From 807673bf7405c5018c81208ad518ed4001449206 Mon Sep 17 00:00:00 2001
From: Guillaume Roux <rouxguillaume8@gmail.com>
Date: Tue, 22 Mar 2022 22:47:36 +0100
Subject: [PATCH] finalized example

---
 .../big_video_upload_view.dart                | 65 +++++++------------
 example/lib/sample/sample_page.dart           | 24 ++++---
 example/pubspec.yaml                          |  2 +-
 3 files changed, 37 insertions(+), 54 deletions(-)

diff --git a/example/lib/big_video_upload/big_video_upload_view.dart b/example/lib/big_video_upload/big_video_upload_view.dart
index eae2197..207a841 100644
--- a/example/lib/big_video_upload/big_video_upload_view.dart
+++ b/example/lib/big_video_upload/big_video_upload_view.dart
@@ -6,20 +6,20 @@ import 'package:image_picker_web/image_picker_web.dart';
 import 'package:video_player/video_player.dart';
 
 class BigVideoUploadView extends StatefulWidget {
-  const BigVideoUploadView({Key key}) : super(key: key);
+  const BigVideoUploadView({Key? key}) : super(key: key);
 
   @override
   State<BigVideoUploadView> createState() => _BigVideoUploadViewState();
 }
 
 class _BigVideoUploadViewState extends State<BigVideoUploadView> {
-  VideoPlayerController _controller;
+  VideoPlayerController? _controller;
 
   Future<void> _createVideo(Uint8List bytes) async {
     final blob = html.Blob([bytes]);
     final url = html.Url.createObjectUrlFromBlob(blob);
     _controller = VideoPlayerController.network(url);
-    await _controller.initialize();
+    await _controller?.initialize();
     setState(() {});
   }
 
@@ -32,20 +32,11 @@ class _BigVideoUploadViewState extends State<BigVideoUploadView> {
   }
 
   Future<void> _pickAndLoadVideo() async {
-    final timer = Stopwatch()..start();
     final file = await ImagePickerWeb.getVideoAsFile();
-    final bytes = await _loadImage(file);
-    timer.stop();
-    print('Loaded in ${timer.elapsedMilliseconds}ms');
-    await _createVideo(bytes);
-  }
-
-  Future<void> _readAndLoadVideo() async {
-    final timer = Stopwatch()..start();
-    final bytes = await ImagePickerWeb.getVideoAsBytes();
-    timer.stop();
-    print('Loaded in ${timer.elapsedMilliseconds}ms');
-    await _createVideo(bytes);
+    if (file != null) {
+      final bytes = await _loadImage(file);
+      await _createVideo(bytes);
+    }
   }
 
   @override
@@ -56,43 +47,37 @@ class _BigVideoUploadViewState extends State<BigVideoUploadView> {
 
   @override
   Widget build(BuildContext context) {
+    final controller = _controller;
     return Scaffold(
       appBar: AppBar(title: const Text('Big Video Upload')),
-      floatingActionButton: FloatingActionButton(
-        onPressed: () {
-          if (_controller != null) {
-            setState(() {
-              _controller.value.isPlaying
-                  ? _controller.pause()
-                  : _controller.play();
-            });
-          }
-        },
-        child: Icon(
-          _controller != null && _controller.value.isPlaying
-              ? Icons.pause
-              : Icons.play_arrow,
-        ),
-      ),
+      floatingActionButton: controller != null
+          ? FloatingActionButton(
+              onPressed: () {
+                setState(() {
+                  controller.value.isPlaying
+                      ? controller.pause()
+                      : controller.play();
+                });
+              },
+              child: Icon(
+                controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
+              ),
+            )
+          : null,
       body: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           crossAxisAlignment: CrossAxisAlignment.center,
           children: [
-            if (_controller != null && _controller.value.isInitialized)
+            if (controller != null && controller.value.isInitialized)
               AspectRatio(
-                aspectRatio: _controller.value.aspectRatio,
-                child: VideoPlayer(_controller),
+                aspectRatio: controller.value.aspectRatio,
+                child: VideoPlayer(controller),
               ),
             ElevatedButton(
               onPressed: _pickAndLoadVideo,
               child: Text('Load Video with FileReader'),
             ),
-            const SizedBox(height: 16),
-            ElevatedButton(
-              onPressed: _readAndLoadVideo,
-              child: Text('Load Video with getVideoAsBytes'),
-            ),
           ],
         ),
       ),
diff --git a/example/lib/sample/sample_page.dart b/example/lib/sample/sample_page.dart
index a712aaf..d0b7b6d 100644
--- a/example/lib/sample/sample_page.dart
+++ b/example/lib/sample/sample_page.dart
@@ -43,19 +43,19 @@ class _SamplePageState extends State<SamplePage> {
   Future<void> _getImgFile() async {
     final infos = await ImagePickerWeb.getImageAsFile();
     setState(() => _imageInfo =
-        'Name: ${infos.name}\nRelative Path: ${infos.relativePath}');
+        'Name: ${infos?.name}\nRelative Path: ${infos?.relativePath}');
   }
 
   Future<void> _getImgInfo() async {
     final infos = await ImagePickerWeb.getImageInfo;
-    setState(() {
-      _pickedImages.clear();
-      _pickedImages.add(Image.memory(
-        infos.data,
-        semanticLabel: infos.fileName,
-      ));
-      _imageInfo = '${infos.toJson()}';
-    });
+    final data = infos.data;
+    if (data != null) {
+      setState(() {
+        _pickedImages.clear();
+        _pickedImages.add(Image.memory(data, semanticLabel: infos.fileName));
+        _imageInfo = '${infos.toJson()}';
+      });
+    }
   }
 
   @override
@@ -81,10 +81,8 @@ class _SamplePageState extends State<SamplePage> {
                       height: 200,
                       child: ListView.builder(
                           scrollDirection: Axis.horizontal,
-                          itemCount:
-                              _pickedImages == null ? 0 : _pickedImages.length,
-                          itemBuilder: (context, index) =>
-                              _pickedImages[index]),
+                          itemCount: _pickedImages.length,
+                          itemBuilder: (_, index) => _pickedImages[index]),
                     ),
                   ),
                   Container(
diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index d82f7cc..bf808b6 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -3,7 +3,7 @@ description: Demonstrates how to use the image_picker_web plugin.
 publish_to: "none"
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: ">=2.15.0 <3.0.0"
 
 dependencies:
   cupertino_icons: ^0.1.2