I created custom button with coil. But the preview isn't working. How can I make it displayable in ...

# compose

[chanjungskim]

I created custom button with coil. But the preview isn't working.

How can I make it displayable in preview?

fun GifImage(
    @DrawableRes resId: Int,
    contentDescription: String,
    modifier: Modifier = Modifier,
) {
    val imageLoader = ImageLoader.Builder(LocalContext.current)
        .components {
            if (SDK_INT >= 28) {
                add(ImageDecoderDecoder.Factory())
            } else {
                add(GifDecoder.Factory())
            }
        }.build()
    Image(
        painter = rememberAsyncImagePainter(resId, imageLoader),
        contentDescription = contentDescription,
        modifier = modifier
    )
}

[Colin White]

Coil only displays the placeholder element in preview since the preview environment is a bit special. IIRC certain decoders won’t work inside preview

[Colin White]

Also I’d remember the ImageLoader so it’s not recreated on each composition

[Stylianos Gakis]

Is this still the case?
Would it not be nice to be able to provide a preview only ImageLoader, something like this class PreviewImageLoader(private val drawable: Drawable) : ImageLoader {... to your previews to do something like render all the preview images with a filled red color or something like that, just to know a but better what the final UI will look like before running the app?