Hi I am relatively new to compose multiplatform an...

# multiplatform

[Roger Kreienbühl]

Hi
I am relatively new to compose multiplatform and have a problem with dependencies:
I added compose-ui = { group = "androidx.compose.ui", name = "ui", version.ref = "compose" } (compose version 1.6.2 as it is when generating a project on: https://kmp.jetbrains.com)

I added the dependency under commonMain.dependencies as implementation(libs.compose.ui) . Whe I try to build the android app, I get the following errors:

Unresolved reference: toComposeImageBitmap
Unresolved reference: toComposeImageBitmap
Unresolved reference: toComposeImageBitmap
Unresolved reference: drawImage

First error is on the import: import androidx.compose.ui.graphics.toComposeImageBitmap second and third are on usage.

The drawImage error is on

drawIntoCanvas {
    it.nativeCanvas.drawImage(Image.makeFromBitmap(bitmap), l.toFloat(), t.toFloat())
}

What am I doing wrong?

[Mats-Hjalmar]

I can use androidx.compose.ui.graphics.toComposeImageBitmap without that import.

[Mats-Hjalmar]

Not sure which one but these are my relevant imports that could contain it:

implementation(compose.runtime)
implementation(compose.material3)
implementation(compose.materialIconsExtended)
_@OptIn_(org.jetbrains.compose._ExperimentalComposeLibrary_::_class_)
implementation(compose.components.resources)

[Mats-Hjalmar]

Ohh wait i think you cant use Skiko APIs in the common / Android part of your code

[Roger Kreienbühl]

Ok, so I have to separate these into the platform code and use toComposeImageBitmap there?

[Mats-Hjalmar]

Yes, but to avoid too much duplicated code i would do the image parsing natively and use this interface in common

androidx.compose.ui.graphics.ImageBitmap

[Roger Kreienbühl]

Ok, thanks, that worked 🙂
on android implementation I have

actual fun Bitmap.toComposeImageBitmap(): ImageBitmap = this.toComposeImageBitmap()

and under desktop I have

actual fun Bitmap.toComposeImageBitmap(): ImageBitmap = Image.makeFromBitmap(this).toComposeImageBitmap()

[Mats-Hjalmar]

👍