I want to develop downloading stored map from app. Stored map is downloaded via gMapMaker and app will download map from server. There is some download manager http://developer.android.com/reference/android/app/DownloadManager.html but from API 9. I need from API 3 or at least from API 4. What is the best solution to download huge number of mgm files to SD card from app?
I do not see other solution than creation of own download manager. A suggestion - I would use MBTiles tiles instead of MGM files. Then you have less files to be downloaded, and managed in device. For creation of them there is nice tool Mobile Atlas Creator (which supports also MGM, by the way). And if you use tilemill to generate tiles then you can even embed interactive tooltips to tiles, without using vector overlays. Nutiteq mapping sample for Android project has example code for it.
/JaakL