title: Kivy -- scroll view not working. And and how add chat users on side pane
body: <p>I'm trying to do write a chat application with an interface that has users names on the side pane that's scrollable.</p>
  
  <p>I have 2 questions:</p>
  
  <p>1- This code is not scrolling, please let me know what I'm doing wrong:</p>
  
  <pre><code>stacklayout2 = StackLayout(orientation='lr-tb',)
  ## Scrollview layout
  scroll_layout = GridLayout(cols=1, 
                             spacing=20,
                             size_hint_y=None
                             )
  scroll_layout.bind(minimum_height=layout.setter('height'))
  
  for i in range(10):
      scroll_layout.add_widget(ToggleButton(text=str(i), 
                                            size_hint_y=None, 
                                            height=40
                                            )
                              )
  
  
  scrollview = ScrollView(size_hint=(.3,.5), do_scroll_x=False)
  scrollview.add_widget(scroll_layout)
  
  
  stacklayout2.add_widget(scrollview)
  stacklayout2.add_widget(Button(text='Send',size_hint=(.2,.2)))
  
  s2.add_widget(stacklayout2)
  </code></pre>
  
  <p>2- Is it the best way to put (clickable/selectable) users on the side pane, I'm doing it right?</p>