feat: add foldable example (#269)

 # This file tracks properties of this Flutter project.
 # Used by Flutter tool to assess capabilities and perform upgrades etc.
 #
-# This file should be version controlled and should not be manually edited.
+# This file should be version controlled.
 
 version:
-  revision: 8cb266511897d79e6d7d60c08c0e425f4cdaf433
-  channel: master
+  revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+  channel: stable
 
 project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+    - platform: android
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+    - platform: ios
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+    - platform: linux
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+    - platform: macos
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+    - platform: web
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+    - platform: windows
+      create_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+      base_revision: 4f9d92fbbdf072a70a70d2179a9f87392b94104c
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

@@ -9,3 +9,5 @@ GeneratedPluginRegistrant.java
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
 key.properties
+**/*.keystore
+**/*.jks

@@ -26,21 +26,29 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion flutter.compileSdkVersion
+    ndkVersion flutter.ndkVersion
 
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
     }
 
-    lintOptions {
-        disable 'InvalidPackage'
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
     }
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.example"
-        minSdkVersion 16
-        targetSdkVersion 29
+        applicationId "jb.example.example"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
+        minSdkVersion flutter.minSdkVersion
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.example">
-    <!-- Flutter needs it to communicate with the running application
+    package="jb.example.example">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->
     <uses-permission android:name="android.permission.INTERNET"/>

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.example">
+    package="jb.example.example">
    <application
         android:label="example"
+        android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
@@ -18,15 +20,6 @@
               android:name="io.flutter.embedding.android.NormalTheme"
               android:resource="@style/NormalTheme"
               />
-            <!-- Displays an Android View that continues showing the launch screen
-                 Drawable until Flutter paints its first frame, then this splash
-                 screen fades out. A splash screen is useful to avoid any visual
-                 gap between the end of Android's launch screen and the painting of
-                 Flutter's first frame. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.SplashScreenDrawable"
-              android:resource="@drawable/launch_background"
-              />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>

-package com.example.example
+package jb.example.example
 
 import io.flutter.embedding.android.FlutterActivity
 

@@ -3,7 +3,7 @@
     <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
     <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
         <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
+             the Flutter engine draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.

@@ -3,7 +3,7 @@
     <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
     <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
+             the Flutter engine draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.example">
-    <!-- Flutter needs it to communicate with the running application
+    package="jb.example.example">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->
     <uses-permission android:name="android.permission.INTERNET"/>

 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.6.10'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath 'com.android.tools.build:gradle:7.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
@@ -14,7 +14,7 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 

-#Fri Jun 23 08:50:38 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip

@@ -10,7 +10,11 @@ class FloatingModal extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return SafeArea(
+    // DisplayFeatureSubScreen allows to display the modal in just
+    // one sub-screen of a foldable device.
+    return DisplayFeatureSubScreen(
+      anchorPoint: Offset.infinite,
+      child: SafeArea(
         minimum: const EdgeInsets.symmetric(horizontal: 20, vertical: 20),
         child: Material(
           color: backgroundColor,
@@ -18,6 +22,7 @@ class FloatingModal extends StatelessWidget {
           borderRadius: BorderRadius.circular(12),
           child: child,
         ),
+      ),
     );
   }
 }

+import 'package:flutter/material.dart';
+import 'package:sheet/sheet.dart';
+
+class FoldableScreenFloatingSheet extends StatefulWidget {
+  @override
+  _FitSheetState createState() => _FitSheetState();
+}
+
+class _FitSheetState extends State<FoldableScreenFloatingSheet> {
+  final SheetController controller = SheetController();
+
+  @override
+  void initState() {
+    Future<void>.delayed(const Duration(milliseconds: 400), animateSheet);
+
+    super.initState();
+  }
+
+  void animateSheet() {
+    controller.relativeAnimateTo(1,
+        duration: const Duration(milliseconds: 400), curve: Curves.easeOut);
+  }
+
+  @override
+  void dispose() {
+    controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return DisplayFeatureSubScreen(
+      anchorPoint: Offset.infinite,
+      child: Sheet.raw(
+        physics: const SnapSheetPhysics(
+          parent: BouncingSheetPhysics(overflowViewport: false),
+          stops: <double>[0, 1],
+        ),
+        padding: const EdgeInsets.all(20),
+        child: Container(
+          height: 200,
+          alignment: Alignment.topCenter,
+          child: Container(
+            height: 200,
+            width: double.infinity,
+            child: Material(
+              elevation: 1,
+              shape: RoundedRectangleBorder(
+                borderRadius: BorderRadius.circular(12),
+              ),
+              color: Colors.grey[900],
+            ),
+          ),
+        ),
+        controller: controller,
+      ),
+    );
+  }
+}

@@ -270,6 +270,14 @@ class RouteExamplePage extends StatelessWidget {
                       ),
                     ),
                     ListTile(
+                      title: const Text('Foldable Screen - Fit'),
+                      onTap: () => Navigator.of(context).push(
+                        FloatingSheetRoute<void>(
+                          builder: (BuildContext context) => const ModalFit(),
+                        ),
+                      ),
+                    ),
+                    ListTile(
                       title: const Text('Dialog Modal for tablet - Expanded'),
                       onTap: () => Navigator.of(context).push(
                         DialogSheetRoute<void>(

@@ -12,6 +12,7 @@ import 'examples/sheet/fit_resizable_sheet.dart';
 import 'examples/sheet/fit_sheet.dart';
 import 'examples/sheet/fit_sheet_snap.dart';
 import 'examples/sheet/floating_sheet.dart';
+import 'examples/sheet/fold_screen_sheet.dart';
 import 'examples/sheet/resizable_sheet.dart';
 import 'examples/sheet/scrollable_sheet.dart';
 import 'examples/sheet/scrollable_snap_sheet.dart';
@@ -55,6 +56,7 @@ class SheetExamplesPage extends StatelessWidget {
             ExampleTile.sheet(
                 'Fit, Resizable and Bouncing sheet', FitResizableSheet()),
             ExampleTile.sheet('Textfield sheet', TextFieldSheet()),
+            ExampleTile.sheet('Foldable screen', FoldableScreenFloatingSheet()),
             const ExampleTile(
                 title: 'Customizable sheet', page: SheetConfigurationPage()),
             const SectionTitle('SHOWCASE'),