Custom MimeType not working

[CarterVE]

I'm not sure if I'm doing something wrong, but I can't get the custom MimeType to work on iOS. Is this supported/if so are there specific things I need to do to get a file with a custom MimeType to export? I am using the MimeType.custom with my own MimeType string, and even specified the export type in XCode.

Thanks!

[incrediblezayed]

Hey, can you share your code?

[CarterVE]

I can't share my exact code, but generally I use:

await FileSaver.instance.saveAs(
  name: name,
  bytes: data,
  ext: "xyz",
  mimeType: MimeType.custom,
  customMimeType: "application/exampleName"
);

[CarterVE]

Hopefully that's useful? I'm not sure if the customMimeType String needs to follow a specific pattern or something

[incrediblezayed]

As per your code, you are correct, but can you atleast tell me the mimeType which you are using? and is it working fine on android?

[CarterVE]

I'm not sure if it's working correctly on Android either, I can test that now. I'm trying to create a truly custom MimeType, so it's not one that currently exists, but the file itself is a JSON that is compressed using LZString (with a custom extension). Does it need to be a public MimeType? I'm pretty sure it should conform to public.content/public.data if that matters

[CarterVE]

As far as I can tell it's not working on Android either, for both when I export the file and check using file -b --mime-type <FILE-NAME> it says the MimeType is application/octet-stream (which as I understand it means the MimeType is unknown)

[incrediblezayed]

I'm not sure if it needs to be a public mimeType, I'll check on some random mimeType and get back to you tomorrow, if possible can you join discord and remind me tomorrow? I'm working on something urgent right now.

[CarterVE]

Absolutely this is not urgent, tomorrow is great!

[incrediblezayed]

Thank You so much