flutter_file_dialog 2.3.2

Dialogs for picking and saving files in Android and in iOS.

example/lib/main.dart

// Copyright (c) 2020 KineApps. All rights reserved.
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.

import 'dart:io';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:flutter_file_dialog/flutter_file_dialog.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool _isBusy = false;
  OpenFileDialogType _dialogType = OpenFileDialogType.image;
  SourceType _sourceType = SourceType.photoLibrary;
  bool _allowEditing = false;
  File _currentFile;
  String _savedFilePath;
  bool _localOnly = false;
  bool _copyFileToCacheDir = true;
  String _pickedFilePath;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('FlutterFileDialog test app'),
        ),
        body: SingleChildScrollView(
          padding: const EdgeInsets.symmetric(horizontal: 8),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.only(top: 24),
                child: CupertinoSegmentedControl<OpenFileDialogType>(
                  children: const {
                    OpenFileDialogType.document: Text("document"),
                    OpenFileDialogType.image: Text("image"),
                  },
                  groupValue: _dialogType,
                  onValueChanged: (value) =>
                      setState(() => _dialogType = value),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(top: 24),
                child: CupertinoSegmentedControl<SourceType>(
                  children: const {
                    SourceType.photoLibrary: Text("photoLibrary"),
                    SourceType.savedPhotosAlbum: Text("savedPhotosAlbum"),
                    SourceType.camera: Text("camera"),
                  },
                  groupValue: _sourceType,
                  onValueChanged: (value) =>
                      setState(() => _sourceType = value),
                ),
              ),
              if (_dialogType == OpenFileDialogType.image)
                Padding(
                  padding: const EdgeInsets.only(top: 24),
                  child: CheckboxListTile(
                    title: const Text("Allow editing"),
                    value: _allowEditing,
                    onChanged: (v) => setState(() => _allowEditing = v),
                  ),
                ),
              Padding(
                padding: const EdgeInsets.only(top: 24),
                child: CheckboxListTile(
                  title: const Text("Copy file to cache dir"),
                  value: _copyFileToCacheDir,
                  onChanged: (v) => setState(() => _copyFileToCacheDir = v),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(top: 24),
                child: ElevatedButton(
                  onPressed: _pickFile,
                  child: const Text('Pick file'),
                ),
              ),
              if (_pickedFilePath?.isNotEmpty == true)
                Padding(
                  padding: const EdgeInsets.only(top: 24),
                  child: Text(_pickedFilePath),
                ),
              const SizedBox(
                height: 24,
              ),
              if (_currentFile?.existsSync() == true) ...[
                Text(
                    "${(_currentFile.lengthSync() / 1024.0).toStringAsFixed(1)} KB"),
                SizedBox(
                  width: 200,
                  height: 200,
                  child: Image.file(
                    _currentFile,
                  ),
                ),
              ],
              ElevatedButton(
                onPressed: _currentFile == null ? null : () => _saveFile(false),
                child: const Text('Save file'),
              ),
              ElevatedButton(
                onPressed: _currentFile == null ? null : () => _saveFile(true),
                child: const Text('Save file from data'),
              ),
              Text(_savedFilePath ?? "-"),
              if (_isBusy) const CircularProgressIndicator(),
              CheckboxListTile(
                title: const Text("Local only"),
                value: _localOnly,
                onChanged: (v) => setState(() {
                  _localOnly = v;
                }),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _pickFile() async {
    String result;
    try {
      setState(() {
        _isBusy = true;
        _currentFile = null;
      });
      final params = OpenFileDialogParams(
        dialogType: _dialogType,
        sourceType: _sourceType,
        allowEditing: _allowEditing,
        localOnly: _localOnly,
        copyFileToCacheDir: _copyFileToCacheDir,
      );
      result = await FlutterFileDialog.pickFile(params: params);
      print(result);
    } on PlatformException catch (e) {
      print(e);
    } finally {
      setState(() {
        _pickedFilePath = result;
        if (result != null) {
          _currentFile = File(result);
        } else {
          _currentFile = null;
        }
        _isBusy = false;
      });
    }
  }

  Future<void> _saveFile(bool useData) async {
    String result;
    try {
      setState(() {
        _isBusy = true;
      });
      final data = useData ? await _currentFile.readAsBytes() : null;
      final params = SaveFileDialogParams(
          sourceFilePath: useData ? null : _currentFile.path,
          data: data,
          localOnly: _localOnly,
          fileName: useData ? "untitled" : null);
      result = await FlutterFileDialog.saveFile(params: params);
      print(result);
    } on PlatformException catch (e) {
      print(e);
    } finally {
      setState(() {
        _savedFilePath = result ?? _savedFilePath;
        _isBusy = false;
      });
    }
  }
}