androidkotlinuri

Uri lacks 'file' scheme while converting Uri to File

Primarily, I want to clarify that this isn't a duplicate. I've gone through every question on Stack Overflow that has a similar topic but couldn't find a solution. I've also gone through the documentation, which doesn't specifically mention this issue.

I'm trying to convert a Uri to a File using .toFile() in Kotlin; however, it throws an error that says:

java.lang.IllegalArgumentException: Uri lacks 'file' scheme: content://com.android.externalstorage.documents/document/primary%3Asample.txt
         at androidx.core.net.UriKt.toFile(Uri.kt:43)

I've accessed the file through the file picker, and I've also requested READ_EXTERNAL_STORAGE. Although the file can be picked, it throws the error I mentioned above. The code for accessing the file looks like this:

 val activityResultLauncher =
        rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) { uri: Uri? ->
            val file = uri?.toFile()
            if (file != null) {
                Log.d("data file", file.readText())
            }
        }

How can I fix this?

Thank you.

Solution

  • Well, if anyone is still stuck with the same problem, you can try this code:

     val activityResultLauncher =
        rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) { uri: Uri? ->
            val file = createTempFile()
            uri?.let { context.contentResolver.openInputStream(it) }.use { input ->
                file.outputStream().use { output ->
                    input?.copyTo(output)
                }
            }
            Log.d("txt content", file.readText())
            file.delete()
        }

    For more context: https://stackoverflow.com/a/49221353/22091687