add new method captureAndSave

example/lib/main.dart

-
 import 'dart:typed_data';
 
 import 'package:flutter/material.dart';
@@ -58,8 +57,7 @@ class _MyHomePageState extends State<MyHomePage> {
 
   @override
   void initState() {
-    
-    // if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView(); 
+    // if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();
     super.initState();
   }
 
@@ -92,8 +90,7 @@ class _MyHomePageState extends State<MyHomePage> {
         child: new Center(
           child: Screenshot(
             controller: screenshotController,
-            child:Text("HEllo"),
-         
+            child: Text("HEllo"),
           ),
         ),
       ),
@@ -104,28 +101,21 @@ class _MyHomePageState extends State<MyHomePage> {
           screenshotController
               .capture(delay: Duration(milliseconds: 10))
               .then((Uint8List image) async {
-            //print("Capture Done");
-            // setState(() {
-              _imageFile = image;
-              showDialog(context: context,
+            _imageFile = image;
+            showDialog(
+              context: context,
               builder: (context) => Scaffold(
                 appBar: AppBar(
                   title: Text("CAPURED SCREENSHOT"),
                 ),
                 body: Center(
-                  child:Column(
-                    children: [
-
-                  _imageFile != null ? Image.memory(_imageFile) : Container(),
-                    ],
-                  ) 
-                ),
-              ) ,
-              );
-            // });
-            // final result =
-            //     await ImageGallerySaver.save(image.readAsBytesSync());
-            print("File Saved to Gallery");
+                    child: Column(
+                  children: [
+                    _imageFile != null ? Image.memory(_imageFile) : Container(),
+                  ],
+                )),
+              ),
+            );
           }).catchError((onError) {
             print(onError);
           });

lib/screenshot.dart

@@ -3,7 +3,7 @@ library screenshot;
 // import 'dart:io';
 import 'dart:async';
 import 'dart:typed_data';
-
+import 'src/platform_specific/file_manager/file_manager.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
@@ -21,8 +21,24 @@ class ScreenshotController {
     _containerKey = GlobalKey();
   }
 
+/// Captures image and saves to given path
+  Future<String> captureAndSave(
+    String directory, {
+    String fileName,
+    double pixelRatio,
+    Duration delay: const Duration(milliseconds: 20),
+  }) async {
+    Uint8List content = await capture(
+      pixelRatio: pixelRatio,
+      delay: delay,
+    );
+
+    PlatformFileManager fileManager = PlatformFileManager();
+
+    return fileManager.saveFile(content, directory, name: fileName);
+  }
+
   Future<Uint8List> capture({
-    String path = "",
     double pixelRatio,
     Duration delay: const Duration(milliseconds: 20),
   }) {
@@ -73,7 +89,7 @@ class Screenshot<T> extends StatefulWidget {
     this.child,
     this.controller,
   }) : super(key: key);
-      
+
   @override
   State<Screenshot> createState() {
     return new ScreenshotState();
@@ -116,4 +132,3 @@ class ScreenshotState extends State<Screenshot> with TickerProviderStateMixin {
     );
   }
 }
-

lib/src/platform_specific/file_manager/file_manager.dart

+import 'dart:typed_data';
+
+// import 'file_manager_mobile.dart';
+import 'file_manager_stub.dart'
+    if (dart.library.io) "file_manager_io.dart"
+    if (dart.library.html) "non_io.dart";
+
+abstract class PlatformFileManager {
+  factory PlatformFileManager() => getFileManager();
+  Future<String> saveFile(Uint8List fileContent, String path, {String name});
+}

lib/src/platform_specific/file_manager/file_manager_io.dart

+import 'dart:io';
+import 'dart:typed_data';
+
+import 'file_manager.dart';
+
+PlatformFileManager getFileManager() => PlatformFilePickerWindows();
+
+class PlatformFilePickerWindows implements PlatformFileManager {
+  @override
+  Future<String> saveFile(Uint8List fileContent, String path,
+      {String name}) async {
+    name = name ?? "${DateTime.now().microsecondsSinceEpoch}.png";
+    File file = await File("$path/$name").create(recursive: true);
+    file.writeAsBytesSync(fileContent);
+    return file.path;
+  }
+}

lib/src/platform_specific/file_manager/file_manager_mobile.dart

+// import 'dart:io';
+// import 'dart:typed_data';
+
+// import 'file_manager.dart';
+
+// PlatformFileManager getFilePicker() => PlatformFilePickerMobile();
+
+// class PlatformFilePickerMobile with PlatformFileManager {
+//   @override
+//   Future<String> saveFile(Uint8List fileContent, String path, {String name}) async{
+//    name = name??"${DateTime.now().toIso8601String()}.png";
+//    File file = File("$path/$name");
+//     file.writeAsBytesSync(fileContent);
+//     return file.path;
+//   }
+ 
+ 
+// }

lib/src/platform_specific/file_manager/file_manager_stub.dart

+import 'file_manager.dart';
+
+PlatformFileManager getFileManager() =>
+    throw UnimplementedError("File Picker is Not Implementd in current platform");

lib/src/platform_specific/file_manager/non_io.dart

+// import 'dart:html';
+import 'dart:typed_data';
+
+import 'file_manager.dart';
+
+PlatformFileManager getFileManager() => PlatformFileManagerWeb();
+
+class PlatformFileManagerWeb implements PlatformFileManager {
+  @override
+  Future<String> saveFile(Uint8List fileContent, String path,
+      {String name}) async {
+  throw UnsupportedError("File cannot be saved in current platform");
+    // name = name ?? "${DateTime.now().microsecondsSinceEpoch}.png";
+    // File file = await File("$path/$name").create(recursive: true);
+    // file.writeAsBytesSync(fileContent);
+    // return file.path;
+  }
+}

pubspec.lock

@@ -81,13 +81,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0-nullsafety.3"
-  path_provider:
-    dependency: "direct main"
-    description:
-      name: path_provider
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.1.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -151,4 +144,3 @@ packages:
     version: "2.1.0-nullsafety.5"
 sdks:
   dart: ">=2.12.0-0.0 <3.0.0"
-  flutter: ">=0.1.4"

pubspec.yaml

@@ -6,12 +6,11 @@ homepage: https://github.com/SachinGanesh/screenshot
 environment:
   sdk: '>=2.8.0 <3.0.0'
   # sdk: '>=2.12.0-259.8.beta <3.0.0'
-  
+
 # analyzer:
 #   enable-experiment:
 #     - non-nullable
 dependencies:
-  path_provider: ^1.1.0
   flutter:
     sdk: flutter
 
@@ -21,37 +20,35 @@ dev_dependencies:
 
 # For information on the generic Dart part of this file, see the
 # following page: https://www.dartlang.org/tools/pub/pubspec
-
 # The following section is specific to Flutter.
-flutter:
-
-  # To add assets to your package, add an assets section, like this:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
-  #
-  # For details regarding assets in packages, see
-  # https://flutter.io/assets-and-images/#from-packages
-  #
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.io/assets-and-images/#resolution-aware.
+flutter: null
 
-  # To add custom fonts to your package, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts in packages, see
-  # https://flutter.io/custom-fonts/#from-packages
+# To add assets to your package, add an assets section, like this:
+# assets:
+#  - images/a_dot_burr.jpeg
+#  - images/a_dot_ham.jpeg
+#
+# For details regarding assets in packages, see
+# https://flutter.io/assets-and-images/#from-packages
+#
+# An image asset can refer to one or more resolution-specific "variants", see
+# https://flutter.io/assets-and-images/#resolution-aware.
+# To add custom fonts to your package, add a fonts section here,
+# in this "flutter" section. Each entry in this list should have a
+# "family" key with the font family name, and a "fonts" key with a
+# list giving the asset and other descriptors for the font. For
+# example:
+# fonts:
+#   - family: Schyler
+#     fonts:
+#       - asset: fonts/Schyler-Regular.ttf
+#       - asset: fonts/Schyler-Italic.ttf
+#         style: italic
+#   - family: Trajan Pro
+#     fonts:
+#       - asset: fonts/TrajanPro.ttf
+#       - asset: fonts/TrajanPro_Bold.ttf
+#         weight: 700
+#
+# For details regarding fonts in packages, see
+# https://flutter.io/custom-fonts/#from-packages