Can I somehow get details from android key alias? like validity, organisation and so on... I lost my key and keystore files, but I remember all passwords, is there any way how can I get this information from existing apk file?
All I need to do is just export new version of my application and I want it to replace previous after installation.
THX
Sorry, there is no way to replace a lost keystore. Once it is lost you cannot get it back, do your best to find it, but failing this the best you can do is publish a new app(with a new keystore), and tell your users to install the new app for updates.
Make sure you backup your new key store, send it to yourself via email, put it in a cloud, and put it on a different computer so that doesn't happen again.
Even if you knew the details that you put in your old keystore you could not recreate it - keystores are designed to be impossible to recreate.
Just in case you want another source: