add EdgeDetectionExample

lib/my_app_routes.dart

@@ -71,6 +71,7 @@ import 'routes/persistence_hive_ex.dart';
 import 'routes/persistence_preference_ex.dart';
 import 'routes/persistence_sembast_ex.dart';
 import 'routes/persistence_sqlite_ex.dart';
+import 'routes/multimedia_edge_detection_ex.dart';
 import 'routes/plugins_feature_discovery_ex.dart';
 import 'routes/plugins_image_ex.dart';
 import 'routes/plugins_local_auth_ex.dart';
@@ -678,6 +679,13 @@ const kMyAppRoutesAdvanced = <MyRouteGroup>[
         description: 'Video/audio player plugin by the flutter team.',
         links: {'Pub': 'https://pub.dev/packages/video_player'},
       ),
+      MyRoute(
+        child: EdgeDetectionExample(),
+        sourceFilePath: 'lib/routes/multimedia_edge_detection_ex.dart',
+        title: 'Edge Detection',
+        description: 'Plugin to scan documents.',
+        links: {'Pub': 'https://pub.dev/packages/edge_detection'},
+      ),
     ],
   ),
   MyRouteGroup(

lib/routes/multimedia_edge_detection_ex.dart

@@ -0,0 +1,43 @@
+import 'dart:io';
+
+import 'package:edge_detection/edge_detection.dart';
+import 'package:flutter/material.dart';
+
+class EdgeDetectionExample extends StatefulWidget {
+  const EdgeDetectionExample({Key key}) : super(key: key);
+
+  @override
+  _EdgeDetectionExampleState createState() => _EdgeDetectionExampleState();
+}
+
+class _EdgeDetectionExampleState extends State<EdgeDetectionExample> {
+  String _scannedImgPath;
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        const SizedBox(height: 8),
+        ElevatedButton.icon(
+          icon: const Icon(Icons.camera),
+          label: const Text('start'),
+          onPressed: _doScan,
+        ),
+        if (_scannedImgPath != null) ...[
+          Text(_scannedImgPath),
+          Expanded(
+            child: Image.file(File(_scannedImgPath)),
+          )
+        ]
+      ],
+    );
+  }
+
+  Future<void> _doScan() async {
+    /// This [detectEdge] is the only method exposed by the plugin, it'll open
+    /// the camera and do the scanning.
+    /// !Unfortunately we cannot customize the behavior like loading image from
+    /// !gallery or changing the saved image path.
+    final imgPath = await EdgeDetection.detectEdge;
+    setState(() => _scannedImgPath = imgPath);
+  }
+}

pubspec.yaml

@@ -24,6 +24,7 @@ dependencies:
   charts_flutter: 0.9.0
   cloud_firestore: 0.14.1+3
   convex_bottom_bar: ^2.6.0
+  edge_detection: ^1.0.5
   english_words: 3.1.5
   extended_image: ^1.3.1-dev
   feature_discovery: ^0.13.0+2