Fix bug with matrix.mapRect (#61)

Fix a bug in the matrix transformation applied to a rect. We now use the MatrixUtils class from Flutter.

CHANGELOG.md

@@ -1,3 +1,9 @@
+## [0.3.5]
+- Fix a bug with a wrongly clipped rectangle. 
+
+## [0.3.4]
+- Fix a bug with dashed path
+
 ## [0.3.3]
 - Fix a bug with rounded rectangle shape
 

README.md

@@ -49,6 +49,9 @@ class MyApp extends StatelessWidget {
 ### Specify a custom `AnimationController`
 This example shows how to take full control over the animation by providing your own `AnimationController`.
 
+With a custom `AnimationController` you have a rich API to play the animation in various ways: start and stop the animation when you want,
+ play forward or backward, loop between specifics points...  
+
 ```dart
 import 'package:flutter/material.dart';
 import 'package:lottie/lottie.dart';
@@ -101,6 +104,8 @@ class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
 }
 ```
 
+[See this file](https://github.com/xvrh/lottie-flutter/blob/master/example/lib/examples/animation_full_control.dart) for a more comprehensive example.
+
 ### Control the size of the Widget
 The `Lottie` widget takes the same arguments and have the same behavior as the `Image` widget
 in term of controlling its size.

README.template.md

@@ -23,10 +23,15 @@ import 'example/lib/examples/main.dart';
 ### Specify a custom `AnimationController`
 This example shows how to take full control over the animation by providing your own `AnimationController`.
 
+With a custom `AnimationController` you have a rich API to play the animation in various ways: start and stop the animation when you want,
+ play forward or backward, loop between specifics points...  
+
 ```dart
 import 'example/lib/examples/animation_controller.dart';
 ```
 
+[See this file](https://github.com/xvrh/lottie-flutter/blob/master/example/lib/examples/animation_full_control.dart) for a more comprehensive example.
+
 ### Control the size of the Widget
 The `Lottie` widget takes the same arguments and have the same behavior as the `Image` widget
 in term of controlling its size.

example/ios/Flutter/Debug.xcconfig

@@ -1 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
 #include "Generated.xcconfig"

example/ios/Flutter/Release.xcconfig

@@ -1 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
 #include "Generated.xcconfig"

example/ios/Podfile

@@ -0,0 +1,87 @@
+# Uncomment this line to define a global platform for your project
+# platform :ios, '9.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def parse_KV_file(file, separator='=')
+  file_abs_path = File.expand_path(file)
+  if !File.exists? file_abs_path
+    return [];
+  end
+  generated_key_values = {}
+  skip_line_start_symbols = ["#", "/"]
+  File.foreach(file_abs_path) do |line|
+    next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
+    plugin = line.split(pattern=separator)
+    if plugin.length == 2
+      podname = plugin[0].strip()
+      path = plugin[1].strip()
+      podpath = File.expand_path("#{path}", file_abs_path)
+      generated_key_values[podname] = podpath
+    else
+      puts "Invalid plugin specification: #{line}"
+    end
+  end
+  generated_key_values
+end
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  # Flutter Pod
+
+  copied_flutter_dir = File.join(__dir__, 'Flutter')
+  copied_framework_path = File.join(copied_flutter_dir, 'Flutter.framework')
+  copied_podspec_path = File.join(copied_flutter_dir, 'Flutter.podspec')
+  unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path)
+    # Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet.
+    # That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration.
+    # CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist.
+
+    generated_xcode_build_settings_path = File.join(copied_flutter_dir, 'Generated.xcconfig')
+    unless File.exist?(generated_xcode_build_settings_path)
+      raise "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+    end
+    generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path)
+    cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR'];
+
+    unless File.exist?(copied_framework_path)
+      FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir)
+    end
+    unless File.exist?(copied_podspec_path)
+      FileUtils.cp(File.join(cached_framework_dir, 'Flutter.podspec'), copied_flutter_dir)
+    end
+  end
+
+  # Keep pod path relative so it can be checked into Podfile.lock.
+  pod 'Flutter', :path => 'Flutter'
+
+  # Plugin Pods
+
+  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
+  # referring to absolute paths on developers' machines.
+  system('rm -rf .symlinks')
+  system('mkdir -p .symlinks/plugins')
+  plugin_pods = parse_KV_file('../.flutter-plugins')
+  plugin_pods.each do |name, path|
+    symlink = File.join('.symlinks', 'plugins', name)
+    File.symlink(path, symlink)
+    pod name, :path => File.join(symlink, 'ios')
+  end
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      config.build_settings['ENABLE_BITCODE'] = 'NO'
+    end
+  end
+end

example/ios/Podfile.lock

@@ -0,0 +1,28 @@
+PODS:
+  - Flutter (1.0.0)
+  - path_provider (0.0.1):
+    - Flutter
+  - path_provider_macos (0.0.1):
+    - Flutter
+
+DEPENDENCIES:
+  - Flutter (from `Flutter`)
+  - path_provider (from `.symlinks/plugins/path_provider/ios`)
+  - path_provider_macos (from `.symlinks/plugins/path_provider_macos/ios`)
+
+EXTERNAL SOURCES:
+  Flutter:
+    :path: Flutter
+  path_provider:
+    :path: ".symlinks/plugins/path_provider/ios"
+  path_provider_macos:
+    :path: ".symlinks/plugins/path_provider_macos/ios"
+
+SPEC CHECKSUMS:
+  Flutter: 0e3d915762c693b495b44d77113d4970485de6ec
+  path_provider: fb74bd0465e96b594bb3b5088ee4a4e7bb1f2a9d
+  path_provider_macos: f760a3c5b04357c380e2fddb6f9db6f3015897e0
+
+PODFILE CHECKSUM: c34e2287a9ccaa606aeceab922830efb9a6ff69a
+
+COCOAPODS: 1.9.1

example/ios/Runner.xcodeproj/project.pbxproj

@@ -9,11 +9,8 @@
 /* Begin PBXBuildFile section */
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
-		3B80C3941E831B6300D905FE /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; };
-		3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		4E7FB8175FD7E724C16AD66F /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3978ECE970E899926A99EA4E /* Pods_Runner.framework */; };
 		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
-		9705A1C61CF904A100538489 /* Flutter.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; };
-		9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
@@ -26,8 +23,6 @@
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
-				3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */,
-				9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */,
 			);
 			name = "Embed Frameworks";
 			runOnlyForDeploymentPostprocessing = 0;
@@ -37,14 +32,16 @@
 /* Begin PBXFileReference section */
 		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
 		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		1B497423C23FD55DD0B8C378 /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
+		31ACBCF01D379565237D9814 /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
+		3978ECE970E899926A99EA4E /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
-		3B80C3931E831B6300D905FE /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/App.framework; sourceTree = "<group>"; };
+		5A699D4B67473B61D811D350 /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
 		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
 		74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
 		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
 		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
-		9740EEBA1CF902C7004384FC /* Flutter.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Flutter.framework; path = Flutter/Flutter.framework; sourceTree = "<group>"; };
 		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		97C146FB1CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
 		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
@@ -57,20 +54,36 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				9705A1C61CF904A100538489 /* Flutter.framework in Frameworks */,
-				3B80C3941E831B6300D905FE /* App.framework in Frameworks */,
+				4E7FB8175FD7E724C16AD66F /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		14B9AAB3E57437F7B9E442AA /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				1B497423C23FD55DD0B8C378 /* Pods-Runner.debug.xcconfig */,
+				31ACBCF01D379565237D9814 /* Pods-Runner.release.xcconfig */,
+				5A699D4B67473B61D811D350 /* Pods-Runner.profile.xcconfig */,
+			);
+			name = Pods;
+			path = Pods;
+			sourceTree = "<group>";
+		};
+		3E6BFE152BA6E928D3C57CB7 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				3978ECE970E899926A99EA4E /* Pods_Runner.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
 		9740EEB11CF90186004384FC /* Flutter */ = {
 			isa = PBXGroup;
 			children = (
-				3B80C3931E831B6300D905FE /* App.framework */,
 				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
-				9740EEBA1CF902C7004384FC /* Flutter.framework */,
 				9740EEB21CF90195004384FC /* Debug.xcconfig */,
 				7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
 				9740EEB31CF90195004384FC /* Generated.xcconfig */,
@@ -84,6 +97,8 @@
 				9740EEB11CF90186004384FC /* Flutter */,
 				97C146F01CF9000F007C117D /* Runner */,
 				97C146EF1CF9000F007C117D /* Products */,
+				14B9AAB3E57437F7B9E442AA /* Pods */,
+				3E6BFE152BA6E928D3C57CB7 /* Frameworks */,
 			);
 			sourceTree = "<group>";
 		};
@@ -125,12 +140,14 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */;
 			buildPhases = (
+				43690862AB1C8D2C663E62A1 /* [CP] Check Pods Manifest.lock */,
 				9740EEB61CF901F6004384FC /* Run Script */,
 				97C146EA1CF9000F007C117D /* Sources */,
 				97C146EB1CF9000F007C117D /* Frameworks */,
 				97C146EC1CF9000F007C117D /* Resources */,
 				9705A1C41CF9048500538489 /* Embed Frameworks */,
 				3B06AD1E1E4923F5004D2608 /* Thin Binary */,
+				DA3E0E6397CD983DB6281FAB /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -202,7 +219,29 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" thin";
+			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" embed_and_thin";
+		};
+		43690862AB1C8D2C663E62A1 /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputFileListPaths = (
+			);
+			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
 		};
 		9740EEB61CF901F6004384FC /* Run Script */ = {
 			isa = PBXShellScriptBuildPhase;
@@ -218,6 +257,26 @@
 			shellPath = /bin/sh;
 			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
 		};
+		DA3E0E6397CD983DB6281FAB /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
+				"${PODS_ROOT}/../Flutter/Flutter.framework",
+				"${BUILT_PRODUCTS_DIR}/path_provider/path_provider.framework",
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Flutter.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider.framework",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 /* End PBXShellScriptBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */

example/ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -4,4 +4,7 @@
    <FileRef
       location = "group:Runner.xcodeproj">
    </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
 </Workspace>

example/lib/examples/alert_dialog.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
+import 'package:lottie/lottie.dart';
+
+void main() => runApp(App());
+
+class App extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: Scaffold(body: _Page()),
+    );
+  }
+}
+
+class _Page extends StatefulWidget {
+  @override
+  __PageState createState() => __PageState();
+}
+
+class __PageState extends State<_Page> {
+  @override
+  void initState() {
+    super.initState();
+
+    SchedulerBinding.instance.addPostFrameCallback((_) => _showLoader());
+  }
+
+  void _showLoader() {
+    showDialog<void>(
+      context: context,
+      builder: (context) => Center(
+        child: Lottie.network(
+          'https://assets10.lottiefiles.com/datafiles/QeC7XD39x4C1CIj/data.json',
+          fit: BoxFit.contain,
+          width: 200,
+          height: 200,
+        ),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Center();
+  }
+}

example/lib/examples/animation_full_control.dart

@@ -0,0 +1,109 @@
+import 'package:flutter/material.dart';
+import 'package:lottie/lottie.dart';
+
+/// This example show how to play the Lottie animation in various way:
+/// - Start and stop the animation on event callback
+/// - Play the animation forward and backward
+/// - Loop between two specific frames
+///
+/// This works by creating an AnimationController instance and passing it
+/// to the Lottie widget.
+/// The AnimationController class has a rich API to run the animation in various ways.
+void main() => runApp(MyApp());
+
+class MyApp extends StatefulWidget {
+  @override
+  _MyAppState createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
+  AnimationController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+
+    _controller = AnimationController(vsync: this)
+      ..value = 0.5
+      ..addListener(() {
+        setState(() {
+          // Rebuild the widget at each frame to update the "progress" label.
+        });
+      });
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: Scaffold(
+        appBar: AppBar(
+          title: Text('Animation control'),
+        ),
+        body: Column(
+          children: <Widget>[
+            const SizedBox(height: 20),
+            Lottie.asset(
+              'assets/LottieLogo1.json',
+              controller: _controller,
+              height: 300,
+              onLoaded: (composition) {
+                setState(() {
+                  _controller.duration = composition.duration;
+                });
+              },
+            ),
+            Text('${_controller.value.toStringAsFixed(2)}'),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                // Play backward
+                IconButton(
+                  icon: Icon(Icons.arrow_left),
+                  onPressed: () {
+                    _controller.reverse();
+                  },
+                ),
+                // Pause
+                IconButton(
+                  icon: Icon(Icons.pause),
+                  onPressed: () {
+                    _controller.stop();
+                  },
+                ),
+                // Play forward
+                IconButton(
+                  icon: Icon(Icons.arrow_right),
+                  onPressed: () {
+                    _controller.forward();
+                  },
+                ),
+              ],
+            ),
+            const SizedBox(height: 30),
+            RaisedButton(
+              child: Text('Loop between frames'),
+              onPressed: () {
+                // Loop between 2 specifics frames
+
+                var start = 0.1;
+                var stop = 0.5;
+                _controller.repeat(
+                  min: start,
+                  max: stop,
+                  reverse: true,
+                  period: _controller.duration * (stop - start),
+                );
+              },
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

example/lib/examples/save_frames.dart

@@ -0,0 +1,100 @@
+import 'dart:io';
+import 'dart:ui';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:lottie/lottie.dart';
+import 'package:path/path.dart' as p;
+import 'package:path_provider/path_provider.dart';
+
+/// This example shows how to save the frame of an animation to files on disk.
+void main() => runApp(MyApp());
+
+class MyApp extends StatefulWidget {
+  @override
+  _MyAppState createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  List<File> _frames;
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: Scaffold(
+        backgroundColor: Colors.grey,
+        body: SafeArea(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              RaisedButton(
+                child: Text('Export all frames'),
+                onPressed: _export,
+              ),
+              if (_frames != null)
+                Expanded(
+                  child: GridView.count(
+                    crossAxisCount: 10,
+                    children: [..._frames.map((f) => Image.file(f))],
+                  ),
+                )
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Future<void> _export() async {
+    var composition =
+        await AssetLottie('assets/lottiefiles/airbnb.json').load();
+
+    var frames = await exportFrames(
+        composition, await _createTempDirectory('export-lottie'),
+        progresses: [for (var i = 0.0; i <= 1; i += 0.1) i],
+        size: Size(50, 50));
+
+    setState(() {
+      _frames = frames;
+    });
+  }
+}
+
+Future<List<File>> exportFrames(LottieComposition composition, String directory,
+    {@required Size size, @required List<double> progresses}) async {
+  var drawable = LottieDrawable(composition);
+
+  var frames = <File>[];
+  for (var progress in progresses) {
+    drawable.setProgress(progress);
+
+    var bytes = await _toByteData(drawable, size);
+    var fileName = (progress * 100).round().toString().padLeft(3, '0');
+
+    var file = File(p.join(directory, '$fileName.png'));
+    await file.writeAsBytes(bytes.buffer.asUint8List());
+
+    frames.add(file);
+  }
+
+  return frames;
+}
+
+Future<ByteData> _toByteData(LottieDrawable drawable, Size size) async {
+  var pictureRecorder = PictureRecorder();
+  var canvas = Canvas(pictureRecorder);
+
+  drawable.draw(canvas, Offset.zero & size);
+
+  var picture = pictureRecorder.endRecording();
+  var image = await picture.toImage(size.width.toInt(), size.height.toInt());
+  return await image.toByteData(format: ImageByteFormat.png);
+}
+
+Future<String> _createTempDirectory(String folderName) async {
+  final tempDirectory = await getTemporaryDirectory();
+  var dir = Directory(p.join(tempDirectory.path, folderName));
+  if (!dir.existsSync()) {
+    await dir.create(recursive: true);
+  }
+  return dir.path;
+}

example/macos/Flutter/Flutter-Debug.xcconfig

@@ -1 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
 #include "ephemeral/Flutter-Generated.xcconfig"

example/macos/Flutter/Flutter-Release.xcconfig

@@ -1 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
 #include "ephemeral/Flutter-Generated.xcconfig"

example/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,6 +5,8 @@
 import FlutterMacOS
 import Foundation
 
+import path_provider_macos
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
 }

example/macos/Podfile

@@ -0,0 +1,82 @@
+platform :osx, '10.11'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def parse_KV_file(file, separator='=')
+  file_abs_path = File.expand_path(file)
+  if !File.exists? file_abs_path
+    return [];
+  end
+  pods_ary = []
+  skip_line_start_symbols = ["#", "/"]
+  File.foreach(file_abs_path) { |line|
+      next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
+      plugin = line.split(pattern=separator)
+      if plugin.length == 2
+        podname = plugin[0].strip()
+        path = plugin[1].strip()
+        podpath = File.expand_path("#{path}", file_abs_path)
+        pods_ary.push({:name => podname, :path => podpath});
+      else
+        puts "Invalid plugin specification: #{line}"
+      end
+  }
+  return pods_ary
+end
+
+def pubspec_supports_macos(file)
+  file_abs_path = File.expand_path(file)
+  if !File.exists? file_abs_path
+    return false;
+  end
+  File.foreach(file_abs_path) { |line|
+    return true if line =~ /^\s*macos:/
+  }
+  return false
+end
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
+  # referring to absolute paths on developers' machines.
+  ephemeral_dir = File.join('Flutter', 'ephemeral')
+  symlink_dir = File.join(ephemeral_dir, '.symlinks')
+  symlink_plugins_dir = File.join(symlink_dir, 'plugins')
+  system("rm -rf #{symlink_dir}")
+  system("mkdir -p #{symlink_plugins_dir}")
+
+  # Flutter Pods
+  generated_xcconfig = parse_KV_file(File.join(ephemeral_dir, 'Flutter-Generated.xcconfig'))
+  if generated_xcconfig.empty?
+    puts "Flutter-Generated.xcconfig must exist. If you're running pod install manually, make sure flutter packages get is executed first."
+  end
+  generated_xcconfig.map { |p|
+    if p[:name] == 'FLUTTER_FRAMEWORK_DIR'
+      symlink = File.join(symlink_dir, 'flutter')
+      File.symlink(File.dirname(p[:path]), symlink)
+      pod 'FlutterMacOS', :path => File.join(symlink, File.basename(p[:path]))
+    end
+  }
+
+  # Plugin Pods
+  plugin_pods = parse_KV_file('../.flutter-plugins')
+  plugin_pods.map { |p|
+    symlink = File.join(symlink_plugins_dir, p[:name])
+    File.symlink(p[:path], symlink)
+    if pubspec_supports_macos(File.join(symlink, 'pubspec.yaml'))
+      pod p[:name], :path => File.join(symlink, 'macos')
+    end
+  }
+end
+
+# Prevent Cocoapods from embedding a second Flutter framework and causing an error with the new Xcode build system.
+install! 'cocoapods', :disable_input_output_paths => true

example/macos/Podfile.lock

@@ -0,0 +1,27 @@
+PODS:
+  - FlutterMacOS (1.0.0)
+  - path_provider (0.0.1)
+  - path_provider_macos (0.0.1):
+    - FlutterMacOS
+
+DEPENDENCIES:
+  - FlutterMacOS (from `Flutter/ephemeral/.symlinks/flutter/darwin-x64`)
+  - path_provider (from `Flutter/ephemeral/.symlinks/plugins/path_provider/macos`)
+  - path_provider_macos (from `Flutter/ephemeral/.symlinks/plugins/path_provider_macos/macos`)
+
+EXTERNAL SOURCES:
+  FlutterMacOS:
+    :path: Flutter/ephemeral/.symlinks/flutter/darwin-x64
+  path_provider:
+    :path: Flutter/ephemeral/.symlinks/plugins/path_provider/macos
+  path_provider_macos:
+    :path: Flutter/ephemeral/.symlinks/plugins/path_provider_macos/macos
+
+SPEC CHECKSUMS:
+  FlutterMacOS: 15bea8a44d2fa024068daa0140371c020b4b6ff9
+  path_provider: e0848572d1d38b9a7dd099e79cf83f5b7e2cde9f
+  path_provider_macos: a0a3fd666cb7cd0448e936fb4abad4052961002b
+
+PODFILE CHECKSUM: d8ba9b3e9e93c62c74a660b46c6fcb09f03991a7
+
+COCOAPODS: 1.9.1

example/macos/Runner.xcodeproj/project.pbxproj

@@ -30,6 +30,7 @@
 		33D1A10522148B93006C7A3E /* FlutterMacOS.framework in Bundle Framework */ = {isa = PBXBuildFile; fileRef = 33D1A10322148B71006C7A3E /* FlutterMacOS.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		D73912F022F37F9E000D13A0 /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D73912EF22F37F9E000D13A0 /* App.framework */; };
 		D73912F222F3801D000D13A0 /* App.framework in Bundle Framework */ = {isa = PBXBuildFile; fileRef = D73912EF22F37F9E000D13A0 /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		F03CC91740A974D36C2A6384 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0BC6FF5FCD90624533CC60DB /* Pods_Runner.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -58,9 +59,12 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		07433C750748E9780BC34A17 /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
+		0BC6FF5FCD90624533CC60DB /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		10F2CF3D6900CD627E92FAFB /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
 		333000ED22D3DE5D00554162 /* Warnings.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Warnings.xcconfig; sourceTree = "<group>"; };
 		335BBD1A22A9A15E00E9071D /* GeneratedPluginRegistrant.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = GeneratedPluginRegistrant.swift; sourceTree = "<group>"; };
-		33CC10ED2044A3C60003C045 /* example.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "example.app"; sourceTree = BUILT_PRODUCTS_DIR; };
+		33CC10ED2044A3C60003C045 /* example.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = example.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		33CC10F02044A3C60003C045 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		33CC10F22044A3C60003C045 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; name = Assets.xcassets; path = Runner/Assets.xcassets; sourceTree = "<group>"; };
 		33CC10F52044A3C60003C045 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = Base.lproj/MainMenu.xib; sourceTree = "<group>"; };
@@ -73,6 +77,7 @@
 		33E51913231747F40026EE4D /* DebugProfile.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = DebugProfile.entitlements; sourceTree = "<group>"; };
 		33E51914231749380026EE4D /* Release.entitlements */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.entitlements; path = Release.entitlements; sourceTree = "<group>"; };
 		33E5194F232828860026EE4D /* AppInfo.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppInfo.xcconfig; sourceTree = "<group>"; };
+		5B4C0E87024EC2686CA05E23 /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Release.xcconfig; sourceTree = "<group>"; };
 		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; path = Debug.xcconfig; sourceTree = "<group>"; };
 		D73912EF22F37F9E000D13A0 /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/ephemeral/App.framework; sourceTree = SOURCE_ROOT; };
@@ -85,6 +90,7 @@
 			files = (
 				D73912F022F37F9E000D13A0 /* App.framework in Frameworks */,
 				33D1A10422148B71006C7A3E /* FlutterMacOS.framework in Frameworks */,
+				F03CC91740A974D36C2A6384 /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -109,6 +115,7 @@
 				33CEB47122A05771004F2AC0 /* Flutter */,
 				33CC10EE2044A3C60003C045 /* Products */,
 				D73912EC22F37F3D000D13A0 /* Frameworks */,
+				E1769B635E3D601E790C66A4 /* Pods */,
 			);
 			sourceTree = "<group>";
 		};
@@ -160,10 +167,22 @@
 		D73912EC22F37F3D000D13A0 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				0BC6FF5FCD90624533CC60DB /* Pods_Runner.framework */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
 		};
+		E1769B635E3D601E790C66A4 /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				10F2CF3D6900CD627E92FAFB /* Pods-Runner.debug.xcconfig */,
+				07433C750748E9780BC34A17 /* Pods-Runner.release.xcconfig */,
+				5B4C0E87024EC2686CA05E23 /* Pods-Runner.profile.xcconfig */,
+			);
+			name = Pods;
+			path = Pods;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -171,11 +190,13 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 33CC10FB2044A3C60003C045 /* Build configuration list for PBXNativeTarget "Runner" */;
 			buildPhases = (
+				66E2D04933C70A4FC0890B06 /* [CP] Check Pods Manifest.lock */,
 				33CC10E92044A3C60003C045 /* Sources */,
 				33CC10EA2044A3C60003C045 /* Frameworks */,
 				33CC10EB2044A3C60003C045 /* Resources */,
 				33CC110E2044A8840003C045 /* Bundle Framework */,
 				3399D490228B24CF009A79C7 /* ShellScript */,
+				F22406C58ADF93CA802196B1 /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -282,6 +303,43 @@
 			shellPath = /bin/sh;
 			shellScript = "\"$FLUTTER_ROOT\"/packages/flutter_tools/bin/macos_assemble.sh\ntouch Flutter/ephemeral/tripwire\n";
 		};
+		66E2D04933C70A4FC0890B06 /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputFileListPaths = (
+			);
+			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
+		};
+		F22406C58ADF93CA802196B1 /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputFileListPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 /* End PBXShellScriptBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */

example/macos/Runner.xcworkspace/contents.xcworkspacedata

@@ -4,4 +4,7 @@
    <FileRef
       location = "group:Runner.xcodeproj">
    </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
 </Workspace>

example/macos/Runner/DebugProfile.entitlements

@@ -4,8 +4,14 @@
 <dict>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
+	<key>com.apple.security.assets.pictures.read-write</key>
+	<true/>
 	<key>com.apple.security.cs.allow-jit</key>
 	<true/>
+	<key>com.apple.security.files.downloads.read-write</key>
+	<true/>
+	<key>com.apple.security.files.user-selected.read-write</key>
+	<true/>
 	<key>com.apple.security.network.client</key>
 	<true/>
 	<key>com.apple.security.network.server</key>

example/macos/Runner/Release.entitlements

@@ -4,6 +4,12 @@
 <dict>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
+	<key>com.apple.security.assets.pictures.read-write</key>
+	<true/>
+	<key>com.apple.security.files.downloads.read-write</key>
+	<true/>
+	<key>com.apple.security.files.user-selected.read-write</key>
+	<true/>
 	<key>com.apple.security.network.client</key>
 	<true/>
 	<key>com.apple.security.network.server</key>

example/pubspec.lock

@@ -43,6 +43,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.3"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
   collection:
     dependency: transitive
     description:
@@ -64,6 +71,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.4"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -75,7 +89,7 @@ packages:
       name: flutter_colorpicker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.2"
+    version: "0.3.4"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -87,14 +101,21 @@ packages:
       name: golden_toolkit
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.1"
-  image:
-    dependency: transitive
+    version: "0.3.2"
+  http:
+    dependency: "direct main"
     description:
-      name: image
+      name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.12"
+    version: "0.12.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.4"
   logging:
     dependency: transitive
     description:
@@ -108,7 +129,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.3.3"
+    version: "0.3.4"
   matcher:
     dependency: transitive
     description:
@@ -129,28 +150,49 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.4"
+    version: "1.7.0"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.6.8"
+  path_provider_macos:
+    dependency: transitive
+    description:
+      name: path_provider_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.4+2"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   pedantic:
-    dependency: "direct overridden"
+    dependency: transitive
     description:
       name: pedantic
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.9.0"
-  petitparser:
+  platform:
     dependency: transitive
     description:
-      name: petitparser
+      name: platform
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
-  quiver:
+    version: "2.2.1"
+  plugin_platform_interface:
     dependency: transitive
     description:
-      name: quiver
+      name: plugin_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "1.0.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -212,13 +254,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.6.1"
 sdks:
   dart: ">=2.7.0 <3.0.0"
-  flutter: ">=1.5.4 <2.0.0"
+  flutter: ">=1.12.13+hotfix.5 <2.0.0"

example/pubspec.yaml

@@ -11,15 +11,14 @@ dependencies:
   lottie:
     path: ../
   flutter_colorpicker:
+  path_provider:
+  http:
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
   golden_toolkit:
 
-dependency_overrides:
-  pedantic: ^1.9.0
-
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
 
@@ -35,6 +34,7 @@ flutter:
     - assets/Logo/
     - assets/Images/
     - assets/Images/WeAccept/
+    - assets/Weather/
 
   fonts:
     - family: Comic Neue

example/test/golden_test.dart

@@ -0,0 +1,32 @@
+import 'dart:io';
+import 'dart:ui';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:lottie/lottie.dart';
+import 'package:path/path.dart' as p;
+import 'utils.dart';
+
+void main() {
+  var root = 'assets';
+  for (var asset in Directory(root)
+      .listSync(recursive: true)
+      .whereType<File>()
+      .where((f) => const ['.json', '.zip'].contains(p.extension(f.path)))) {
+    testWidgets('Goldens ${asset.path}', (tester) async {
+      var size = Size(500, 400);
+      tester.binding.window.physicalSizeTestValue = size;
+      tester.binding.window.devicePixelRatioTestValue = 1.0;
+      var composition = await tester.runAsync(() => FileLottie(asset).load());
+
+      await tester.pumpWidget(FilmStrip(composition, size: size));
+
+      var folder = p.relative(asset.path, from: root);
+      var fileName =
+          '${p.basenameWithoutExtension(asset.path)}.png'.toLowerCase();
+      await expectLater(
+          find.byType(FilmStrip),
+          matchesGoldenFile(
+              p.join('goldens/all', p.dirname(folder), fileName)));
+    });
+  }
+}