How to get date 7 days ago to today in Kotlin?

Question

I want to get date from 7 days ago to today in Kotlin. Any suggestions? This is what I have so far

val date = Calendar.getInstance()

val yesterday = Calendar.getInstance()

yesterday.add(Calendar.DATE,-1)

var todayOrYesterday:String?

var todayDate = date.time

while (todayDate > yesterday.time){

    val formatter = SimpleDateFormat("EEEE, d MMMM yyyy")

    val format = formatter.format(todayDate)

    println(format)

    todayOrYesterday = if (DateUtils.isToday(date.timeInMillis)) {
            "Today"
    }else "Yesterday"

    date.add(Calendar.DATE,-7)
}

please can you check https://stackoverflow.com/help/how-to-ask — Prags, Jan 19 '18 at 06:36
This is a reference link for your problem https://stackoverflow.com/questions/3747490/android-get-date-before-7-days-one-week — Vatsal Desai, Jan 19 '18 at 06:50
This has been addressed many times already. Search Stack Overflow before posting. Hints: `java.time.LocalDate.now().minusWeeks( 1 )`, *ThreeTen-Backport*, *ThreeTenABP*. — Basil Bourque, Jan 19 '18 at 21:16

score 53 · Accepted Answer · edited Jan 19 '18 at 07:52

53

Use this function, pass the days ago you want:

fun getDaysAgo(daysAgo: Int): Date {
    val calendar = Calendar.getInstance()
    calendar.add(Calendar.DAY_OF_YEAR, -daysAgo)

    return calendar.time
}

edited Jan 19 '18 at 07:52

Alex Romanov

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answered Jan 19 '18 at 07:04

Thamsanqa Mahlaola

688
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9

score 13 · Answer 2 · answered Jan 19 '18 at 06:58

13

Simply use,

val date = Calendar.getInstance()   // 19-01-2018
date.add(Calendar.DATE, -7)         // 12-01-2018

answered Jan 19 '18 at 06:58

Bhavesh Desai

753
4
20

1

This troublesome old Class is now legacy, supplanted by the *java.time* classes. For older Android see the ThreeTen-Backport and ThreeTenABP projects. – Basil Bourque Jan 19 '18 at 20:48

score 0 · Answer 3 · answered Jan 19 '18 at 08:04

0

An alternative is to use Joda Time (Joda Time for Android). This library has a really nice API.

DateTime.now().minusDays(7)

And you can call .toDate() if you need a Java-Date object.

Link: Why Joda Time?

answered Jan 19 '18 at 08:04

Kevin Robatel

8,025
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The Joda-Time project is now in maintenance mode, with the team advising migration to the *java.time* classes. For earlier Android see the *ThreeTen-Backport* and *ThreeTenABP* projects. – Basil Bourque Jan 19 '18 at 20:47

How to get date 7 days ago to today in Kotlin?

3 Answers3