Flutter Advanced Network Imageprovider

pub package

An advanced image provider provides caching and retrying for flutter app. Now with zoomable widget and transition to image widget.

Getting Started

Installation

Add this to your pubspec.yaml (or create it):

dependencies:
  flutter_advanced_networkimage: any

Then run the flutter tooling:

flutter packages get

Example

// using image provider
Image(
  image: AdvancedNetworkImage(url, header: header, useDiskCache: true),
  fit: BoxFit.cover,
)
// get the disk cache folder size
int folderSize = await getDiskCachedImagesSize();
// clean the disk cache
bool isSucceed = await clearDiskCachedImages();
// using zooming widget & transitiontoimage widget
ZoomableWidget(
  minScale: 0.3,
  maxScale: 2.0,
  // default factor is 1.0, use 0.0 to disable boundary
  panLimit: 0.8,
  child: Container(
    child: TransitionToImage(
      AdvancedNetworkImage(url, timeoutDuration: Duration(minutes: 1)),
      // This is the default placeholder widget at loading status,
      // you can write your own widget with CustomPainter.
      placeholder: CircularProgressIndicator(),
      // This is default duration
      duration: Duration(milliseconds: 300),
    ),
  ),
)
// Reload feature included
TransitionToImage(
  AdvancedNetworkImage(url,
    loadedCallback: () {
      print('It works!');
    },
    loadFailedCallback: () {
      print('Oh, no!');
    }),
  loadingWidget: const CircularProgressIndicator(),
  fit: BoxFit.contain,
  placeholder: const Icon(Icons.refresh),
  width: 400.0,
  height: 300.0,
);
// Scale the widget size. (Origin point was fixed to screen's center)
ZoomableWidget(
  panLimit: 1.0,
  maxScale: 2.0,
  minScale: 0.5,
  singleFingerPan: true,
  multiFingersPan: true,
  child: Image(
    image: AssetImage('graphics/background.png'),
  ),
  zoomSteps: 3,
),

Details in example/ folder.

demo gif

Libraries

advanced_networkimage
disk_cache
WIP, do not use it
image_cropper
WIP, do not use it
transition_to_image
utils
zoomable_list
zoomable_widget

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]