Flutter/外部ライブラリ/image picker saver

画像ダウンロード

(new ImageDownload()).onImageSaveButtonPressed(widget.imgs[pageIndex].url);

import 'dart:io';
import 'package:image_picker_saver/image_picker_saver.dart';
import 'package:http/http.dart' as http;
class ImageDownload {
  void onImageSaveButtonPressed(String url) async {
    var response = await http.get(url);
    var filePath = await ImagePickerSaver.saveFile(
        fileData: response.bodyBytes);
    var savedFile = File.fromUri(Uri.file(filePath));
    Future<File>.sync(() => savedFile);
  }
}