Asynchronous model for AsyncImage

[kurthuwig]

I have a URL that requires an OAuth access token that might need a refresh. So the generation of the request can only be done asynchronously. How can I do this, so that I do not have to use my own placeholder but instead the one that AsyncImage already provides? According to the docs, I have to provide the finished URL as a model.

I imagine something like this:

    AsyncImage(
        modifier = modifier,
        model = { ... code that provides a URL ... },
        contentDescription = contentDescription,
        contentScale = ContentScale.Crop,
    )

I've tried it, but the code never gets executed - which means it is possible to add this feature :-)

[colinrtwhite]

Your best bet is to create a custom fetcher that performs the network request then delegates to the network fetcher. I added a section to the docs about this here.

Using a function as a model param would not work as we can't compute a valid memory cache key for it.