Fixed call to DetailView().

examples/widgets/lists/list_cascade.py

@@ -64,9 +64,7 @@ class CascadingView(GridLayout):
 
         # Detail view, for a given fruit, on the right:
         #
-        detail_view = DetailView(
-                observed_list_adapter=fruits_list_adapter,
-                size_hint=(.6, 1.0))
+        detail_view = DetailView(size_hint=(.6, 1.0))
         fruits_list_adapter.bind(
                 on_selection_change=detail_view.on_selection_change)
         self.add_widget(detail_view)

kivy/adapters/listadapter.py

@@ -119,10 +119,8 @@ class ListAdapter(SelectionSupport, SimpleListAdapter):
                 if v is not None:
                     print 'selecting first data item view', v, v.is_selected
                     self.handle_selection(v)
-                #else:
-                    #print 'ERROR: No data, so cannot initialize selection.'
 
-    def touch_selection(self):
+    def touch_selection(self, *args):
         self.dispatch('on_selection_change')