photos_library 0.0.4

  • README.md
  • CHANGELOG.md
  • Example
  • Installing
  • Versions
  • 74

photos_library

A simple flutter plugin to demo how to interact to system gallery. Only iOS PhotosKit is supported for now:

  1. get authorization status
  2. request Photos authorization status
  3. fetch assets metadata
  4. fetch assets' thumbnail image in binary form, then sent to flutter side
  5. (in example) display binary-form image with Image.memory

Methods

  1. PhotosLibrary.authorizeationStatus
  2. PhotosLibrary.requestAuthorization
  3. PhotosLibrary.fetchMediaWithType
  4. PhotosLibrary.requestThumbnail

Notes

For authorizing to Photos library, you need to add NSPhotoLibraryUsageDescription into your info.plist in project

History:

Version 0.0.4:

  1. added @required to width and height parameters

Version 0.0.3:

  1. Breaking API of 0.0.2
  2. changed deliverMode to PHImageRequestOptionsDeliveryModeOpportunistic for [PHImageManager requestImageForAsset:targetSize:contentMode:options:resultHandler:] message. using PHImageRequestOptionsDeliveryModeFastFormat makes API only return very low resolution image. but using PHImageRequestOptionsDeliveryModeOpportunistic makes multiple calls to get different resolution images, so
  3. Because 2. has multiple calls to get images, in 0.0.2, the message handler is set inside Asset instance, but Dart's object doesn't have a deconstructor like method to call unregister message handler, and I move the example's AssetView into lib, and have the unregistering inside deactive of the Widget.

License

Copyright 2018 Yang Hongbo

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

0.0.2

  • changed sdk constraint

0.0.1

  • added iOS support only
  • access to authorization status
  • requset authorization to Photos Library
  • fetch assets from Photos Library
  • fetch assets' thumbnails in binary data form and then sent to flutter side (without saving to a local image file like iamge_picker did), displaying with Image.memory

example/lib/main.dart

import 'package:flutter/material.dart';

import 'homeview.dart';

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

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

class _MyAppState extends State<MyApp> {

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

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Photos Library'),
        ),
        body: HomeView(),
      ),
    );
  }
}

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  photos_library: ^0.0.4

2. Install it

You can install packages from the command line:

with Flutter:


$ flutter packages get

Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:photos_library/photos_library.dart';
  
Version Uploaded Documentation Archive
0.0.4 Sep 30, 2018 Go to the documentation of photos_library 0.0.4 Download photos_library 0.0.4 archive
0.0.3 Sep 30, 2018 Go to the documentation of photos_library 0.0.3 Download photos_library 0.0.3 archive
0.0.2 Aug 10, 2018 Go to the documentation of photos_library 0.0.2 Download photos_library 0.0.2 archive
0.0.1 Aug 9, 2018 Go to the documentation of photos_library 0.0.1 Download photos_library 0.0.1 archive
Popularity:
Describes how popular the package is relative to other packages. [more]
52
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
90
Overall:
Weighted score of the above. [more]
74
Learn more about scoring.

We analyzed this package on Oct 10, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0
  • pana: 0.12.4
  • Flutter: 0.9.5

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Health suggestions

Fix lib/asset.dart. (-0.50 points)

Analysis of lib/asset.dart reported 1 hint:

line 1 col 8: Unused import: 'dart:typed_data'.

Format lib/assetview.dart.

Run flutter format to format lib/assetview.dart.

Maintenance suggestions

Package is pre-v0.1 release. (-10 points)

While there is nothing inherently wrong with versions of 0.0.*, it usually means that the author is still experimenting with the general direction of the API.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.19.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11
meta 1.1.6
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8