fix: UrlTileSource.Builder was hiding zoom values from TileSource.Builder

- values set thorugh builder.minZoom()/maxZoom() were ignored

should fix: #120

vtm/src/org/oscim/tiling/TileSource.java

@@ -23,16 +23,16 @@ import org.oscim.layers.tile.bitmap.BitmapTileLayer.FadeStep;
 public abstract class TileSource {
 
 	public abstract static class Builder<T extends Builder<T>> {
-		int minZoom, maxZoom;
-		FadeStep[] fadeSteps;
+		protected int zoomMin, zoomMax;
+		protected FadeStep[] fadeSteps;
 
 		public T zoomMin(int zoom) {
-			minZoom = zoom;
+			zoomMin = zoom;
 			return self();
 		}
 
 		public T zoomMax(int zoom) {
-			maxZoom = zoom;
+			zoomMax = zoom;
 			return self();
 		}
 
@@ -60,6 +60,12 @@ public abstract class TileSource {
 		mZoomMax = zoomMax;
 	}
 
+	public TileSource(Builder<?> builder) {
+		mZoomMin = builder.zoomMin;
+		mZoomMax = builder.zoomMax;
+		mFadeSteps = builder.fadeSteps;
+	}
+
 	public abstract ITileDataSource getDataSource();
 
 	public abstract OpenResult open();

vtm/src/org/oscim/tiling/source/UrlTileSource.java

@@ -28,7 +28,6 @@ import org.oscim.tiling.source.LwHttp.LwHttpFactory;
 public abstract class UrlTileSource extends TileSource {
 
 	public abstract static class Builder<T extends Builder<T>> extends TileSource.Builder<T> {
-		protected int zoomMin, zoomMax;
 		protected String tilePath;
 		protected String url;
 		private HttpEngine.Factory engineFactory;
@@ -74,7 +73,9 @@ public abstract class UrlTileSource extends TileSource {
 	}
 
 	protected UrlTileSource(Builder<?> builder) {
-		this(builder.url, builder.tilePath, builder.zoomMin, builder.zoomMax);
+		super(builder);
+		mUrl = makeUrl(builder.url);
+		mTilePath = builder.tilePath.split("\\{|\\}");
 		mHttpFactory = builder.engineFactory;
 	}
 
@@ -84,17 +85,25 @@ public abstract class UrlTileSource extends TileSource {
 
 	protected UrlTileSource(String urlString, String tilePath, int zoomMin, int zoomMax) {
 		super(zoomMin, zoomMax);
+		mUrl = makeUrl(urlString);
+		mTilePath = makeTilePath(tilePath);
+	}
+
+	private String[] makeTilePath(String tilePath) {
 		if (tilePath == null)
 			throw new IllegalArgumentException("tilePath cannot be null.");
 
+		return tilePath.split("\\{|\\}");
+	}
+
+	private URL makeUrl(String urlString) {
 		URL url = null;
 		try {
 			url = new URL(urlString);
 		} catch (MalformedURLException e) {
 			throw new IllegalArgumentException(e);
 		}
-		mUrl = url;
-		mTilePath = tilePath.split("\\{|\\}");
+		return url;
 	}
 
 	@Override