flutter_image_compress 0.1.2

compress image with native code(objc kotlin), it's faster.

flutter_image_compress

compress image with native code(objc kotlin)

why

Q：Dart has image related libraries to compress. Why use native?

A：For efficiency reasons, the compression efficiency of some dart libraries is not high, and it will be stuck to UI, even if isolate is used.

use

dependencies:
  flutter_image_compress: ^0.1.0

import 'package:flutter_image_compress/flutter_image_compress.dart';

use:

  Future<List<int>> testCompressFile(File file) async {
    var result = await FlutterImageCompress.compressWithFile(
      file.absolute.path,
      minWidth: 2300,
      minHeight: 1500,
      quality: 94,
    );
    print(file.lengthSync());
    print(result.length);
    return result;
  }

  Future<File> testCompressAndGetFile(File file, String targetPath) async {
    var result = await FlutterImageCompress.compressAndGetFile(
        file.absolute.path, targetPath,
        quality: 88);

    print(file.lengthSync());
    print(result.lengthSync());

    return result;
  }

  Future<List<int>> testCompressAsset(String assetName) async {
    var list = await FlutterImageCompress.compressAssetImage(
      assetName,
      minHeight: 1920,
      minWidth: 1080,
      quality: 96,
    );

    return list;
  }

  Future<List<int>> testComporessList(List<int> list) async {
    var result = await FlutterImageCompress.compressWithList(
      list,
      minHeight: 1920,
      minWidth: 1080,
      quality: 96,
    );
    print(list.length);
    print(result.length);
    return result;
  }

about List

use in Image Widget

    List<int> list = await testCompressFile(file);
    ImageProvider provider = MemoryImage(list);

    Image(
      image: provider ?? AssetImage("img/img.jpg"),
    ),

write to file

  void writeToFile(List<int> list, String filePath) {
    var file = File(filePath);
    file.writeAsBytes(list, flush: true, mode: FileMode.write);
  }