OnBoarding Bottom Bar: Show a 'Get Started' on the last page

lib/screens/onboarding_screens.dart

@@ -16,6 +16,8 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
   var pageController = PageController();
   int _currentPageIndex = 0;
 
+  final _bottomBarHeight = 50.0;
+
   Widget _buildPage(String text) {
     return Column(
       children: <Widget>[
@@ -43,7 +45,9 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
       },
     );
 
-    var bottomBar = Row(
+    Widget bottomBar;
+    if (_currentPageIndex != pages.length - 1) {
+      var row = Row(
         children: <Widget>[
           OnBoardingBottomButton(text: "Skip", onPressed: _finish),
           Expanded(
@@ -62,6 +66,30 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
         ],
       );
 
+      bottomBar = Container(
+        child: SizedBox(
+          width: double.infinity,
+          height: _bottomBarHeight,
+          child: row,
+        ),
+        color: Colors.grey[200],
+      );
+    } else {
+      bottomBar = SizedBox(
+        width: double.infinity,
+        height: _bottomBarHeight,
+        child: RaisedButton(
+          child: Text(
+            "Get Started",
+            textAlign: TextAlign.center,
+            style: Theme.of(context).textTheme.button,
+          ),
+          color: Theme.of(context).primaryColor,
+          onPressed: _finish,
+        ),
+      );
+    }
+
     return Scaffold(
       body: Container(
         width: double.infinity,
@@ -69,7 +97,7 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
         child: pageView,
         padding: EdgeInsets.all(16.0),
       ),
-      bottomNavigationBar: Container(child: bottomBar, color: Colors.grey[200]),
+      bottomNavigationBar: bottomBar,
     );
   }