title: Flutter Slider - doesn't show label
body: <p>I've this Slider but it's not showing the label anywhere. </p>
  
  <p>Is this the normal behaviour?</p>
  
  <pre><code>double _value;
  
    _buildEditModeWidget() {
      return Expanded(
          child: Column(
        children: &lt;Widget&gt;[
          SizedBox(height: 60,),
          Slider(
          label: "Power: ",
            min: 0,
            max: 9,
            value: _value,
            onChanged: (double newValue) {
              setState(() {
                _value = newValue;
              });
            },
          )
        ],
      ));
    }
  
  
  
  
  
    @override
    Widget build(BuildContext context) {
      return Container(
        decoration: BoxDecoration(border: Border(top: BorderSide(width: 1))),
        height: editMode ? _editModeHeight : _readOnlyHeight,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.start,
          children: &lt;Widget&gt;[
            Padding(
              padding: const EdgeInsets.all(8),
              child: AspectRatio(
                aspectRatio: 0.9,
                child: (extension(widget.model.team.shieldImage) != ".svg")
                    ? Image.network(
                        widget.model.team.shieldImage,
                        fit: BoxFit.scaleDown,
                        filterQuality: FilterQuality.high,
                      )
                    : SvgPicture.network(
                        widget.model.team.shieldImage,
                        fit: BoxFit.scaleDown,
                      ),
              ),
            ),
            ScopedModelDescendant&lt;TeamModel&gt;(
              builder: (BuildContext context, Widget child, TeamModel model) {
                return editMode ? _buildEditModeWidget() : _buildReadOnlyWidget();
              },
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: &lt;Widget&gt;[
                Container(
                  child: editMode
                      ? IconButton(
                    icon: Icon(Icons.check),
                    onPressed: () {
                      setState(() {
                        widget.model.updateTeam(_teamNameController.text, 0);
                        editMode = false;
                      });
                    },
                  )
                      : IconButton(
                    key: _key,
                    icon: Icon(Icons.edit),
                    onPressed: () {
                      setState(() {
                        editMode = true;
                      });
                    },
                  ),
                )
                ],
            )
          ],
        ),
      );
    }
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/7r5VD.gif" rel="noreferrer"><img src="https://i.stack.imgur.com/7r5VD.gif" alt="enter image description here"></a></p>