0001-Made-Stepper-Stepper-Size-Dynamic.patch

From ad18b73407a174883ffe6be11db210226cc5a074 Mon Sep 17 00:00:00 2001
From: Sanket Chaudhari <chaudharisanket2000@gmail.com>
Date: Mon, 22 Oct 2018 04:29:51 +0530
Subject: [PATCH] Made Stepper, Stepper Size Dynamic

---
 .../flutter/lib/src/material/stepper.dart     | 20 +++++++++----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/packages/flutter/lib/src/material/stepper.dart b/packages/flutter/lib/src/material/stepper.dart
index ccce36671..8289a034a 100644
--- a/packages/flutter/lib/src/material/stepper.dart
+++ b/packages/flutter/lib/src/material/stepper.dart
@@ -513,11 +513,14 @@ class _StepperState extends State<Stepper> with TickerProviderStateMixin {
   }
 
   Widget _buildVertical() {
-    final List<Widget> children = <Widget>[];
 
-    for (int i = 0; i < widget.steps.length; i += 1) {
-      children.add(
-        Column(
+    return ListView.builder(
+      shrinkWrap: true,
+      itemCount: widget.steps.length,
+      itemBuilder: (BuildContext context, int i){
+
+        i < _keys.length ? _keys[i] : _keys.add(GlobalKey());
+        return Column(
           key: _keys[i],
           children: <Widget>[
             InkWell(
@@ -537,13 +540,8 @@ class _StepperState extends State<Stepper> with TickerProviderStateMixin {
             ),
             _buildVerticalBody(i)
           ]
-        )
-      );
-    }
-
-    return ListView(
-      shrinkWrap: true,
-      children: children,
+        );
+      }
     );
   }
 
-- 
2.19.1