floating widget changes & introscreen changes

Author: Sandip Kakadiya

lib/components/floating_widget/gf_floating_widget.dart

@@ -61,26 +61,23 @@ class _GFFloatingWidgetState extends State<GFFloatingWidget> {
             child: widget.body ?? Container(),
           ),
           Positioned(
-              child: Container(
-            height: MediaQuery.of(context).size.height,
-            width: MediaQuery.of(context).size.width,
-            color: widget.showblurness
-                ? widget.blurnessColor ?? Colors.black54
-                : null,
-            child: Stack(
-              children: <Widget>[
-                Positioned(
-                  top: widget.verticalPosition != null
-                      ? widget.verticalPosition
-                      : 0.0,
-                  left: widget.horizontalPosition != null
-                      ? widget.horizontalPosition
-                      : 0.0,
-                  child: widget.child ?? Container(),
-                )
-              ],
+            child: Container(
+              height: MediaQuery.of(context).size.height,
+              width: MediaQuery.of(context).size.width,
+              color: widget.showblurness
+                  ? widget.blurnessColor ?? Colors.black54
+                  : null,
+              child: Stack(
+                children: <Widget>[
+                  Positioned(
+                    top: widget.verticalPosition ?? 0.0,
+                    left: widget.horizontalPosition ?? 0.0,
+                    child: widget.child ?? Container(),
+                  )
+                ],
+              ),
             ),
-          ))
+          )
         ],
       );
 }

lib/components/intro_screen/gf_intro_screen.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:getwidget/getwidget.dart';
 
 class GFIntroScreen extends StatefulWidget {
+  /// Presents informative screens to users with various posibilities in customization.
   const GFIntroScreen({
     Key key,
     @required this.pageController,

lib/components/intro_screen/gf_intro_screen_bottom_navigation_bar.dart

@@ -199,6 +199,14 @@ class _GFIntroScreenBottomNavigationBarState
     super.initState();
   }
 
+  @override
+  void dispose() {
+    if (_pageController != null) {
+      _pageController.dispose();
+    }
+    super.dispose();
+  }
+
   void onForwardButton() {
     widget.pageController.nextPage(
         duration: const Duration(milliseconds: 500), curve: Curves.linear);