Opening ICS files in iOS: 'This invitation data is out of date'

[TomMahle]

When opening a .ics file (ical) iOS calendar will say "This invitation data is out of date". The same file will add to the calendar successfully from the mail app or when accessed from Safari. I'm not positive this issue is from this library, or if it's a problem with Calendar/iOS, so I have also opened a support ticket with Apple outlining it. I will update here with feedback from them when I get it.

• please provide the version of installed library and RN project.
  "react-native": "0.53.3",
  "rn-fetch-blob": "^0.10.11",

• a sample code snippet/repository is very helpful to spotting the problem.
  Note, you'll need to put a .ics file into some location you can access first. This problem is the same in simulator or iOS, so my recommended approach would be to use simulator, get the directory using console.warn or similar, then drop a file there, here's one off meetup that would work (from this event https://www.meetup.com/JavaScriptMN/events/sthlplyxnbpc/): https://www.meetup.com/JavaScriptMN/events/248436379/ical/Monthly+Meet+Up.ics

    const dir = RNFetchBlob.fs.dirs.DocumentDir + '/blah.ics';
    RNFetchBlob.ios.openDocument(dir);

[Traviskn]

Interesting, I wonder if there is some other way that we need to open an ics file on iOS to get the system to handle it correctly

[TomMahle]

That could very well be the case. As an update on the bug report, Apple has marked my bug as a duplicate which means I cannot see any of the resolution information regarding the duplicate case they have decided to work on.

[TomMahle]

I've made a post here to see if anyone on the apple dev forum has any insight: https://forums.developer.apple.com/message/321334#321334