Hi there i m not able to add exact import for `File` can som kotlinlang #ktor

Suresh Maidaragi

11/16/2023, 11:47 AM

Hi there, i'm not able to add exact import for

File

, can someone help to check what we have missed, for this below import still we are seeing error

import io.ktor.http.ContentDisposition.Companion.File

jamshedalamqaderi

11/16/2023, 11:48 AM

You need to import from

java.nio

Aleksei Tirman [JB]

11/16/2023, 11:49 AM

What platform do you write your code for (JVM, nix, darwin, etc)?

Suresh Maidaragi

11/16/2023, 11:50 AM

Kotlin multiplatform for iOS and Android

probably JVM

jamshedalamqaderi

11/16/2023, 11:51 AM

are you trying to access it from shared module?

Suresh Maidaragi

11/16/2023, 11:52 AM

jamshedalamqaderi

11/16/2023, 11:52 AM

then you need to create an actual/expect function to read file as bytearray in androidMain and iosMain

Suresh Maidaragi

11/16/2023, 4:59 PM

Thanks a lot @jamshedalamqaderi for quick response, it saved my time

I created the actual and expected as below but when I run iOS build for this code it showing build error,

//androidmain

actual class FileUtils actual constructor() {
     actual fun readFileAsByteArray(filePath: String): ByteArray {
        val file = File(filePath)
        return file.readBytes()
    }
}

///commonMain
expect class FileUtils() {
     fun readFileAsByteArray(filePath: String): ByteArray
}

//iosMain

actual  class FileUtils actual constructor(){
    actual fun readFileAsByteArray(filePath: String): ByteArray {
        val fileURL = NSURL.fileURLWithPath(filePath)
        val data = NSData.dataWithContentsOfURL(fileURL)
        return data?.toByteArray() ?: ByteArray(0)
    }

    @OptIn(ExperimentalForeignApi::class)
    private fun NSData.toByteArray(): ByteArray {
        val length = this.length.toInt()
        val bytes = ByteArray(length)
        this.getBytes(bytes)
        return bytes
    }
}

here is the build error

jamshedalamqaderi

11/17/2023, 8:35 AM

val b = ByteArray(d.length.toInt()).apply {
        usePinned {
                memcpy(it.addressOf(0), d.bytes, d.length)
        }
  }