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hoangtranwork/DateUtil.kt

Last active October 12, 2018 17:14
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Java/Kotlin DateTimeFormatter to parse Apple version of RFC3339 date returned by Apple API (Itune receipt)
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DateUtil.kt
val appleRfc3339DateFormatter: DateTimeFormatter =
DateTimeFormatterBuilder()
.appendValue(YEAR, 4).appendLiteral('-').appendValue(MONTH_OF_YEAR, 2).appendLiteral('-').appendValue(DAY_OF_MONTH, 2)
.appendLiteral(' ')
.appendValue(HOUR_OF_DAY, 2).appendLiteral(':').appendValue(MINUTE_OF_HOUR, 2).appendLiteral(':').appendValue(SECOND_OF_MINUTE, 2)
.appendLiteral(' ')
.appendZoneId()
.toFormatter()
val aRfc3339DateString = "2016-03-17 03:24:38 Etc/GMT"
val parsedDate = ZonedDateTime.parse(aRfc3339DateString, appleRfc3339DateFormatter).toDate()
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hoangtranwork commented Oct 12, 2018 •
edited

RFC3339 is so loose that it's better to make specialized parser for each vendor. In this case, Apple decides that their date should use space instead of T to separate the date and time part and no fraction seconds.

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Reference:

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