o Set the contentScaleFactor for the map tiled layer before every view update (s…

…hould fix #33 and #34)

@@ -79,9 +79,10 @@
     [super dealloc];
 }
 
-- (void)layoutSubviews
+- (void)setNeedsDisplay
 {
     self.contentScaleFactor = 1.0f;
+    [super setNeedsDisplay];
 }
 
 -(void)drawRect:(CGRect)rect

@@ -1342,7 +1342,15 @@
 
     adjustTilesForRetinaDisplay = doAdjustTilesForRetinaDisplay;
 
-    [self createMapView];
+    // Not so good: this replicates functionality from createMapView
+    int tileSideLength = [[self tileSource] tileSideLength];
+
+    if (adjustTilesForRetinaDisplay && screenScale > 1.0)
+        ((CATiledLayer *)tiledLayerView.layer).tileSize = CGSizeMake(tileSideLength * 2.0, tileSideLength * 2.0);
+    else
+        ((CATiledLayer *)tiledLayerView.layer).tileSize = CGSizeMake(tileSideLength, tileSideLength);
+
+    [self setCenterCoordinate:self.centerCoordinate animated:NO];
 }
 
 - (RMProjection *)projection

@@ -27,11 +27,13 @@
 - (void)viewDidLoad
 {
     [super viewDidLoad];
-    mapView.delegate = self;
 
-    /* -- Uncomment to constrain view
-    [mapView setConstraintsSW:((CLLocationCoordinate2D){-33.942221,150.996094}) 
-                           NE:((CLLocationCoordinate2D){-33.771157,151.32019})]; */
+//    [mapView setConstraintsSouthWest:CLLocationCoordinate2DMake(47.0, 10.0)
+//                          northEeast:CLLocationCoordinate2DMake(48.0, 11.0)];
+
+    mapView.centerCoordinate = CLLocationCoordinate2DMake(47.56, 10.22);
+//    mapView.adjustTilesForRetinaDisplay = YES;
+    mapView.delegate = self;
 
     [self updateInfo];
 }