Added method getCacheContents(), which returns a list of tiles in the
cache; useful if you want to build a cache navigator in your UI. Added
methods isOnline()/isOffline(). Added optional success_callback to
constructor and utility function, which is called when all
time-intensive filesystem activity is complete; useful for updating
status indicators that rely on filesystem info (like getDiskUsage()).
Added getLng()/getLat(), used by getCacheContents(). Updated doc and
test app. Tested on Android 4.4.2 and iOS 8.3.
Added method getCacheContents(), which returns a list of tiles in the cache; useful if you want to build a cache navigator in your UI. Added methods isOnline()/isOffline(). Added optional success_callback to constructor and utility function, which is called when all time-intensive filesystem activity is complete; useful for updating status indicators that rely on filesystem info (like getDiskUsage()). Added getLng()/getLat(), used by getCacheContents(). Updated doc and test app. Tested on Android 4.4.2 and iOS 8.3.