Question

我有一个问题，我尝试从网络服务显示日期，并显示所有日期，
例如"23 mai 2013 11:05:01 GMT" 我希望像这样展示"today at 9h30"，这就是我所做的：

public Date getDate() { 
        return pubdate;
    }

    public void setDate(String date) {
        SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            this.pubdate = fmt.parse(date);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

        TextView textedate= (TextView) view.findViewById(R.id.textArticleDate);
        txtArticleDate.setText(article.getDate().toGMTString());

我能做些什么才能像今天或昨天一样展示......？

Answer 1

好的，这只是一个例子......试试吧

 public class StackExampleDate {

Date pubdate;

public static void main(String[] args){
    try {
        setDate("23 mai 2013 11:05:01 GMT");
    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public Date getDate() { 
    return pubdate;
}

public static void setDate(String date) throws ParseException {
    //MMMM = Month as text , z = time zone, ' = character for text
    SimpleDateFormat fmt_in = new SimpleDateFormat("dd MMMM yyyy HH:mm:ss z");
    SimpleDateFormat fmt_out = new SimpleDateFormat("'at' H'h'mm");

    Date date_in = fmt_in.parse(date);
    String output_date_string = fmt_out.format(date_in);

    if(isToday(date_in)){
        System.out.println("today "+output_date_string);

    }else{
        System.out.println("Some day "+output_date_string);
    }
}

public static boolean isToday(Date date) {
    return isSameDay(date, Calendar.getInstance().getTime());
}

public static boolean isSameDay(Date date1, Date date2) {
    if (date1 == null || date2 == null) {
        throw new IllegalArgumentException("The dates must not be null");
    }
    Calendar cal1 = Calendar.getInstance();
    cal1.setTime(date1);
    Calendar cal2 = Calendar.getInstance();
    cal2.setTime(date2);
    return isSameDay(cal1, cal2);
}

public static boolean isSameDay(Calendar cal1, Calendar cal2) {
    if (cal1 == null || cal2 == null) {
        throw new IllegalArgumentException("The dates must not be null");
    }
    return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
            cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
            cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
    }
}

//如果结果时间不是您给定的时间..请查看您的时区GMT + n

Answer 2

使用SimpleDateFormat类，您无法在今天或昨天显示。您必须使用字符串操作并获取日期，年份并与系统日期，年份进行比较并创建自己的字符串。

获取系统日期 - Calendar.getInstance().get(Calendar.DATE);

Answer 3

你需要第二个dateformater ..例如

 String strDate = "12/12/07";

try
{
  //create SimpleDateFormat object with source string date format
  SimpleDateFormat sdfSource = new SimpleDateFormat("dd/MM/yy");

  //parse the string into Date object
  Date date = sdfSource.parse(strDate);

  //create SimpleDateFormat object with desired date format
  SimpleDateFormat sdfDestination = new SimpleDateFormat("MM-dd-yyyy hh:mm:ss");

  //parse the date into another format
  strDate = sdfDestination.format(date);

  System.out.println("Date is converted from dd/MM/yy format to MM-dd-yyyy hh:mm:ss");
  System.out.println("Converted date is : " + strDate);

}
catch(ParseException pe)
{
  System.out.println("Parse Exception : " + pe);
}

和“今天”之类的东西比如if（date == today）比显示字符串“today at”，而不是缩短完整日期..

显示来自json的日期没有所有标题

3 个答案: