downloadFile method

Future<bool> downloadFile(String url, String savePath, { int? receiveTimeout = downLoadReceiveTimeout, Options? options, CancelToken? cancelToken, ProgressCallback? onReceiveProgress, })

下载文件

[url] 下载地址

[savePath] 本地保存的地址

[receiveTimeout] 下载文件超时时间ms

[options] 针对当前请求的配置选项

[onReceiveProgress] 下载进度

return 是否下载成功

Implementation

Future<bool> downloadFile(
  String url,
  String savePath, {
  int? receiveTimeout = downLoadReceiveTimeout,
  Options? options,
  CancelToken? cancelToken,
  ProgressCallback? onReceiveProgress,
}) async {
  LogUtil.v(_tag, 'downloadFile() url:$url  savePath:$savePath');
  bool isSuccess;

  ///添加CancelToken,用于取消请求
  cancelToken ??= CancelToken();
  _cancelTokenList.add(cancelToken);

  ///设置超时时间
  if (receiveTimeout != null) {
    options ??= Options();
    options.receiveTimeout = receiveTimeout;
  }

  try {
    await _dio.download(url, savePath,
        cancelToken: cancelToken,
        onReceiveProgress: onReceiveProgress,
        options: options);
    isSuccess = true;
    LogUtil.v(_tag, 'downloadFile() success, url:$url  savePath:$savePath');
  } catch (e) {
    LogUtil.v(_tag, 'downloadFile fail:$e');
    isSuccess = false;
  }

  ///请求完成移除cancelToken
  _cancelTokenList.remove(cancelToken);
  return isSuccess;
}