hilangin appbar pas discroll

lib/homepage.dart

 import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
 import 'package:google_fonts/google_fonts.dart';
 import 'package:medapp_eksad/api/setting_api.dart';
 import 'package:medapp_eksad/appbar/appbar_home.dart';
@@ -51,6 +52,55 @@ class _HomePageState extends State<HomePage> {
         curve: Curves.fastLinearToSlowEaseIn);
   }
 
+  bool _showAppbar = true;
+  //ScrollController controller2 = new ScrollController();
+  bool _show = true;
+  bool isScrollingDown = false;
+
+  @override
+  void initState() {
+    super.initState();
+    myScroll();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    controller2.removeListener(() {});
+    super.dispose();
+  }
+
+  void showBottomBar() {
+    setState(() {
+      _show = true;
+    });
+  }
+
+  void hideBottomBar() {
+    setState(() {
+      _show = false;
+    });
+  }
+
+  void myScroll() async {
+    controller2.addListener(() {
+      if (controller2.position.userScrollDirection == ScrollDirection.reverse) {
+        if (!isScrollingDown) {
+          isScrollingDown = true;
+          _showAppbar = false;
+          hideBottomBar();
+        }
+      }
+      if (controller2.position.userScrollDirection == ScrollDirection.forward) {
+        if (isScrollingDown) {
+          isScrollingDown = false;
+          _showAppbar = true;
+          showBottomBar();
+        }
+      }
+    });
+  }
+
   final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
   @override
   Widget build(BuildContext context) {
@@ -59,10 +109,15 @@ class _HomePageState extends State<HomePage> {
     return Scaffold(
       key: _scaffoldKey,
       floatingActionButton: WAChat(),
-      appBar: ResponsiveWidget.isSmallScreen(context)
+      appBar: _showAppbar
+          ? ResponsiveWidget.isSmallScreen(context)
               ? AppBarKecil()
               : AppbarHomeLarge(screenSize, context, Colors.blue, Colors.black,
-              Colors.black, Colors.black, Colors.black),
+                  Colors.black, Colors.black, Colors.black)
+          : PreferredSize(
+              child: Container(),
+              preferredSize: Size(0.0, 0.0),
+            ),
       drawer: const DrawerMedApp(),
       body: ResponsiveWidget.isSmallScreen(context)
           ? Stack(

lib/screen/about_us.dart

 import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
 import 'package:google_fonts/google_fonts.dart';
 import 'package:medapp_eksad/api/setting_api.dart';
 import 'package:medapp_eksad/appbar/appbar_home.dart';
@@ -51,6 +52,55 @@ class _AboutUsState extends State<AboutUs> {
         curve: Curves.fastLinearToSlowEaseIn);
   }
 
+  bool _showAppbar = true;
+  //ScrollController controller2 = new ScrollController();
+  bool _show = true;
+  bool isScrollingDown = false;
+
+  @override
+  void initState() {
+    super.initState();
+    myScroll();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    controller2.removeListener(() {});
+    super.dispose();
+  }
+
+  void showBottomBar() {
+    setState(() {
+      _show = true;
+    });
+  }
+
+  void hideBottomBar() {
+    setState(() {
+      _show = false;
+    });
+  }
+
+  void myScroll() async {
+    controller2.addListener(() {
+      if (controller2.position.userScrollDirection == ScrollDirection.reverse) {
+        if (!isScrollingDown) {
+          isScrollingDown = true;
+          _showAppbar = false;
+          hideBottomBar();
+        }
+      }
+      if (controller2.position.userScrollDirection == ScrollDirection.forward) {
+        if (isScrollingDown) {
+          isScrollingDown = false;
+          _showAppbar = true;
+          showBottomBar();
+        }
+      }
+    });
+  }
+
   final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
   @override
   Widget build(BuildContext context) {
@@ -59,10 +109,15 @@ class _AboutUsState extends State<AboutUs> {
     return Scaffold(
       key: _scaffoldKey,
       floatingActionButton: WAChat(),
-      appBar: ResponsiveWidget.isSmallScreen(context)
+      appBar: _showAppbar
+        ?ResponsiveWidget.isSmallScreen(context)
           ? AppBarKecil()
           : AppbarHomeLarge(screenSize, context, Colors.black, Colors.blue,
-              Colors.black, Colors.black, Colors.black),
+              Colors.black, Colors.black, Colors.black)
+      :PreferredSize(
+        child: Container(),
+        preferredSize: Size(0.0, 0.0),
+      ),
       drawer: const DrawerMedApp(),
       body: ResponsiveWidget.isSmallScreen(context)
           ? Stack(

lib/screen/contact_us/contact_us.dart

 import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
 import 'package:google_fonts/google_fonts.dart';
 import 'package:medapp_eksad/api/setting_api.dart';
 import 'package:medapp_eksad/appbar/appbar_home.dart';
@@ -45,6 +46,55 @@ class _ContactUsState extends State<ContactUs> {
         curve: Curves.fastLinearToSlowEaseIn);
   }
 
+  bool _showAppbar = true;
+  //ScrollController controller2 = new ScrollController();
+  bool _show = true;
+  bool isScrollingDown = false;
+
+  @override
+  void initState() {
+    super.initState();
+    myScroll();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    controller2.removeListener(() {});
+    super.dispose();
+  }
+
+  void showBottomBar() {
+    setState(() {
+      _show = true;
+    });
+  }
+
+  void hideBottomBar() {
+    setState(() {
+      _show = false;
+    });
+  }
+
+  void myScroll() async {
+    controller2.addListener(() {
+      if (controller2.position.userScrollDirection == ScrollDirection.reverse) {
+        if (!isScrollingDown) {
+          isScrollingDown = true;
+          _showAppbar = false;
+          hideBottomBar();
+        }
+      }
+      if (controller2.position.userScrollDirection == ScrollDirection.forward) {
+        if (isScrollingDown) {
+          isScrollingDown = false;
+          _showAppbar = true;
+          showBottomBar();
+        }
+      }
+    });
+  }
+
   final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   @override
   Widget build(BuildContext context) {
@@ -52,10 +102,15 @@ class _ContactUsState extends State<ContactUs> {
     var screenSize = MediaQuery.of(context).size;
     return Scaffold(
         key: _scaffoldKey,
-        appBar: ResponsiveWidget.isSmallScreen(context)
+        appBar: _showAppbar
+        ?ResponsiveWidget.isSmallScreen(context)
             ? AppBarKecil()
             : AppbarHomeLarge(screenSize, context, Colors.black, Colors.black,
-                Colors.black, Colors.black, Colors.blue),
+                Colors.black, Colors.black, Colors.blue)
+        :PreferredSize(
+          child: Container(),
+          preferredSize: Size(0.0, 0.0),
+        ),
         drawer: const DrawerMedApp(),
         body: ResponsiveWidget.isSmallScreen(context)
             ? Stack(

lib/screen/solution.dart

 import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
 import 'package:google_fonts/google_fonts.dart';
 import 'package:medapp_eksad/api/setting_api.dart';
 import 'package:medapp_eksad/appbar/appbar_home.dart';
@@ -40,6 +41,55 @@ class _SolutionsState extends State<Solutions> {
         curve: Curves.fastLinearToSlowEaseIn);
   }
 
+  bool _showAppbar = true;
+  //ScrollController controller2 = new ScrollController();
+  bool _show = true;
+  bool isScrollingDown = false;
+
+  @override
+  void initState() {
+    super.initState();
+    myScroll();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    controller2.removeListener(() {});
+    super.dispose();
+  }
+
+  void showBottomBar() {
+    setState(() {
+      _show = true;
+    });
+  }
+
+  void hideBottomBar() {
+    setState(() {
+      _show = false;
+    });
+  }
+
+  void myScroll() async {
+    controller2.addListener(() {
+      if (controller2.position.userScrollDirection == ScrollDirection.reverse) {
+        if (!isScrollingDown) {
+          isScrollingDown = true;
+          _showAppbar = false;
+          hideBottomBar();
+        }
+      }
+      if (controller2.position.userScrollDirection == ScrollDirection.forward) {
+        if (isScrollingDown) {
+          isScrollingDown = false;
+          _showAppbar = true;
+          showBottomBar();
+        }
+      }
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     setPageTitle('Our Solutions', context);
@@ -47,10 +97,15 @@ class _SolutionsState extends State<Solutions> {
     return Scaffold(
       key: _scaffoldKey,
       floatingActionButton: WAChat(),
-      appBar: ResponsiveWidget.isSmallScreen(context)
+      appBar: _showAppbar
+        ?ResponsiveWidget.isSmallScreen(context)
           ? AppBarKecil()
           : AppbarHomeLarge(screenSize, context, Colors.black, Colors.black,
-              Colors.blue, Colors.black, Colors.black),
+              Colors.blue, Colors.black, Colors.black)
+      :PreferredSize(
+        child: Container(),
+        preferredSize: Size(0.0, 0.0),
+      ),
       drawer: const DrawerMedApp(),
       body: ResponsiveWidget.isSmallScreen(context)
           ? Stack(