Merge branch 'master' of https://github.com/flutter/samples into Update-platform_channels

Author: adarsh-technocrat

README.md

@@ -10,6 +10,21 @@ A collection of open source samples that illustrate best practices for
 The easiest way to browse through the samples in this repo (as well as a few others!)
 is the [visual samples index](https://flutter.github.io/samples).
 
+## Tip: minimize download size
+
+As this repository is quite big, you can use svn to download a single example.
+For example:
+
+```
+svn co https://github.com/flutter/samples/trunk/provider_shopper
+```
+
+You can also use a shallow clone to download just the latest revision:
+
+```
+git clone --depth 1 https://github.com/flutter/samples.git
+```
+
 ## Interested in contributing?
 
 See the [contributor's guide](CONTRIBUTING.md)!

experimental/desktop_photo_search/lib/main.dart

@@ -82,8 +82,8 @@ class UnsplashHomePage extends StatelessWidget {
           label: 'About ...',
           onClicked: () {
             showDialog<void>(
-                context: context,
-                builder: (context) => PolicyDialog(),
+              context: context,
+              builder: (context) => PolicyDialog(),
             );
           },
         ),

experimental/desktop_photo_search/lib/src/widgets/about_dialog.dart

@@ -45,7 +45,9 @@ class PolicyDialog extends StatelessWidget {
                     children: <TextSpan>[
                       TextSpan(
                         text: 'https://policies.google.com/terms',
-                        style: TextStyle(fontWeight: FontWeight.bold, color: Colors.lightBlue),
+                        style: TextStyle(
+                            fontWeight: FontWeight.bold,
+                            color: Colors.lightBlue),
                         recognizer: TapGestureRecognizer()
                           ..onTap = () async {
                             final url = 'https://policies.google.com/terms';
@@ -65,7 +67,9 @@ class PolicyDialog extends StatelessWidget {
                     children: <TextSpan>[
                       TextSpan(
                         text: 'https://unsplash.com/terms',
-                        style: TextStyle(fontWeight: FontWeight.bold, color: Colors.lightBlue),
+                        style: TextStyle(
+                            fontWeight: FontWeight.bold,
+                            color: Colors.lightBlue),
                         recognizer: TapGestureRecognizer()
                           ..onTap = () async {
                             final url = 'https://unsplash.com/terms';

experimental/veggieseasons/lib/data/preferences.dart

@@ -50,6 +50,12 @@ class Preferences extends ChangeNotifier {
     notifyListeners();
   }
 
+  Future<void> restoreDefaults() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.clear();
+    load();
+  }
+
   void load() {
     _loading = _loadFromSharedPrefs();
   }

experimental/veggieseasons/lib/screens/search.dart

@@ -8,7 +8,6 @@ import 'package:flutter/widgets.dart';
 import 'package:provider/provider.dart';
 import 'package:veggieseasons/data/app_state.dart';
 import 'package:veggieseasons/data/veggie.dart';
-import 'package:veggieseasons/widgets/search_bar.dart';
 import 'package:veggieseasons/widgets/veggie_headline.dart';
 
 class SearchScreen extends StatefulWidget {
@@ -49,7 +48,7 @@ class _SearchScreenState extends State<SearchScreen> with RestorationMixin {
   Widget _createSearchBox() {
     return Padding(
       padding: const EdgeInsets.all(8),
-      child: SearchBar(
+      child: CupertinoSearchTextField(
         controller: controller.value,
         focusNode: focusNode,
       ),

experimental/veggieseasons/lib/screens/settings.dart

@@ -213,6 +213,44 @@ class SettingsScreen extends StatelessWidget {
     );
   }
 
+  SettingsItem _buildRestoreDefaultsItem(
+      BuildContext context, Preferences prefs) {
+    return SettingsItem(
+      label: 'Restore Defaults',
+      icon: SettingsIcon(
+        backgroundColor: CupertinoColors.systemRed,
+        icon: Styles.resetIcon,
+      ),
+      content: SettingsNavigationIndicator(),
+      onPress: () {
+        showCupertinoDialog<void>(
+          context: context,
+          builder: (context) => CupertinoAlertDialog(
+            title: Text('Are you sure?'),
+            content: Text(
+              'Are you sure you want to reset the current settings?',
+            ),
+            actions: <Widget>[
+              CupertinoDialogAction(
+                isDestructiveAction: true,
+                child: Text('Yes'),
+                onPressed: () async {
+                  await prefs.restoreDefaults();
+                  Navigator.pop(context);
+                },
+              ),
+              CupertinoDialogAction(
+                isDefaultAction: true,
+                child: Text('No'),
+                onPressed: () => Navigator.pop(context),
+              )
+            ],
+          ),
+        );
+      },
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final prefs = Provider.of<Preferences>(context);
@@ -238,6 +276,7 @@ class SettingsScreen extends StatelessWidget {
                         items: [
                           _buildCaloriesItem(context, prefs),
                           _buildCategoriesItem(context, prefs),
+                          _buildRestoreDefaultsItem(context, prefs),
                         ],
                       ),
                     ],

experimental/veggieseasons/lib/styles.dart

@@ -120,20 +120,12 @@ abstract class Styles {
           ? CupertinoColors.lightBackgroundGray
           : null;
 
-  static Color searchBackground(CupertinoThemeData themeData) =>
-      themeData.barBackgroundColor;
-
   static const frostedBackground = Color(0xccf8f8f8);
 
   static const closeButtonUnpressed = Color(0xff101010);
 
   static const closeButtonPressed = Color(0xff808080);
 
-  static TextStyle searchText(CupertinoThemeData themeData) =>
-      themeData.textTheme.textStyle.copyWith(
-        fontSize: 14,
-      );
-
   static TextStyle settingsItemSubtitleText(CupertinoThemeData themeData) =>
       themeData.textTheme.textStyle.copyWith(
         fontSize: 12,
@@ -206,7 +198,7 @@ abstract class Styles {
           : CupertinoColors.darkBackgroundGray;
 
   static Color settingsLineation(Brightness brightness) =>
-      brightness == Brightness.light ? Color(0xffbcbbc1) : Color(0xFF4C4B4B);
+      brightness == Brightness.light ? Color(0xffbcbbc1) : Color(0xff4c4b4b);
 
   static const Color settingsBackground = Color(0xffefeff4);
 
@@ -222,6 +214,12 @@ abstract class Styles {
     fontPackage: CupertinoIcons.iconFontPackage,
   );
 
+  static const resetIcon = IconData(
+    0xf4c4,
+    fontFamily: CupertinoIcons.iconFont,
+    fontPackage: CupertinoIcons.iconFontPackage,
+  );
+
   static const calorieIcon = IconData(
     0xf3bb,
     fontFamily: CupertinoIcons.iconFont,
@@ -238,5 +236,5 @@ abstract class Styles {
 
   static const ColorFilter desaturatedColorFilter =
       // 222222 is a random color that has low color saturation.
-      ColorFilter.mode(Color(0xFF222222), BlendMode.saturation);
+      ColorFilter.mode(Color(0xff222222), BlendMode.saturation);
 }

experimental/veggieseasons/lib/widgets/search_bar.dart

@@ -12,7 +12,7 @@ would do.
 Show how to perform:
 
 - Widget Testing,
-- Flutter Driver(Integration) Testing,
+- Integration Testing,
 - Performance Testing, and
 - State Management Testing using the [Provider][] package.
 
@@ -27,20 +27,15 @@ The Flutter SDK can run unit tests and widget tests in a virtual machine, withou
 ### To run tests on a physical device/emulator:
 - Widget Tests:
   - Run `flutter run test/<file_path>`
-- Flutter Driver Tests:
-  - Run `flutter drive --target=test_driver/<file_path>`
-    - eg. `flutter drive --target=test_driver/app.dart` to run the test in `test_driver/app_test.dart`
+- Integration Tests:
+  - Run `flutter drive --driver=integration_test/driver.dart --target=integration_test/app_test.dart`
 - Performance Tests:
-  - Run `flutter drive --target=test_driver/app.dart --driver test_driver/perf_test.dart --profile --trace-startup`
+  - Run `flutter drive --driver=integration_test/driver.dart --target=integration_test/perf_test.dart --profile --trace-startup`
     - Using a physical device and running performance tests in profile mode is recommended.
     - The `--trace-startup` option is used to avoid flushing older timeline events when the timeline gets long.
-- [E2E](https://pub.dev/packages/e2e) Tests:
-  - Run `flutter drive --target test/perf_test_e2e.dart --driver test_driver/e2e_test.dart --profile`
-  - Similar to the above but the test is driven on device.
-  - You may also reference [E2E manual](https://github.com/flutter/plugins/tree/master/packages/e2e#firebase-test-lab) for how to run such test on Firebase Test Lab.
 - State Management Tests:
-  - For testing state using Flutter Driver
-    - Run `flutter drive --target=test_driver/<file_path>`
+  - For testing state using Flutter Integration Tests
+    - Run `flutter drive --driver=integration_test/driver.dart --target=integration_test/state_mgmt_test.dart`
 
 ### To generate test coverage report:
 - Install the `lcov` tool:
@@ -53,9 +48,9 @@ The Flutter SDK can run unit tests and widget tests in a virtual machine, withou
 - Open `coverage/index/index.html` in your preferred browser.
 
 ### CI/CD
-- Refer [.travis.yml](../.travis.yml) and the [tool](../tool) directory to see how to test Flutter projects using Travis-CI.
+- Refer [.github](../.github) and the [tool](../tool) directory to see how to test Flutter projects using GitHub Actions.
 
-Note that we aren't performing Flutter Driver tests using the Travis tool in this repo. That is because it's recommended to use physical devices to run Driver tests. You can use [Firebase Test Lab](https://firebase.google.com/docs/test-lab), [Codemagic](https://codemagic.io/) or any platform of your choice to do that.
+Note that tools like GitHub Actions can't run tests on a physical device, which is required to run integration tests. Instead, you can use [Firebase Test Lab](https://firebase.google.com/docs/test-lab), [Codemagic](https://docs.codemagic.io/testing/aws/) or any platform of your choice to do that.
 
 ## Questions/issues