sdf.parse(strBDay);
    }
    catch (final java.text.ParseException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    final Calendar BDay = Calendar.getInstance();
    BDay.setTime(dt);

    final Calendar today = Calendar.getInstance();

    // Take your DOB Month and compare it to current month
    final int BMonth = BDay.get(Calendar.MONTH);
    final int CMonth = today.get(Calendar.MONTH);
    BDay.set(Calendar.YEAR, today.get(Calendar.YEAR));
    if(BMonth <= CMonth)
    {
        BDay.set(Calendar.YEAR, today.get(Calendar.YEAR) + 1);
    }

    // Result in millis
    final long millis = BDay.getTimeInMillis() - today.getTimeInMillis();

    // Convert to days
    final long days = millis / 86400000; // Precalculated (24 * 60 * 60 * 1000)

    sdf = new SimpleDateFormat("EEEE");
    //final String dayOfTheWeek = sdf.format(BDay.getTime());
    final String dayOfTheWeek = sdf.format(dt);

    System.out.println("Left days to bday: " + days);
    System.out.println("It will be       : " + dayOfTheWeek);

输出：

12-14 16:48:11.801:I/System.out5342:B日剩余天数：113

---

12-14 16:48:11.801:I/System.out5342:将是：星期一

谢谢你。。。。。我成功地获得了第二天，但是下一个生日的剩余天数呢？我用1990/04/07的生日检查了它，而不是剩余114天，它给了我8652天的生日…请帮助我更新我的代码见。请接受。请注意，您必须填写您未来的生日，而不是您的出生日期。不管怎样，从你的出生日期开始计算并不难。我添加了另一个版本，让你使用你的出生日期，即自动计算你未来的生日。