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    <p>I created a tile source that suppoort jpg, you can take a look and adapt your case, Please note that getTileRelativeFilenameString won't contain .title ext. That part will be added by (MapTileFilesystemProvider)</p> <pre><code>import java.io.File; import java.io.InputStream; import java.util.Random; import org.osmdroid.ResourceProxy; import org.osmdroid.ResourceProxy.string; import org.osmdroid.tileprovider.MapTile; import org.osmdroid.tileprovider.tilesource.BitmapTileSourceBase.LowMemoryException; import org.osmdroid.tileprovider.tilesource.ITileSource; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; public class MapTilerCustomDataSource implements ITileSource { private static int globalOrdinal = 0; private final int mMinimumZoomLevel; private final int mMaximumZoomLevel; private final int mOrdinal; protected final String mName; protected final String mImageFilenameEnding; protected final Random random = new Random(); private final int mTileSizePixels; private final string mResourceId; public MapTilerCustomDataSource() { mResourceId = null; mOrdinal = globalOrdinal++; mName = "MapquestOSM"; mMinimumZoomLevel = 0; mMaximumZoomLevel = 20; mTileSizePixels = 256; mImageFilenameEnding = ".jpg"; } @Override public String getTileRelativeFilenameString(final MapTile tile) { final StringBuilder sb = new StringBuilder(); sb.append(pathBase()); sb.append('/'); sb.append(tile.getZoomLevel()); sb.append('/'); sb.append(tile.getX()); sb.append('/'); sb.append(tile.getY()); sb.append(imageFilenameEnding()); return sb.toString(); } @Override public Drawable getDrawable(String aFilePath) throws LowMemoryException { try { // default implementation will load the file as a bitmap and create // a BitmapDrawable from it final Bitmap bitmap = BitmapFactory.decodeFile(aFilePath); if (bitmap != null) { return new BitmapDrawable(bitmap); } else { // if we couldn't load it then it's invalid - delete it try { new File(aFilePath).delete(); } catch (final Throwable e) { } } } catch (final OutOfMemoryError e) { System.gc(); } return null; } @Override public Drawable getDrawable(InputStream aFileInputStream) throws LowMemoryException { try { // default implementation will load the file as a bitmap and create // a BitmapDrawable from it final Bitmap bitmap = BitmapFactory.decodeStream(aFileInputStream); if (bitmap != null) { return new BitmapDrawable(bitmap); } } catch (final OutOfMemoryError e) { System.gc(); } return null; } @Override public int ordinal() { return mOrdinal; } @Override public String name() { return mName; } public String pathBase() { return mName; } public String imageFilenameEnding() { return mImageFilenameEnding; } @Override public int getMinimumZoomLevel() { return mMinimumZoomLevel; } @Override public int getMaximumZoomLevel() { return mMaximumZoomLevel; } @Override public int getTileSizePixels() { return mTileSizePixels; } @Override public String localizedName(final ResourceProxy proxy) { return proxy.getString(mResourceId); } } </code></pre>
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    1. POOsmDroid and MapQuest: How can I use JPEG tiles?
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    1. USTran Hoang Duy Anh
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