title: how to set up scrollview for a label in a boxlayout
body: <p>here is my code</p>
  <pre><code>     BoxLayout:
          size_hint: 1, 4
          BoxLayout:
              size_hint: .15, 1
          ScrollView:
              id: sc
              scroll_type:[&quot;bars&quot;]
              bar_width: 10
              bar_color: 1,0,0
              BoxLayout:
                  size_hint:(1, None)
                  height:self.minimum_height
                  #size_hint: 1, 1
                  Label:
                      #height: sc.height
                      #height:self.height
                      size_hint:(1, None)
                      id: nt
                      color: 1,1,1
                      text:root.textn
                      font_size: &quot;20sp&quot;
                      text_size: self.size
                      valign: &quot;top&quot;
                      halign: &quot;left&quot;
          BoxLayout:
              size_hint: .15, 1
  </code></pre>
  <p>with the above code i get this <a href="https://i.stack.imgur.com/EGj18.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EGj18.png" alt="enter image description here" /></a></p>
  <p>it does not show the whole text and the scrollview does not come into effect
  what can i do?</p>