Now, I'm using my offline map osmdroid MapQuest (.zip file). However, the delay action time is not very good.
Like: Map View Initialiation Time, Action Zoom Time ...
Are there some solution to improve its performance? (like unzip .zip file or something else?)
Thanks.
You stand a lot better chance with something like the GEMF format that is explicitly designed for the job at hand rather than ZIP. For big files it's way better. It is what I recommend for my users.