Improved Map Performance for OSM basemaps (#1784)

This increases the displayed size of the tiles on the screen and therefore reduces the numbers of tiles being requested at any given time to speed up the entire map display as well as increase the size of objects on the screen while maintaining the appropriate zoom level for the tile provider.
getodk · Jan 17, 2018 · 30e9b20 · 30e9b20
1 parent 0731eb7
commit 30e9b20
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Showing 3 changed files with 4 additions and 1 deletion.
diff --git a/collect_app/src/main/java/org/odk/collect/android/activities/GeoPointOsmMapActivity.java b/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);

diff --git a/collect_app/src/main/java/org/odk/collect/android/activities/GeoShapeOsmMapActivity.java b/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() {

diff --git a/collect_app/src/main/java/org/odk/collect/android/activities/GeoTraceOsmMapActivity.java b/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;
     }
-}
+}