如何在android中将时间转换为"time ago"

Question

我的服务器.它的返回时间:

"2016-01-24T16:00:00.000Z"

我想要

1:转换为String.

2:我希望它从服务器加载时显示"time ago".

请.帮我!

Answer 1

我主要看三种方式:

a)使用SimpleDateFormat和DateUtils的内置选项

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
sdf.setTimeZone(TimeZone.getTimeZone("GMT"));
long time = sdf.parse("2016-01-24T16:00:00.000Z").getTime();
long now = System.currentTimeMillis();

CharSequence ago = 
  DateUtils.getRelativeTimeSpanString(time, now, DateUtils.MINUTE_IN_MILLIS);

b)外部库ocpsoft/PrettyTime(基于java.util.Date)

在这里,你必须使用SimpleDateFormat,也产生time-result作为解释"2016-01-24T16:00:00.000Z".

PrettyTime prettyTime = new PrettyTime(Locale.getDefault());
String ago = prettyTime.format(new Date(time));

c)使用我的库Time4A(重量级但具有最佳的i18n支持)

Moment moment = Iso8601Format.EXTENDED_DATE_TIME_OFFSET.parse("2016-01-24T16:00:00.000Z");
String ago = PrettyTime.of(Locale.getDefault()).printRelativeInStdTimezone(moment);

Answer 2

1 - 创建日期格式化程序:

public static final SimpleDateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");

2 - 创建Date对象

String dateStr = "2016-01-24T16:00:00.000Z";
Date date = inputFormat.parse(dateStr);

3 - 使用Android DateUtils创建一个漂亮的显示字符串:

String niceDateStr = DateUtils.getRelativeTimeSpanString(date.getTime() , Calendar.getInstance().getTimeInMillis(), DateUtils.MINUTE_IN_MILLIS);

Answer 3

这很简单.我会告诉你我的代码.

package com.example;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.TimeUnit;

public class TimeShow
{
    public static void main(String[] args) {
        try 
        {
            SimpleDateFormat format = new SimpleDateFormat("yyyy.MM.dd G 'at' HH:mm:ss");
            Date past = format.parse("2016.02.05 AD at 23:59:30");
            Date now = new Date();
            long seconds=TimeUnit.MILLISECONDS.toSeconds(now.getTime() - past.getTime());
            long minutes=TimeUnit.MILLISECONDS.toMinutes(now.getTime() - past.getTime());
            long hours=TimeUnit.MILLISECONDS.toHours(now.getTime() - past.getTime());
            long days=TimeUnit.MILLISECONDS.toDays(now.getTime() - past.getTime());
//
//          System.out.println(TimeUnit.MILLISECONDS.toSeconds(now.getTime() - past.getTime()) + " milliseconds ago");
//          System.out.println(TimeUnit.MILLISECONDS.toMinutes(now.getTime() - past.getTime()) + " minutes ago");
//          System.out.println(TimeUnit.MILLISECONDS.toHours(now.getTime() - past.getTime()) + " hours ago");
//          System.out.println(TimeUnit.MILLISECONDS.toDays(now.getTime() - past.getTime()) + " days ago");

            if(seconds<60)
            {
                System.out.println(seconds+" seconds ago");
            }
            else if(minutes<60)
            {
                System.out.println(minutes+" minutes ago");
            }
            else if(hours<24)
            {
                System.out.println(hours+" hours ago");
            }
            else 
            {
                System.out.println(days+" days ago");
            }
        }
        catch (Exception j){
            j.printStackTrace();
        }
    }
}

Answer 4

在Android中,您可以使用DateUtils.getRelativeTimeSpanString(long timeInMillis),参考https://developer.android.com/reference/android/text/format/DateUtils.html,您可以使用该方法的一种变体来提高准确性.

Answer 5

科特林版

private const val SECOND_MILLIS = 1000
private const val MINUTE_MILLIS = 60 * SECOND_MILLIS
private const val HOUR_MILLIS = 60 * MINUTE_MILLIS
private const val DAY_MILLIS = 24 * HOUR_MILLIS

private fun currentDate(): Date {
    val calendar = Calendar.getInstance()
    return calendar.time
}

fun getTimeAgo(date: Date): String {
    var time = date.time
    if (time < 1000000000000L) {
        time *= 1000
    }

    val now = currentDate().time
    if (time > now || time <= 0) {
        return "in the future"
    }

    val diff = now - time
    return when {
        diff < MINUTE_MILLIS -> "moments ago"
        diff < 2 * MINUTE_MILLIS -> "a minute ago"
        diff < 60 * MINUTE_MILLIS -> "${diff / MINUTE_MILLIS} minutes ago"
        diff < 2 * HOUR_MILLIS -> "an hour ago"
        diff < 24 * HOUR_MILLIS -> "${diff / HOUR_MILLIS} hours ago"
        diff < 48 * HOUR_MILLIS -> "yesterday"
        else -> "${diff / DAY_MILLIS} days ago"
    }
}

Answer 6

最简单的方法

对于 Kotlin（时间以毫秒为单位）

private const val SECOND = 1
private const val MINUTE = 60 * SECOND
private const val HOUR = 60 * MINUTE
private const val DAY = 24 * HOUR
private const val MONTH = 30 * DAY
private const val YEAR = 12 * MONTH

private fun currentDate(): Long {
    val calendar = Calendar.getInstance()
    return calendar.timeInMillis
}

// Long: time in millisecond
fun Long.toTimeAgo(): String {
    val time = this
    val now = currentDate()

    // convert back to second
    val diff = (now - time) / 1000

    return when {
        diff < MINUTE -> "Just now"
        diff < 2 * MINUTE -> "a minute ago"
        diff < 60 * MINUTE -> "${diff / MINUTE} minutes ago"
        diff < 2 * HOUR -> "an hour ago"
        diff < 24 * HOUR -> "${diff / HOUR} hours ago"
        diff < 2 * DAY -> "yesterday"
        diff < 30 * DAY -> "${diff / DAY} days ago"
        diff < 2 * MONTH -> "a month ago"
        diff < 12 * MONTH -> "${diff / MONTH} months ago"
        diff < 2 * YEAR -> "a year ago"
        else -> "${diff / YEAR} years ago"
    }
}

Answer 7

使用@Excelso_Widi代码，我能够克服

我修改了他的代码，还翻译成英文。

public class TimeAgo2 {

    public String covertTimeToText(String dataDate) {

        String convTime = null;

        String prefix = "";
        String suffix = "Ago";

        try {
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
            Date pasTime = dateFormat.parse(dataDate);

            Date nowTime = new Date();

            long dateDiff = nowTime.getTime() - pasTime.getTime();

            long second = TimeUnit.MILLISECONDS.toSeconds(dateDiff);
            long minute = TimeUnit.MILLISECONDS.toMinutes(dateDiff);
            long hour   = TimeUnit.MILLISECONDS.toHours(dateDiff);
            long day  = TimeUnit.MILLISECONDS.toDays(dateDiff);

            if (second < 60) {
                convTime = second+" Seconds "+suffix;
            } else if (minute < 60) {
                convTime = minute+" Minutes "+suffix;
            } else if (hour < 24) {
                convTime = hour+" Hours "+suffix;
            } else if (day >= 7) {
                if (day > 360) {
                    convTime = (day / 30) + " Years " + suffix;
                } else if (day > 30) {
                    convTime = (day / 360) + " Months " + suffix;
                } else {
                    convTime = (day / 7) + " Week " + suffix;
                }
            } else if (day < 7) {
                convTime = day+" Days "+suffix;
            }

        } catch (ParseException e) {
            e.printStackTrace();
            Log.e("ConvTimeE", e.getMessage());
        }

        return convTime;
    }

}

我这样用

 String time = jsonObject.getString("date_gmt");
 TimeAgo2 timeAgo2 = new TimeAgo2();
String MyFinalValue = timeAgo2.covertTimeToText(time);

快乐编码和感谢@Excelso_Widi你的人眼色

Answer 8

private static final int SECOND_MILLIS = 1000;
private static final int MINUTE_MILLIS = 60 * SECOND_MILLIS;
private static final int HOUR_MILLIS = 60 * MINUTE_MILLIS;
private static final int DAY_MILLIS = 24 * HOUR_MILLIS;

private static Date currentDate() {
    Calendar calendar = Calendar.getInstance();
    return calendar.getTime();
}

public static String getTimeAgo(Date date) {
    long time = date.getTime();
    if (time < 1000000000000L) {
        time *= 1000;
    }

    long now = currentDate().getTime();
    if (time > now || time <= 0) {
        return "in the future";
    }

    final long diff = now - time;
    if (diff < MINUTE_MILLIS) {
        return "moments ago";
    } else if (diff < 2 * MINUTE_MILLIS) {
        return "a minute ago";
    } else if (diff < 60 * MINUTE_MILLIS) {
        return diff / MINUTE_MILLIS + " minutes ago";
    } else if (diff < 2 * HOUR_MILLIS) {
        return "an hour ago";
    } else if (diff < 24 * HOUR_MILLIS) {
        return diff / HOUR_MILLIS + " hours ago";
    } else if (diff < 48 * HOUR_MILLIS) {
        return "yesterday";
    } else {
        return diff / DAY_MILLIS + " days ago";
    }
}

只需调用getTimeAgo（timeInDate）;

它为我工作。

Answer 9

对于 kotlin，您可以使用此扩展功能。

fun Date.getTimeAgo(): String {
    val calendar = Calendar.getInstance()
    calendar.time = this

    val year = calendar.get(Calendar.YEAR)
    val month = calendar.get(Calendar.MONTH)
    val day = calendar.get(Calendar.DAY_OF_MONTH)
    val hour = calendar.get(Calendar.HOUR_OF_DAY)
    val minute = calendar.get(Calendar.MINUTE)

    val currentCalendar = Calendar.getInstance()

    val currentYear = currentCalendar.get(Calendar.YEAR)
    val currentMonth = currentCalendar.get(Calendar.MONTH)
    val currentDay = currentCalendar.get(Calendar.DAY_OF_MONTH)
    val currentHour = currentCalendar.get(Calendar.HOUR_OF_DAY)
    val currentMinute = currentCalendar.get(Calendar.MINUTE)

    return if (year < currentYear ) {
        val interval = currentYear - year
        if (interval == 1) "$interval year ago" else "$interval years ago"
    } else if (month < currentMonth) {
        val interval = currentMonth - month
        if (interval == 1) "$interval month ago" else "$interval months ago"
    } else  if (day < currentDay) {
        val interval = currentDay - day
        if (interval == 1) "$interval day ago" else "$interval days ago"
    } else if (hour < currentHour) {
        val interval = currentHour - hour
        if (interval == 1) "$interval hour ago" else "$interval hours ago"
    } else if (minute < currentMinute) {
        val interval = currentMinute - minute
        if (interval == 1) "$interval minute ago" else "$interval minutes ago"
    } else {
        "a moment ago"
    }
}

// To use it
val timeAgo = someDate.getTimeAgo()

Answer 10

您尝试转换的是ISO 8601兼容格式。最简单的转换方法是使用Android 版Joda-Time 库。

将其添加到项目后，您可以使用此代码来提取确切的日期！

    DateTimeZone timeZone = DateTimeZone.getDefault();
    DateTimeFormatter formatter = DateTimeFormat.forPattern("dd MMMM yyyy").withZone(timeZone);
    DateTime dateTime2 = new DateTime( isoDateToBeConverted, timeZone );
    String output = formatter.print( dateTime2 );
    Log.w("TIME IF WORKS::",""+output);

另外，请参阅此内容以您喜欢的方式格式化日期希望它有帮助！