里面的AsyncTask的Andr​​oid的AsyncTask [英] Android AsyncTask inside AsyncTask

问题描述

所以，我正在一家酒吧code德codeR，这一次，我们有条code去倍数API在互联网上脱code什么只是扫描。 事情是，我必须链接一些XML解析在一起，我不知道如果我这样做是正确的。

So, I'm working on a barcode decoder, which once we have the barcode goes to multiples API over the internet to decode what was just scanned. The thing is that I have to link some XML parsing together, and I don't know if I'm doing it right.

所以，一旦吧code扫描，我的程序调用AsyncTask的肚里了一个API来检索产品名称。一旦它的名字，我想它调用另一个AsyncTask的。我知道这是可能通过实例的 onPostExecute（）其他的ASyncTaks但是，我认为这是错误的，因为它像框内框。 所以，是不是有可能/最好实例我第二次的AsyncTask里面我的主要活动，并使其等到我的第一个AsyncTask的完成？

So, once the barcode is scanned, my program calls an ASyncTask which goes over an API to retrieve the product name. Once it has the name, I want it to call another ASyncTask. I know this is possible by instantiating an ASyncTaks in the onPostExecute() of the other but, I think this is wrong, because it's like boxes within boxes. So isn't it possible/better to instantiate my second ASyncTask inside my main Activity, and make it wait until my first ASyncTask is finished ?

（英语不是我的母语，我希望我自己清楚）。

(english isn't my primary language, I hope I made myself clear).

推荐答案

我认为这是绝对合法的，开始第二个的AsyncTask 在 onPostExecute ，混合这两种操作是一个糟糕的逻辑思路，为子孙之称的 - 你得陪他们分离

I think it's absolutely legitimate to start the second AsyncTask in the onPostExecute of the first AsyncTask, Mixing both operations is a bad logical idea, As "The Offspring" said - "You've gotta keep 'em separated"

如果你不希望它是直接在 onPostExecute 本身，设置一个处理程序中的活动执行，并从 onPostExecute 。

If you don't want it to be directly inside the onPostExecute itself, set a handler to execute it in the activity and call this handler from onPostExecute.

和最后一件事 - 如果你有大量的逻辑 - 将其移动到一个单独的文件，不要让这一切在同一文件

And last thing - If you have a lot of logic - move it to a separate file, don't keep it all at the same file.

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