I am using ```Image.makeFromEncoded(this).toComposeImageBitmap()``` Is there a way to get a mutable ...

# multiplatform

[Roger Kreienbühl]

I am using

Image.makeFromEncoded(this).toComposeImageBitmap()

Is there a way to get a mutable ImageBitmap instead of immutable one?
I try to draw this on a Canvas and always get the error kotlin.IllegalArgumentException: Cannot draw on immutable ImageBitmap

[mohamed rejeb]

You also create your own custom Image.toBitmap method to create a mutable Bitmap, follow the same Compose internal implementation and remove the line where they are setting the bitmap to be immutable.
And then you will have something like this:

image.toMutableBitmap().asComposeImageBitmap()

[mohamed rejeb]

https://github.com/JetBrains/compose-multiplatform-core/blob/0e58ebfd555d7e877c8e6[…]ain/kotlin/androidx/compose/ui/graphics/SkiaImageAsset.skiko.kt

[Roger Kreienbühl]

Thanks for the answer. this seems to work.
I tried to work with Bitmap directly, but android Bitmap and skia Bitmap aren’t compatible as type when using in common code (I am relatively new to kotlin multiplatform).

[mohamed rejeb]

Nice, using asComposeImageBitmap on the Bitmap should keep it mutable so you can have the compose ImageBitmap that you can use in common.
Let me know if you still have any issues.