AsyncTask:OnPostExecute是否保证在调用OnProgressUpdate之后运行?

代码到 publishProgress 是:

protected final void publishProgress(Progress... values) {
    sHandler.obtainMessage(MESSAGE_POST_PROGRESS,
            new AsyncTaskResult<Progress>(this, values)).sendToTarget();
}

这个 sendToTarget 调用使用 Handler#sendMessage which the docs say "pushes the message onto the end of the message queue." I understand that to mean that you will not get any out of order updates and that they will stack up. 此外,对于每个 出版进展 呼叫会有相应的 onProgressUpdate 打电话。

嗯,很抱歉,不管之前的回答是什么,我都会回答的: 是的,您可以保证在调用onProgressUpdate()之后调用onPostExecute()。

为什么?Because the doInBackground is responsible for invoking onProgressUpdate(), so it can't happen outside of it. onPostExecute() is invoked after the result has been retrieved, since it does transmit it to onPostExecute()

当做