From 871386bbb42bfecc265a78574ec165d053b896ff Mon Sep 17 00:00:00 2001
From: Hans Muller <hans.muller@gmail.com>
Date: Wed, 11 Aug 2021 17:29:29 -0700
Subject: [PATCH] Revert "Changing ElevatedButton.child to be non-nullable
 (#87901)" (#88071)

This reverts commit 724c0eb65cef6a66241f9f1500dc9ed53991d5be.
---
 packages/flutter/lib/src/material/elevated_button.dart   | 2 +-
 packages/flutter/lib/src/widgets/basic.dart              | 4 ++--
 packages/flutter/test/material/material_test.dart        | 2 +-
 packages/flutter/test/widgets/widget_inspector_test.dart | 6 +++---
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/packages/flutter/lib/src/material/elevated_button.dart b/packages/flutter/lib/src/material/elevated_button.dart
index e1dbcf276c2..402fa84fb07 100644
--- a/packages/flutter/lib/src/material/elevated_button.dart
+++ b/packages/flutter/lib/src/material/elevated_button.dart
@@ -96,7 +96,7 @@ class ElevatedButton extends ButtonStyleButton {
     FocusNode? focusNode,
     bool autofocus = false,
     Clip clipBehavior = Clip.none,
-    required Widget child,
+    required Widget? child,
   }) : super(
     key: key,
     onPressed: onPressed,
diff --git a/packages/flutter/lib/src/widgets/basic.dart b/packages/flutter/lib/src/widgets/basic.dart
index ae404195559..7fb7481d1c7 100644
--- a/packages/flutter/lib/src/widgets/basic.dart
+++ b/packages/flutter/lib/src/widgets/basic.dart
@@ -7157,7 +7157,7 @@ class IgnorePointer extends SingleChildRenderObjectWidget {
 ///         height: 100.0,
 ///         child: ElevatedButton(
 ///           onPressed: () {},
-///           child: const Text('Lower'),
+///           child: null,
 ///         ),
 ///       ),
 ///       SizedBox(
@@ -7170,7 +7170,7 @@ class IgnorePointer extends SingleChildRenderObjectWidget {
 ///               primary: Colors.blue.shade200,
 ///             ),
 ///             onPressed: () {},
-///             child: const Text('Upper'),
+///             child: null,
 ///           ),
 ///         ),
 ///       ),
diff --git a/packages/flutter/test/material/material_test.dart b/packages/flutter/test/material/material_test.dart
index 5fa3d8078e4..df7ae5d788d 100644
--- a/packages/flutter/test/material/material_test.dart
+++ b/packages/flutter/test/material/material_test.dart
@@ -244,7 +244,7 @@ void main() {
                 onPressed: () {
                   pressed = true;
                 },
-                child: const Text('Button'),
+                child: null,
               ),
               const Material(
                 type: MaterialType.transparency,
diff --git a/packages/flutter/test/widgets/widget_inspector_test.dart b/packages/flutter/test/widgets/widget_inspector_test.dart
index 9ae3ad0b833..53c5d040682 100644
--- a/packages/flutter/test/widgets/widget_inspector_test.dart
+++ b/packages/flutter/test/widgets/widget_inspector_test.dart
@@ -287,7 +287,7 @@ class _TestWidgetInspectorService extends TestWidgetInspectorService {
       final GlobalKey topButtonKey = GlobalKey();
 
       Widget selectButtonBuilder(BuildContext context, VoidCallback onPressed) {
-        return Material(child: ElevatedButton(onPressed: onPressed, key: selectButtonKey, child: const Text('Button')));
+        return Material(child: ElevatedButton(onPressed: onPressed, key: selectButtonKey, child: null));
       }
       // State type is private, hence using dynamic.
       dynamic getInspectorState() => inspectorKey.currentState;
@@ -390,7 +390,7 @@ class _TestWidgetInspectorService extends TestWidgetInspectorService {
       final GlobalKey inspectorKey = GlobalKey();
 
       Widget selectButtonBuilder(BuildContext context, VoidCallback onPressed) {
-        return Material(child: ElevatedButton(onPressed: onPressed, key: selectButtonKey, child: const Text('Button')));
+        return Material(child: ElevatedButton(onPressed: onPressed, key: selectButtonKey, child: null));
       }
       // State type is private, hence using dynamic.
       dynamic getInspectorState() => inspectorKey.currentState;
@@ -590,7 +590,7 @@ class _TestWidgetInspectorService extends TestWidgetInspectorService {
 
       InspectorSelectButtonBuilder selectButtonBuilder(Key key) {
         return (BuildContext context, VoidCallback onPressed) {
-          return Material(child: ElevatedButton(onPressed: onPressed, key: key, child: const Text('Button')));
+          return Material(child: ElevatedButton(onPressed: onPressed, key: key, child: null));
         };
       }