remember theme preference

src/org/mapsforge/android/MapActivity.java

@@ -14,6 +14,9 @@
  */
 package org.mapsforge.android;
 
+import java.io.FileNotFoundException;
+
+import org.mapsforge.android.rendertheme.InternalRenderTheme;
 import org.mapsforge.core.GeoPoint;
 import org.mapsforge.core.MapPosition;
 
@@ -37,6 +40,7 @@ public abstract class MapActivity extends Activity {
 	private static final String KEY_MAP_FILE = "mapFile";
 	private static final String KEY_ZOOM_LEVEL = "zoomLevel";
 	private static final String PREFERENCES_FILE = "MapActivity";
+	private static final String KEY_THEME = "Theme";
 
 	private static boolean containsMapViewPosition(SharedPreferences sharedPreferences) {
 		return sharedPreferences.contains(KEY_LATITUDE)
@@ -44,23 +48,15 @@ public abstract class MapActivity extends Activity {
 				&& sharedPreferences.contains(KEY_ZOOM_LEVEL);
 	}
 
-	/**
-	 * Counter to store the last ID given to a MapView.
-	 */
-	private int lastMapViewId;
-
 	/**
 	 * Internal list which contains references to all running MapView objects.
 	 */
 	private MapView mMapView;
 
-	private void destroyMapViews() {
-		mMapView.destroy();
-	}
-
 	private void restoreMapView(MapView mapView) {
 		SharedPreferences sharedPreferences = getSharedPreferences(PREFERENCES_FILE,
 				MODE_PRIVATE);
+
 		if (containsMapViewPosition(sharedPreferences)) {
 
 			if (sharedPreferences.contains(KEY_MAP_FILE)) {
@@ -77,12 +73,25 @@ public abstract class MapActivity extends Activity {
 			MapPosition mapPosition = new MapPosition(geoPoint, (byte) zoomLevel, 1);
 			mapView.setCenterAndZoom(mapPosition);
 		}
+
+		String theme = sharedPreferences.getString(KEY_THEME,
+				InternalRenderTheme.OSMARENDER.name());
+
+		if (theme.startsWith("/")) {
+			try {
+				mapView.setRenderTheme(theme);
+			} catch (FileNotFoundException e) {
+				mapView.setRenderTheme(InternalRenderTheme.OSMARENDER);
+			}
+		} else {
+			mapView.setRenderTheme(InternalRenderTheme.valueOf(theme));
+		}
 	}
 
 	@Override
 	protected void onDestroy() {
 		super.onDestroy();
-		destroyMapViews();
+		mMapView.destroy();
 	}
 
 	@Override
@@ -107,6 +116,8 @@ public abstract class MapActivity extends Activity {
 			editor.putString(KEY_MAP_FILE, mMapView.getMapFile());
 		}
 
+		editor.putString(KEY_THEME, mMapView.getRenderTheme());
+
 		editor.commit();
 	}
 
@@ -116,13 +127,6 @@ public abstract class MapActivity extends Activity {
 		mMapView.onResume();
 	}
 
-	/**
-	 * @return a unique MapView ID on each call.
-	 */
-	final int getMapViewId() {
-		return ++lastMapViewId;
-	}
-
 	/**
 	 * This method is called once by each MapView during its setup process.
 	 * 

src/org/mapsforge/android/MapView.java

@@ -94,8 +94,6 @@ public class MapView extends GLSurfaceView {
 	private DebugSettings debugSettings;
 	private String mMapFile;
 
-	private File cacheDir;
-
 	/**
 	 * @param context
 	 *            the enclosing MapActivity instance.
@@ -138,8 +136,6 @@ public class MapView extends GLSurfaceView {
 
 		MapActivity mapActivity = (MapActivity) context;
 
-		cacheDir = context.getFilesDir();
-
 		debugSettings = new DebugSettings(false, false, false, false);
 
 		mMapController = new MapController(this);
@@ -181,10 +177,12 @@ public class MapView extends GLSurfaceView {
 		setMapFile("default");
 		initMapStartPosition();
 
-		if (!setRenderTheme(DEFAULT_RENDER_THEME)) {
-			Log.d(TAG, "X could not parse theme");
-			// FIXME show init error dialog
-		}
+		mapActivity.registerMapView(this);
+
+		// if (!setRenderTheme(DEFAULT_RENDER_THEME)) {
+		// Log.d(TAG, "X could not parse theme");
+		// // FIXME show init error dialog
+		// }
 
 		setEGLConfigChooser(new GlConfigChooser());
 		setEGLContextClientVersion(2);
@@ -193,8 +191,6 @@ public class MapView extends GLSurfaceView {
 
 		if (!debugFrameTime)
 			setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
-
-		mapActivity.registerMapView(this);
 	}
 
 	public final static boolean debugFrameTime = false;
@@ -348,7 +344,7 @@ public class MapView extends GLSurfaceView {
 			if (mapFile != null)
 				fileOpenResult = mapDatabase.openFile(new File(mapFile));
 			else
-				fileOpenResult = mapDatabase.openFile(cacheDir);
+				fileOpenResult = mapDatabase.openFile(null);
 
 			if (fileOpenResult != null && fileOpenResult.isSuccess()) {
 				mMapFile = mapFile;
@@ -436,6 +432,12 @@ public class MapView extends GLSurfaceView {
 		mapWorkersProceed();
 	}
 
+	private String mRenderTheme;
+
+	public String getRenderTheme() {
+		return mRenderTheme;
+	}
+
 	/**
 	 * Sets the internal theme which is used for rendering the map.
 	 * 
@@ -451,6 +453,9 @@ public class MapView extends GLSurfaceView {
 		}
 
 		boolean ret = setRenderTheme((Theme) internalRenderTheme);
+		if (ret) {
+			mRenderTheme = internalRenderTheme.name();
+		}
 
 		clearAndRedrawMapView();
 		return ret;
@@ -471,7 +476,10 @@ public class MapView extends GLSurfaceView {
 			throw new IllegalArgumentException("render theme path must not be null");
 		}
 
-		setRenderTheme(new ExternalRenderTheme(renderThemePath));
+		boolean ret = setRenderTheme(new ExternalRenderTheme(renderThemePath));
+		if (ret) {
+			mRenderTheme = renderThemePath;
+		}
 
 		clearAndRedrawMapView();
 	}