Image Cropper

A Flutter plugin for Android and iOS supports cropping images

pub package

Installation

Android

  • Add UCropActivity into your AndroidManifest.xml
<activity
    android:name="com.yalantis.ucrop.UCropActivity"
    android:screenOrientation="portrait"
    android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>

iOS

  • No configuration required

Example

Future<Null> _cropImage(File imageFile) async {
    File croppedFile = await ImageCropper.cropImage(
      sourcePath: imageFile.path,
      ratioX: 1.0,
      ratioY: 1.0,
      maxWidth: 512,
      maxHeight: 512,
    );
}

Credits

This plugin is based on two native libraries:

Libraries

image_cropper

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. [...]