fixes:

- start MapWorkers at end of init
- check for screensize > 0 in updateMap

src/org/oscim/utils/PausableThread.java

@@ -18,7 +18,7 @@ package org.oscim.utils;
  * An abstract base class for threads which support pausing and resuming.
  */
 public abstract class PausableThread extends Thread {
-	private boolean mPausing;
+	private boolean mPausing = true;
 	private boolean mShouldPause;
 
 	/**

src/org/oscim/view/MapActivity.java

@@ -116,7 +116,8 @@ public abstract class MapActivity extends Activity {
 			GeoPoint geoPoint = new GeoPoint(latitudeE6, longitudeE6);
 			MapPosition mapPosition = new MapPosition(geoPoint, (byte) zoomLevel, 1);
 
-			mapView.setMapCenter(mapPosition);
+			mMapView.getMapViewPosition().setMapCenter(mapPosition);
+			// mapView.setMapCenter(mapPosition);
 		}
 
 		String theme = sharedPreferences.getString(KEY_THEME,

src/org/oscim/view/MapView.java

@@ -38,8 +38,8 @@ import org.oscim.theme.Theme;
 import org.oscim.view.generator.JobQueue;
 import org.oscim.view.generator.JobTile;
 import org.oscim.view.generator.MapWorker;
-import org.oscim.view.renderer.TileGenerator;
 import org.oscim.view.renderer.MapRenderer;
+import org.oscim.view.renderer.TileGenerator;
 import org.xml.sax.SAXException;
 
 import android.content.Context;
@@ -163,7 +163,6 @@ public class MapView extends FrameLayout {
 				mMapDatabase = mapDatabase;
 
 			mMapWorkers[i] = new MapWorker(i, mJobQueue, tileGenerator, mMapRenderer);
-			mMapWorkers[i].start();
 		}
 
 		mapActivity.registerMapView(this);
@@ -190,6 +189,10 @@ public class MapView extends FrameLayout {
 		mMapZoomControls.setShowMapZoomControls(true);
 
 		enableRotation = true;
+
+		for (MapWorker worker : mMapWorkers)
+			worker.start();
+
 	}
 
 	/**
@@ -221,10 +224,16 @@ public class MapView extends FrameLayout {
 	 * Calculates all necessary tiles and adds jobs accordingly.
 	 */
 	public void redrawMap() {
+		if (mPausing || this.getWidth() == 0 || this.getHeight() == 0)
+			return;
+
 		mMapRenderer.updateMap(false);
 	}
 
 	public void clearAndRedrawMap() {
+		if (mPausing || this.getWidth() == 0 || this.getHeight() == 0)
+			return;
+
 		mMapRenderer.updateMap(true);
 	}
 
@@ -462,18 +471,28 @@ public class MapView extends FrameLayout {
 		}
 	}
 
+	private boolean mPausing = false;
+
 	void onPause() {
-		mapWorkersPause(false);
+		mPausing = true;
+
+		Log.d(TAG, "onPause");
+		mJobQueue.clear();
+		mapWorkersPause(true);
 
 		if (this.enableCompass)
 			mCompass.disable();
+
 	}
 
 	void onResume() {
+		Log.d(TAG, "onResume");
 		mapWorkersProceed();
 
 		if (this.enableCompass)
 			mCompass.enable();
+
+		mPausing = false;
 	}
 
 	/**

src/org/oscim/view/renderer/MapRenderer.java

@@ -33,32 +33,7 @@ import android.util.Log;
 
 public class MapRenderer extends GLSurfaceView {
 	private final static String TAG = "MapRenderer";
-
+	private GLRenderer mRenderer;
-	public MapRenderer(Context context, MapView mapView) {
-		super(context);
-
-		mMapView = mapView;
-
-		Log.d(TAG, "init GLSurfaceLayer");
-		setEGLConfigChooser(new GlConfigChooser());
-		setEGLContextClientVersion(2);
-
-		// setDebugFlags(DEBUG_CHECK_GL_ERROR | DEBUG_LOG_GL_CALLS);
-		mRenderer = new GLRenderer(mMapView);
-		setRenderer(mRenderer);
-		//
-		// if (!debugFrameTime)
-		setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
-
-		mJobList = new ArrayList<JobTile>();
-		mTiles = new ArrayList<MapTile>();
-		mTilesLoaded = new ArrayList<MapTile>(30);
-
-		ShortPool.init();
-		QuadTree.init();
-
-		mInitial = true;
-	}
 
 	private static final int MAX_TILES_IN_QUEUE = 40;
 
@@ -85,6 +60,32 @@ public class MapRenderer extends GLSurfaceView {
 
 	private static TilesData newTiles;
 
+	public MapRenderer(Context context, MapView mapView) {
+		super(context);
+
+		mMapView = mapView;
+
+		Log.d(TAG, "init GLSurfaceLayer");
+		setEGLConfigChooser(new GlConfigChooser());
+		setEGLContextClientVersion(2);
+
+		// setDebugFlags(DEBUG_CHECK_GL_ERROR | DEBUG_LOG_GL_CALLS);
+		mRenderer = new GLRenderer(mMapView);
+		setRenderer(mRenderer);
+
+		// if (!debugFrameTime)
+		setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
+
+		mJobList = new ArrayList<JobTile>();
+		mTiles = new ArrayList<MapTile>();
+		mTilesLoaded = new ArrayList<MapTile>(30);
+
+		ShortPool.init();
+		QuadTree.init();
+
+		mInitial = true;
+	}
+
 	/**
 	 * called by MapView when position or map settings changes
 	 */
@@ -511,13 +512,6 @@ public class MapRenderer extends GLSurfaceView {
 
 	}
 
-	private GLRenderer mRenderer;
-
-	@Override
-	public void onPause() {
-		super.onPause();
-	}
-
 	@Override
 	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
 

src/org/oscim/view/renderer/TileGenerator.java

@@ -98,7 +98,7 @@ public class TileGenerator implements IRenderCallback, IMapDatabaseCallback {
 	 *            the MapView
 	 */
 	public TileGenerator(MapView mapView) {
-		Log.d(TAG, "init DatabaseRenderer");
+		Log.d(TAG, "init TileGenerator");
 		mMapView = mapView;
 	}