android - Cache images local, from google firebase storage

Question

I am searching for a way, to cache images from the storage on google firebase platform. For now, I can download images, and show these to users, but I am not able to cache this, and access, even without internet connection. The database can be accessed offline. So I thought, there would be a way for storage too. I don't want to download every single image to storage, cause then I would need to check everytime, if the image is still up to date, it may be changed. Here are few links, what I could find, but no answer for my question. Maybe someone know a workaround, or a way how to accomplish it. Thanks!

Download files: https://firebase.google.com/docs/storage/android/download-files

Cache (offline) database: https://firebase.google.com/docs/database/android/offline-capabilities

UPDATE 1

Here is how I "cache" files with picasso, I added activity, that cares the download:

Picasso.with(getApplicationContext())
                            .load(uri.toString())
                            .networkPolicy(NetworkPolicy.OFFLINE)
                            .into(image1);

Any help is welcome. Thanks!

Answer 1

Waitting for answers