onProgress method

void onProgress(
  1. dynamic handler(
    1. String progressToken,
    2. double progress,
    3. String message
    )
)

Register a handler for progress updates from the server (the 2.x form).

The handler is called with the notification's progressToken (as a string), its progress and its message ('' when absent). Use onProgressNotification for total and _meta.

Implementation

void onProgress(
  Function(String progressToken, double progress, String message) handler,
) {
  onProgressNotification((p) =>
      handler('${p.progressToken}', p.progress.toDouble(), p.message ?? ''));
}