I wrote this tool to speed up exporting APK:s from the Unity Editor, but it will probably come in handy for anyone who creates APK:s manually as part of their process;
It is essentially a command line 'zip' replacement that packs in parallell and can do APK signing on the fly. Creating a signed APK from a normal sized set of data usually takes under a second. The project is open sourced under the MIT license at: https://bitbucket.org/Unity-Technologies/fastzip -- Jonas Minnberg -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/102735b8-e7da-4353-a990-ca8390ec2d95%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

