feat: add file picker

example/lib/media_picker.dart

@@ -97,6 +97,21 @@ class _MediaPickerState extends ConsumerState<MediaPickerPage> {
                       Navigator.pop(context);
                     },
                   ),
+                  MediaPickerInputFile(
+                    pickFile: mediaService.pickFile,
+                    fileExtensions: [
+                      'pdf',
+                      'doc',
+                      'png',
+                      'jpg',
+                      'docx',
+                      'bmp',
+                      'gif',
+                    ],
+                    checkPageSettings: {
+                      'title': 'Bestand delen',
+                    },
+                  ),
                 ],
                 mediaCheckPage: (Widget displayResult,
                         Map<String, dynamic>? inputSettings,

lib/src/abstracts/media_picker_service.dart

@@ -4,6 +4,8 @@
 
 import 'dart:typed_data';
 
+import 'package:file_picker/file_picker.dart';
+
 abstract class MediaPickerService {
   /// Returns [Uint8List] based on given [ImageSource].
   Future<Uint8List?> pickImageFile();
@@ -12,5 +14,5 @@ abstract class MediaPickerService {
   Future<Uint8List?> pickVideoFile();
 
   /// Returns [Uint8List] based on given [File].
-  Future<Uint8List?> pickFile();
+  Future<FilePickerResult?> pickFile(List<String> fileExtensions);
 }

lib/src/inputs/input_file.dart

@@ -0,0 +1,78 @@
+// SPDX-FileCopyrightText: 2022 Iconica
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+import 'package:file_picker/file_picker.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_media_picker/src/abstracts/media_picker_input.dart';
+
+import 'package:path/path.dart' as path;
+
+import 'package:flutter_media_picker/src/media_result.dart';
+
+/// Input for photo used by [MediaPicker].
+class MediaPickerInputFile implements MediaPickerInput {
+  MediaPickerInputFile({
+    this.label = "File",
+    this.fileExtensions = const ['pdf', 'jpg', 'png'],
+    this.checkPageSettings,
+    this.onComplete,
+    this.pickFile,
+  });
+
+  final Future<FilePickerResult?> Function(List<String>)? pickFile;
+  final List<String> fileExtensions;
+
+  @override
+  String label;
+
+  @override
+  Future<MediaResult> onPressed(BuildContext context) async {
+    var file = await pickFile?.call(fileExtensions);
+
+    if (file != null && file.files.first.bytes != null) {
+      return MediaResult(
+        fileValue: file.files.first.bytes,
+        fileType: path.extension(file.files.first.name),
+        fileName: file.files.first.name,
+      );
+    }
+    return MediaResult();
+  }
+
+  @override
+  Future<Widget> displayResult(MediaResult result) async {
+    if (result.fileValue != null) {
+      switch (result.fileType) {
+        case '.png':
+        case '.jpg':
+        case '.jpeg':
+        case '.svg':
+        case '.webp':
+        case '.bmp':
+        case '.gif':
+          return Image.memory(
+            result.fileValue!,
+            height: 250,
+          );
+        case '.pdf':
+        case '.doc':
+        case '.docx':
+          return Text(result.fileName!);
+        default:
+      }
+      // return Image.memory(
+      //   result.fileValue!,
+      //   height: 250,
+      // );
+    }
+
+    return Container();
+  }
+
+  @override
+  Map<String, dynamic>? checkPageSettings;
+
+  @override
+  void Function(MediaResult value)? onComplete;
+}

lib/src/inputs/input_photo.dart

@@ -26,13 +26,7 @@ class MediaPickerInputPhoto implements MediaPickerInput {
 
   @override
   Future<MediaResult> onPressed(BuildContext context) async {
-    var image = await showModalBottomSheet<Uint8List?>(
-        context: context,
-        backgroundColor: Colors.white,
-        builder: (BuildContext context) => const ImagePicker(
-              imagePickerConfig: ImagePickerConfig(
-                  maxHeight: 300, maxWidth: 200, imageQuality: 40),
-            ));
+    var image = await pickFile?.call();
 
     if (image != null && image.isNotEmpty) {
       return MediaResult(

lib/src/inputs/inputs.dart

@@ -6,3 +6,4 @@ export 'input_audio.dart';
 export 'input_photo.dart';
 export 'input_text.dart';
 export 'input_video.dart';
+export 'input_file.dart';

lib/src/media_picker.dart

@@ -187,6 +187,7 @@ class MediaPicker extends ConsumerWidget {
           MediaResult result = MediaResult(
             fileValue: content.fileValue,
             textValue: content.textValue,
+            fileType: content.fileType,
             checkPageResults: results,
           );
 

lib/src/media_result.dart

@@ -10,6 +10,8 @@ class MediaResult {
     this.textValue,
     this.fileValue,
     this.checkPageResults,
+    this.fileType,
+    this.fileName,
   });
 
   /// For textfield returns actual text,
@@ -21,4 +23,10 @@ class MediaResult {
 
   /// Returns the values from the checkPageResults if checkpage is set.
   final Map<String, dynamic>? checkPageResults;
+
+  /// Returns the filetype when a file is selected with the FilePicker.
+  final String? fileType;
+
+  /// Returns the file name when a file is selected with the FilePicker.
+  final String? fileName;
 }

lib/src/service/media_picker_service.dart

@@ -4,6 +4,7 @@
 
 import 'dart:typed_data';
 
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_media_picker/src/abstracts/media_picker_service.dart';
 import 'package:image_picker/image_picker.dart';
@@ -17,7 +18,6 @@ class MediaPickerFileService implements MediaPickerService {
 
   @override
   Future<Uint8List?> pickImageFile() async {
-    
     var image = await ImagePicker().pickImage(source: ImageSource.camera);
 
     if (image != null) {
@@ -50,7 +50,17 @@ class MediaPickerFileService implements MediaPickerService {
   }
 
   @override
-  Future<Uint8List?> pickFile() async {
-    return null;
+  Future<FilePickerResult?> pickFile(List<String> extensions) async {
+    var file = await FilePicker.platform.pickFiles(
+      withData: true,
+      type: FileType.custom,
+      allowedExtensions: extensions,
+    );
+
+    if (file != null) {
+      return file;
+    }
+
+    return Future.value(null);
   }
 }