Challenges with Sharing PKPass Files from Apple Wallet

[ylevanon]

After extensive experimentation with the expo-share-intent library to enable sharing boarding passes (PKPass files) from Apple Wallet to a React Native app, I've encountered some interesting challenges worth documenting.

The Challenge
While implementing a boarding pass import feature, I discovered that despite proper configuration, my app wouldn't appear in the iOS share sheet when attempting to share a boarding pass from Apple Wallet. Interestingly, the app would appear when sharing other file types, just not PKPass files.

Below is my expo-share-intent configuration in my app.json:

    "expo-share-intent",
    {
      "iosIsFileProvider": true,
      "iosActivationRules": {
        "NSExtensionActivationSupportsFileWithMaxCount": 1,
        "NSExtensionActivationRule": "SUBQUERY (extensionItems, $extensionItem, SUBQUERY ($extensionItem.attachments, $attachment, (ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO \"com.apple.pkpass\" || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO \"com.apple.pkpass-data\")).@count == 1).@count == 1"
      },
      "infoPlist": {
        "CFBundleDocumentTypes": [
          {
            "CFBundleTypeName": "Boarding Pass",
            "LSHandlerRank": "Alternate",
            "LSItemContentTypes": [
              "com.apple.pkpass",
              "com.apple.pkpass-data"
            ]
          }
        ]
      }
    }

Any help is appreciated!

[ylevanon]

I noticed pkpass was not an accepted mime type, maybe I can open an issue for this?

we can add this to the mimeTypes dictionary

"pkpass": "application/vnd.apple.pkpass",