Caching temporarily a part of a Map (MapView)

Issue

I'm developing an application with the MapView and the GPS. My problem is that the user might disconnect while using my application, so he'll be walking in a fully grey map. I'd like to cache the map temporarily in order to see it later. I know that cache the map isn't allowed by the google maps API, but I want to be sure if TEMPORARILY cache it (and delete it when the app is closed) is also forbidden.

I've heard about openstreetmaps / osmdroid, but I'd like to confirm that I HAVE to use it before deleting half of my code.

Solution

Because I need the satelliteView, I finally used a method that could be improved.

I start a thread that asks the controler to go to a location near the user. It's downloaded and the cache is managed by the MapView:

int latitudeSpan = mapView.getLatitudeSpan();
        int longitudeSpan = mapView.getLongitudeSpan();
        for(int i=-MEMORIZED_MAP_SIZE;i<=MEMORIZED_MAP_SIZE;i++)
        {
            for(int j=-MEMORIZED_MAP_SIZE;j<=MEMORIZED_MAP_SIZE;j++)
            {
                synchronized (this) 
                {
                    if(i==j&&j==0) j++;
                    Message msg = new Message();
                    msg.arg1=latitude+latitudeSpan*i;
                    msg.arg2=longitude+longitudeSpan*j;
                    msg.setTarget(MainActivity.handler);
                    msg.sendToTarget();
                    try
                    {
                    wait(5000);
                    }
                    catch(Exception e){}
                }
            }
        }

Now, I just need to find another way than "wait(5000)" to know that the part of the map I'm looking at is downloaded. I'll modify this message if I find one.

Answered By - Setsuki