Improved Map Performance for OSM basemaps

collect_app/src/main/java/org/odk/collect/android/activities/GeoPointOsmMapActivity.java

@@ -125,6 +125,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
             map.setMultiTouchControls(true);
             map.setBuiltInZoomControls(true);
+            map.setTilesScaledToDpi(true);
         }
 
         marker = new Marker(map);

collect_app/src/main/java/org/odk/collect/android/activities/GeoShapeOsmMapActivity.java

@@ -95,6 +95,7 @@ protected void onCreate(Bundle savedInstanceState) {
         helper = new MapHelper(this, map, this);
         map.setMultiTouchControls(true);
         map.setBuiltInZoomControls(true);
+        map.setTilesScaledToDpi(true);
         map.setMapListener(mapViewListener);
         overlayPointPathListener();
         saveButton.setOnClickListener(new View.OnClickListener() {

collect_app/src/main/java/org/odk/collect/android/activities/GeoTraceOsmMapActivity.java

@@ -124,6 +124,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
         mapView.setMultiTouchControls(true);
         mapView.setBuiltInZoomControls(true);
+        mapView.setTilesScaledToDpi(true);    
         mapView.getController().setZoom(zoomLevel);
 
         inflater = this.getLayoutInflater();
@@ -893,4 +894,4 @@ public void setMyLocationOverlay(MyLocationNewOverlay myLocationOverlay) {
     public AlertDialog getErrorDialog() {
         return errorDialog;
     }
-}
+}