mime类型的.fb2文件

Question

文件打开一个文件选择器，但是我找不到MIME类型。

val launcher = rememberLauncherForActivityResult(
        contract = ActivityResultContracts.OpenDocument(),
        onResult = { uri ->
            handleEvent(ImportScreenEvent.Import(uri))
        }
    )

launcher.launch(
                        arrayOf(
                            "application/pdf",
                            "text/plain",
                            "application/epub+zip",
                            "text/fb2+xml",
                            "application/x-fb2",
                            "aapplication/x-zip-compressed-fb2",
                            "application/fb2+zip",
                            "application/fb2.zip",
                            "application/fb2",
                            "application/fictionbook2+zip",
                            "application/fictionbook3+zip"
                        )
                    )

根据wikipedia，后两个（

application/fictionbook2+zip

Answer 1

application/fictionbook3+zip

）是有效的MIME类型。但是，Android仅知道可能的MIME类型的一小部分及其文件扩展协会，要求该子集之外的MIME类型不起作用，并且会为您提供您在问题中看到的结果。您无能为力。