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kotlinlang

Hey guys! I am trying to send an image from Android/iOS to the backend using ktor-client, which requires to convert the Image file into a ByteArray first. I can’t find a library that supports both Android and iOS. Is `expect/actual` the only way to handle this use case?

I'm doing something similar in my app using okio by reading the files on Android and macOS as input streams and handing them over to ktor as raw bytes.

I am uploading files with ByteArray. From android side I am using `file?.readBytes()` and from iOS
```let intArray : [Int8] = bytesToSend
      .map { Int8(bitPattern: $0) }
let kotlinByteArray: KotlinByteArray = KotlinByteArray.init(size: Int32(bytesToSend.count))
    for (index, element) in intArray.enumerated() {
      kotlinByteArray.set(index: Int32(index), value: element)
    }```


I found that `okio` has an alpha release which includes a multiplatform `FileSystem` . It can decode a file into ByteArray on Android. While I have not tried it on iOS.