implemented using_stepper example

using_stepper/lib/main.dart

@@ -0,0 +1,91 @@
+import 'package:flutter/material.dart';
+
+void main() {
+  runApp(new MaterialApp(
+      // Title
+      title: "Simple Material App",
+      // Home
+      home: new MyHome()));
+}
+
+class MyHome extends StatefulWidget {
+  @override
+  MyHomeState createState() => new MyHomeState();
+}
+
+class MyHomeState extends State<MyHome> {
+  // init the step to 0th position
+  int current_step = 0;
+  List<Step> my_steps = [
+    new Step(
+        // Title of the Step
+        title: new Text("Step 1"),
+        // Content, it can be any widget here. Using basic Text for this example
+        content: new Text("Hello!"),
+        isActive: true),
+    new Step(
+        title: new Text("Step 2"),
+        content: new Text("World!"),
+        // You can change the style of the step icon i.e number, editing, etc.
+        state: StepState.editing,
+        isActive: true),
+    new Step(
+        title: new Text("Step 3"),
+        content: new Text("Hello World!"),
+        isActive: true),
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      // Appbar
+      appBar: new AppBar(
+        // Title
+        title: new Text("Simple Material App"),
+      ),
+      // Body
+      body: new Container(
+          child: new Stepper(
+        // Using a variable here for handling the currentStep
+        currentStep: this.current_step,
+        // List the steps you would like to have
+        steps: my_steps,
+        // Define the type of Stepper style
+        type: StepperType.vertical,
+        // Know the step that is tapped
+        onStepTapped: (step) {
+          // Log function call
+          print("onStepTapped : " + step.toString());
+        },
+        onStepCancel: () {
+          // On hitting cancel button, change the state
+          setState(() {
+            // update the variable handling the current step value
+            // going back one step i.e subtracting 1, until its 0
+            if (current_step > 0) {
+              current_step = current_step - 1;
+            } else {
+              current_step = 0;
+            }
+          });
+          // Log function call
+          print("onStepCancel : " + current_step.toString());
+        },
+        // On hitting continue button, change the state
+        onStepContinue: () {
+          setState(() {
+            // update the variable handling the current step value
+            // going back one step i.e adding 1, until its the length of the step
+            if (current_step < my_steps.length - 1) {
+              current_step = current_step + 1;
+            } else {
+              current_step = 0;
+            }
+          });
+          // Log function call
+          print("onStepContinue : " + current_step.toString());
+        },
+      )),
+    );
+  }
+}