如何在Flutter中像Youtube一样显示时间

Question

我正在编写一个 flutter 应用程序以使用 Youtube API V3.

克隆一些 Youtube 功能

该应用从 youtube 视频 API

中获取 视频时间戳作为字符串

每个时间戳的格式如下：

YYYY-MM-DDTHH:MM:SSZ

一个例子是：

2020-07-12T20:42:19Z

我想用文字显示:

1 小时
1 小时前
4 周前
11 个月前
1 年前
...

Answer 1

您可以使用 timeago 包

下面的示例代码

import 'package:timeago/timeago.dart' as timeago;

main() {
    final fifteenAgo = new DateTime.now().subtract(new Duration(minutes: 15));

    print(timeago.format(fifteenAgo)); // 15 minutes ago
    print(timeago.format(fifteenAgo, locale: 'en_short')); // 15m
    print(timeago.format(fifteenAgo, locale: 'es')); // hace 15 minutos
}

要将其与 YYYY-MM-DDTHH:MM:SSZ 时间格式一起使用，您可以将 String 转换为 DateTime，然后对 DateTime 变量执行操作

DateTime time = DateTime.parse("2020-07-12T20:42:19Z");
print(timeago.format(time));

Answer 2

我在字符串上创建了一个扩展

 extension StringExtension on String {
  static String displayTimeAgoFromTimestamp(String timestamp) {
    final year = int.parse(timestamp.substring(0, 4));
    final month = int.parse(timestamp.substring(5, 7));
    final day = int.parse(timestamp.substring(8, 10));
    final hour = int.parse(timestamp.substring(11, 13));
    final minute = int.parse(timestamp.substring(14, 16));

    final DateTime videoDate = DateTime(year, month, day, hour, minute);
    final int diffInHours = DateTime.now().difference(videoDate).inHours;

    String timeAgo = '';
    String timeUnit = '';
    int timeValue = 0;

    if (diffInHours < 1) {
      final diffInMinutes = DateTime.now().difference(videoDate).inMinutes;
      timeValue = diffInMinutes;
      timeUnit = 'minute';
    } else if (diffInHours < 24) {
      timeValue = diffInHours;
      timeUnit = 'hour';
    } else if (diffInHours >= 24 && diffInHours < 24 * 7) {
      timeValue = (diffInHours / 24).floor();
      timeUnit = 'day';
    } else if (diffInHours >= 24 * 7 && diffInHours < 24 * 30) {
      timeValue = (diffInHours / (24 * 7)).floor();
      timeUnit = 'week';
    } else if (diffInHours >= 24 * 30 && diffInHours < 24 * 12 * 30) {
      timeValue = (diffInHours / (24 * 30)).floor();
      timeUnit = 'month';
    } else {
      timeValue = (diffInHours / (24 * 365)).floor();
      timeUnit = 'year';
    }

    timeAgo = timeValue.toString() + ' ' + timeUnit;
    timeAgo += timeValue > 1 ? 's' : '';

    return timeAgo + ' ago';
  }
}

然后拨打短信：

StringExtension.displayTimeAgoFromTimestamp(video.timestamp)

如何在Flutter中像Youtube一样显示时间

How to display time ago like Youtube in Flutter

youtube-api

datetime-format

flutter