I've been pulling my hair out trying to get my own offline Mobile Atlas Creator OSMDroid SQLite map working with OSMDroid 3.0.8 without luck. It's been a long 3 days. I'll try to explain with clips from my application. I've been extending ItemizedIconOverlay and OverlayItem so I hope it doesn't get too confusing.
I created my own OSMDroid SQLite map file with 3 different zoom levels for a small are, like 10 square kms. I copied the resulting "base.sqlite" file into my project /res/raw/ directory. Note that the GeoPoints in my application should be well within the map's tile range. The "base.sqlite" file should get saved to the application specific data directory.
Next I turfed the /osmdroid directory on my phone so I could get the previously cached maps off. I thought I had my own offline maps working until I turned on Airplane mode and noticed the cached maps were still available.
Now all I get is blanks. I have no clue how to get this going. I've see a couple of examples but after a ton of experimentation I haven't been successful in getting any of them working.
private Hashtable<String, NodeOverlayItem> nodes = new Hashtable<String, NodeOverlayItem>();
private MapView mapView;
private Context context;
private LocationManager locManager;
private MapController mapController;
private MapTileProviderArray mapProvider;
private String mapTileArchivePath = "base.sqlite";
private ResourceProxy resourceProxy;
@Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
this.mapView = new MapView(this, 256);
this.mapView.setBuiltInZoomControls(true);
this.mapView.setMultiTouchControls(true);
this.context = this.getApplicationContext();
this.resourceProxy = new DefaultResourceProxyImpl(context);
XYTileSource TILERENDERER = new XYTileSource("test",
ResourceProxy.string.offline_mode,
1, 20, 256, ".png", "http://127.0.0.1");
SimpleRegisterReceiver simpleReceiver = new SimpleRegisterReceiver(this.context);
IArchiveFile[] archives = { ArchiveFileFactory.getArchiveFile(this.getMapsFile()) };
MapTileModuleProviderBase moduleProvider = new MapTileFileArchiveProvider(
simpleReceiver,
TILERENDERER,
archives);
this.mapProvider = new MapTileProviderArray(TILERENDERER, null, new MapTileModuleProviderBase[] { moduleProvider });
this.mapProvider.setUseDataConnection(false);
this.mapView = new MapView(this, 256, this.resourceProxy, this.mapProvider);
this.mapView.setUseDataConnection(false);
mapController = mapView.getController();
mapController.setZoom(18);
mapController.setCenter(new GeoPoint((int)(45.349622 * 1E6), (int)(-75.880700 *1E6)));
this.setContentView(mapView);
} catch(Exception ex) {
Log.e("test", ex.getMessage());
}
}
public File getMapsFile() throws IOException {
Log.d("test", "Trying to load map tiles to: " + this.mapTileArchivePath);
FileOutputStream fos = this.openFileOutput(this.mapTileArchivePath, Context.MODE_PRIVATE);
InputStream in = getResources().openRawResource(R.raw.osmdroid);
byte[] buff = new byte[1024];
int read = 0;
try {
while ((read = in.read(buff)) > 0) {
fos.write(buff, 0, read);
}
} finally {
in.close();
fos.close();
}
return new File(this.getFilesDir(), this.mapTileArchivePath);
}