I am totally new to this api and I was wondering if there is a way that I can use the maps offline. I don't mind the size of the application be large so if there are anyways involved caching or something else size related, it is not a problem
Any suggestions?
ps: if it is not possible in google's api,is there a way to do this with another api form another source which provides a mapping service?
You can try to use osmdroid to work offline with Google Maps. Osmdroid is a replacement for Android's MapView class. It also includes a modular tile provider system with support for numerous online and offline tile sources and overlay support with built-in overlays for plotting icons, tracking location, and drawing shapes.
You can follow this tutorial in how to use it.
来源：https://stackoverflow.com/questions/36600306/how-to-make-maps-work-offline-in-google-maps-api-for-android