scoped_storage 0.0.1

Scoped storage for flutter (Android 30)

example/lib/main.dart

import 'dart:typed_data';

import 'package:flutter/material.dart';

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

void main() {
  runApp(MaterialApp(home: ScopedStorageDemo()));
}

class ScopedStorageDemo extends StatefulWidget {
  @override
  _ScopedStorageDemoState createState() => _ScopedStorageDemoState();
}

class _ScopedStorageDemoState extends State<ScopedStorageDemo> {
  BuildContext scaffoldContext;
  TextEditingController directory = TextEditingController();
  TextEditingController filename = TextEditingController();
  double compression = 95;
  CompressFormat selectedFormat = CompressFormat.PNG;
  List<dynamic> images = [];

  // _fetch() async {
  //   images = await ScopedStorage.getImages(subDirectory: directory.text);
  //   setState(() {
  //     print(images.join(','));
  //   });
  // }

  _save() async {
    try {
      ByteData bytes = await rootBundle.load('assets/bird.jpg');
      var buffer = bytes.buffer;
      final res = await ScopedStorage.saveImage(
          Uint8List.view(buffer), filename.text,
          subDirectory: directory.text,
          compressFormat: selectedFormat,
          compression: compression.toInt());
      showDialog(
          context: context,
          builder: (context) => AlertDialog(
                title: Text((res is bool && res) ? 'Success' : 'Fail'),
                content: Text('Response: $res'),
                actions: [
                  ElevatedButton(
                      onPressed: () => Navigator.pop(context),
                      child: Text('OK'))
                ],
              ));
    } catch (_) {
      showDialog(
          context: scaffoldContext,
          builder: (context) => AlertDialog(
                title: Text('Failed to save'),
                content: SingleChildScrollView(child: Text('Err: $_')),
                actions: [
                  ElevatedButton(
                      onPressed: () => Navigator.pop(context),
                      child: Text('OK'))
                ],
              ));
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Plugin example app'),
      ),
      body: Builder(builder: (context) {
        this.scaffoldContext = context;
        return SingleChildScrollView(
          child: Padding(
            padding: const EdgeInsets.all(16),
            child: Column(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: [
                  Text('Filename:\nDefault: System.currentTimeMillis()'),
                  TextField(
                    controller: filename,
                    decoration: new InputDecoration(
                        border: OutlineInputBorder(), hintText: "Image_01"),
                  ),
                  SizedBox(height: 16),
                  Text('Sub directory inside /Pictures:\nDefault: /Pictures'),
                  TextField(
                    controller: directory,
                    decoration: new InputDecoration(
                        border: OutlineInputBorder(), hintText: "MyApp"),
                  ),
                  SizedBox(height: 16),
                  Text('Compression:\nDefault: 95'),
                  Slider(
                      value: compression,
                      min: 0,
                      max: 100,
                      onChanged: (newValue) =>
                          setState(() => compression = newValue)),
                  SizedBox(height: 16),
                  Text('Compress Format:\nDefault: PNG'),
                  DropdownButton<CompressFormat>(
                      value: selectedFormat,
                      onChanged: (CompressFormat newValue) =>
                          setState(() => selectedFormat = newValue),
                      items:
                          CompressFormat.values.map((CompressFormat classType) {
                        return DropdownMenuItem<CompressFormat>(
                            value: classType,
                            child: Text(classType.toString()));
                      }).toList()),
                  SizedBox(height: 16),
                  ElevatedButton(onPressed: _save, child: Text('Save')),
                  // SizedBox(height: 16),
                  // ElevatedButton(
                  //     onPressed: _fetch, child: Text('fetch Images')),
                  // Container(
                  //   width: 100,
                  //   height: 100,
                  //   child: ListView.builder(
                  //     itemCount: images.length,
                  //     itemBuilder: (context, index) => Container(
                  //       padding: EdgeInsets.all(2),
                  //       child:
                  //           Image.file(File.fromUri(Uri.parse(images[index]))),
                  //     ),
                  //     scrollDirection: Axis.horizontal,
                  //   ),
                  // )
                ]),
          ),
        );
      }),
    );
  }
}