Flutter入门疑难杂症：wechat_kit 获取网络图片调用微信分享

在用wechat kit分享的时候，遇到分享网页，但是图片需要使用自己服务端的图片链接，且图片可能大于32*1024的问题。
解决方案：
先下载图片，再进行压缩。贴代码：

  //加载网络图片
  static Future<Uint8List> compressWebImage(
      int targetSize, String imgUrl) async { 
    Uint8List bytes;
    if (imgUrl != null) { 
      try { 
        HttpClient _httpClient = HttpClient();
        Uri resolved = Uri.base.resolve(imgUrl);
        HttpClientRequest request = await _httpClient.getUrl(resolved);
        HttpClientResponse response = await request.close();
        if (response.statusCode == HttpStatus.ok) { 
          bytes = await MediaUtils.compressImgWithInt(
              30 * 1024, await consolidateHttpClientResponseBytes(response));
        }
      } catch (e) { 
        bytes = null;
        print(e);
      }
    }
    return bytes;
  }
  //调整大小
 static Future<List<int>> compressImgWithInt(
      int targetSize, Uint8List bytes) async { 
    List<int> resizeBytes = await FlutterImageCompress.compressWithList(bytes,
        minHeight: 200, minWidth: 200, quality: 40);
    if (Uint8List.fromList(resizeBytes).length > targetSize) { 
      resizeBytes = await FlutterImageCompress.compressWithList(bytes,
          minHeight: 200, minWidth: 200, quality: 20);
    }
    return Uint8List.fromList(resizeBytes);
  }

主要是下载图片，并进行压缩到32*1024那部分的代码。
最后调用分享：

_wechat.shareWebpage(
        scene: scene,
        description: des,
        title: title,
        webpageUrl: targetUrl,
        thumbData: bytes);

分享集成的话自己去看下 wechat kit 吧。

本文地址：https://blog.csdn.net/WZAHD/article/details/108578508