image_downloader

Flutter plugin that downloads images on the Internet and saves them on device.
This will keep Exif(DateTimeOriginal) and GPS(Latitude, Longitude).

For Android, image is saved in Environment.DIRECTORY_DOWNLOADS.
For ios, image is saved in Photo Library.

Getting Started

ios

Add the following keys to your Info.plist file, located in /ios/Runner/Info.plist:

  • NSPhotoLibraryUsageDescription - Specifies the reason for your app to access the user’s photo library. This is called Privacy - Photo Library Usage Description in the visual editor.
  • NSPhotoLibraryAddUsageDescription - Specifies the reason for your app to get write-only access to the user’s photo library. This is called Privacy - Photo Library Additions Usage Description in the visual editor.

Android

Add this permission in AndroidManifest.xml.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

Example

bool isSuccess;
try {
  isSuccess = await ImageDownloader.downloadImage("https://flutter.io/images/flutter-mark-square-100.png");
} on PlatformException catch (_) {
  isSuccess = false;
}

True if saving succeeded.
False if not been granted permission.
Otherwise it is a PlatformException.

Libraries

image_downloader

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. [...]