Get the image file from a preloaded image

Is your feature request related to a problem? Please describe. I’m looking for a way to get the image file from a preloaded image, but seems Coil lacks this feature at the moment.

Describe the solution you’d like On Glide I do:

val preloadedImageFile = Glide
    .with(context)
    .downloadOnly()
    .load(imageUrl)
    .submit()
    .get()

Would be nice if we have at least one of these options in Coil:

Coil.getFile(imageUrl)

Coil.load(context, imageUrl) {
    target(object : FileTarget {
        override fun onSuccess(result: File) {
            
        }
    })
}

[colinrtwhite]

I’ve just published 2.0.0-alpha01 which makes the disk cache public. It’s experimental and subject to change, but you can get access to the image’s file like so:

context.imageLoader.diskCache?.get(url)?.use { snapshot ->
    val imageFile = snapshot.data.toFile()
    // Read or copy the file. You **must** close the snapshot (`use` closes the snapshot)
    // or it'll prevent writing to that entry until your app is killed.
}

The new disk cache also has support for editing/removing entries. Check it out!

[saket]

+1 for this. Any chances this can be re-opened? Displaying large images through coil is a bit of a pain right now because libraries like SubsamplingScaleImageView only take in files instead of Drawables.

I tried accessing OkHttp’s cache directly, but the code is very fragile:

val coilCache = CoilUtils.createDefaultCache(context)
val file = File(coilCache.directory, "${Cache.key(imageUrl.toHttpUrl())}.1")