Insert a Row inside a Column in Flutter : <p>My UI screen is basically rendered using a Column Widget and inside this widget, I am inserting all the other UI components. One of these happens to be a Row ( consisting of 2 text fields). This is the Row Widget :</p>

<pre><code>var phoneNumber = new Row(
  children: &lt;Widget&gt;[
    new Padding(
      padding: const EdgeInsets.all(20.0),
      child: countryCodePicker,
    ),
    new Padding(
      padding: const EdgeInsets.all(20.0),
      child: mobileNumber,
    ),
  ],
);
</code></pre>

<p>The Main UI Screen being :</p>

<pre><code>     return SafeArea(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: &lt;Widget&gt;[
                customerName,
                emailAddress,
//                new Container(
//                  child: deliveryOptionRow,
//                ),
                mobileNumber,
                countryCodePicker,
                templateMessagesDropDown,
                templateMessageTextField,
                sendGoogleReview,
              ],
            )
    );
</code></pre>

<p>I see this exception when I add the Row to the Column</p>

<pre><code>     The following RenderObject was being processed when the exception was fired:
flutter:   _RenderListTile#06b03 relayoutBoundary=up11 NEEDS-LAYOUT NEEDS-PAINT
flutter:   creator: _ListTile ← MediaQuery ← Padding ← SafeArea ← Semantics ← Listener ← _GestureSemantics ←
flutter:   RawGestureDetector ← GestureDetector ← InkWell ← ListTile ← ListTileTheme ← ⋯
flutter:   parentData: offset=Offset(0.0, 0.0) (can use size)
flutter:   constraints: BoxConstraints(unconstrained)
flutter:   size: MISSING
flutter: This RenderObject had the following descendants (showing up to depth 5):
flutter:   _RenderRadio#302a4 relayoutBoundary=up12 NEEDS-PAINT
flutter:   RenderParagraph#58a45 NEEDS-LAYOUT NEEDS-PAINT
</code></pre>

<p>What would be the best way to add the row inside the main UI screen. </p>
