如何让我的应用程式等到AsyncTask完成工作再继续执行其他工作（Android）

Question

I am doing a geocoding get request using AsyncTask which needs to finish executing, before proceeding to call another AsyncTask which will use the results from the geocoding request to make another call to another endpoint from the MainActivity.

I thought about forcing it to loop in a while using a "done" flag, set by the first AsyncTask, that may not even work however and it seems very hacky. Does anybody have an idea how to handle this?

Answer 1

AsyncTask s have the hook method onPostExecute() , where you can process its results.

From there, you can simply trigger any methods you want to be executed after the AsyncTask is finished.

For example:

 protected void onPostExecute(Long yourResult) {
     processYourResult(yourResult);

     // Method startMoreLogic() will be executed after the AsyncTask is finished.
     startMoreLogic();
 }

Answer 2

make your asynctask as a private class and put everything that wait for result at onPoseExecute().

Or add .get() to the method where you call your asynctask.