如何在flutter中从app + web中的URL下载图像？

Question

是否有任何软件包或方法可用于从网页和应用程序中的颤振中的 URL 保存/下载图像。

Answer 1

You can use Firebase storage or s3-Cognito to achieve this. First, you need to upload the image to the Database using file picker or image picker and use the getDownloadUrl() method to get the imageUrl

Answer 2

You don't need a package.

import 'package:http/http.dart' as http;
import 'package:flutter/material.dart';
import 'dart:typed_data';

TextButton(
        onPressed: () async {
          String imageUrl='https://......example';
          Uint8List response = await http.get(Uri.parse(imageUrl)).then(
          (value) => value.bodyBytes);
          
          showDialog(
            context: context,
            builder: (BuildContext context) {
              return AlertDialog(
              content: Image.memory(response),
              );
            },
          );
        },
        child: Text(
          'Show Image from memory',
        ));

This code alone works without any packages. Now that you have it in memory, you can store it and do other things with it. Convert it between base64 and Unit8List.