Added forced dispatch of on_selection_change after instantiation of DetailView in examples.

examples/widgets/list_cascade.py

@@ -19,7 +19,6 @@ class DetailView(GridLayout):
     def __init__(self, **kwargs):
         kwargs['cols'] = 2
         super(DetailView, self).__init__(**kwargs)
-        self.bind(fruit_name=self.redraw)
 
     def redraw(self, *args):
         self.clear_widgets()
@@ -101,6 +100,9 @@ class CascadingView(GridLayout):
                 on_selection_change=detail_view.on_selection_change)
         self.add_widget(detail_view)
 
+        # Force triggering of on_selection_change() for the DetailView, for
+        # correct initial display.
+        fruits_list_adapter.touch_selection()
 
 # Data from http://www.fda.gov/Food/LabelingNutrition/\
 #                FoodLabelingGuidanceRegulatoryInformation/\

examples/widgets/list_disclosure.py

@@ -147,6 +147,10 @@ class MasterDetailView(GridLayout):
 
         list_adapter.bind(on_selection_change=detail_view.on_selection_change)
 
+        # Force triggering of on_selection_change() for the DetailView, for
+        # correct initial display.
+        list_adapter.touch_selection()
+
 # Data from http://www.fda.gov/Food/LabelingNutrition/\
 #                FoodLabelingGuidanceRegulatoryInformation/\
 #                InformationforRestaurantsRetailEstablishments/\

examples/widgets/list_master_detail.py

@@ -67,6 +67,10 @@ class MasterDetailView(GridLayout):
 
         list_adapter.bind(on_selection_change=detail_view.on_selection_change)
 
+        # Force triggering of on_selection_change() for the DetailView, for
+        # correct initial display.
+        list_adapter.touch_selection()
+
 # Data from http://www.fda.gov/Food/LabelingNutrition/\
 #                FoodLabelingGuidanceRegulatoryInformation/\
 #                InformationforRestaurantsRetailEstablishments/\

kivy/adapters/listadapter.py

@@ -122,6 +122,9 @@ class ListAdapter(SelectionSupport, SimpleListAdapter):
                 #else:
                     #print 'ERROR: No data, so cannot initialize selection.'
 
+    def touch_selection(self):
+        self.dispatch('on_selection_change')
+
 
 class ListsAdapter(ListAdapter):
     '''ListsAdapter is specialized for managing a dict of lists. It has wide

kivy/adapters/mixins/selection.py

@@ -104,8 +104,6 @@ class SelectionSupport(object):
         self.bind(selection_mode=self.check_for_empty_selection,
                   allow_empty_selection=self.check_for_empty_selection)
 
-        #self.check_for_empty_selection()
-
     def handle_selection(self, obj):
         if obj not in self.selection:
             if self.selection_mode == 'single' and len(self.selection) > 0: