content_resolver 0.3.2

A plugin that help app to call ContentResolver on Android.

example/lib/main.dart

import 'dart:async';
import 'dart:io';
import 'dart:typed_data';

import 'package:app_links/app_links.dart';
import 'package:content_resolver/content_resolver.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:rxdart/rxdart.dart';

void main() {
  runApp(MyApp());
}

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

class _MyAppState extends State<MyApp> {
  final _contentSubject = PublishSubject<Content>();
  late final StreamSubscription<String> _appLinksSub;

  @override
  void initState() {
    super.initState();
    // This example illustrates how to deal with the content intent with ContentResolver.
    _appLinksSub = AppLinks().stringLinkStream.listen(_handleUri);
    Future.microtask(() async {
      _handleUri(await AppLinks().getInitialLinkString());
    });
  }

  Future<void> _handleUri(String? uri) async {
    if (uri == null) return;
    final metadata = await ContentResolver.resolveContentMetadata(uri);
    final bb = BytesBuilder();
    ContentResolver.resolveContentToStream(uri).listen((event) {
      bb.add(event);
    }, onDone: () {
      _save(bb.toBytes());
      _contentSubject.add(
        Content(
          data: bb.toBytes(),
          mimeType: metadata.mimeType,
          fileName: metadata.fileName,
        ),
      );
    });
  }

  Future<void> _save(Uint8List data) async {
    final dir = await getExternalStorageDirectory();
    await dir!.create(recursive: true);
    await File('${dir.path}/test.jpg').writeAsBytes(data);
  }

  @override
  void dispose() {
    _appLinksSub.cancel();
    _contentSubject.close();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('ContentResolver example app'),
        ),
        body: StreamBuilder<Content>(
            stream: _contentSubject.stream,
            builder: (context, snapshot) {
              return Center(
                child: snapshot.hasData
                    ? Image.memory(snapshot.data!.data)
                    : Text('Nothing received.'),
              );
            }),
      ),
    );
  }
}