How to stop asynctask thread in android

Question

I want to stop a AsyncTask thread from another AsyncTask thread  I have tried like new AsyncTask cancel true  to stop the background process but it didn t stop   Could any one help me on this

User · Answer

You can t just kill asynctask immediately  In order it to stop you should first cancel it   task cancel true     and than in asynctask s doInBackground   method check if it s already cancelled   isCancelled     and if it is  stop executing it manually

User · Answer

u can check onCancelled   once then    protected Object doInBackground Object    x     while     condition         if  isCancelled    break    return null

User · Answer

You may also have to use it in onPause or onDestroy of Activity Life Cycle     you may call the cancel   method but if it is not handled in doInBackground   method if  loginTask    null  amp  amp  loginTask getStatus      AsyncTask Status FINISHED      loginTask cancel true     where loginTask is object of your AsyncTask  Thank you

User · Answer

The reason why things aren t stopping for you is because the process  doInBackground    runs until it is finished  Therefore you should check if the thread is cancelled or not before doing stuff   if  isCancelled        Do your stuff     So basically  if the thread is not cancelled  do it  otherwise skip it    Could be useful to check for this some times during your operation  especially before time taking stuff   Also it could be useful to  clean up  alittle in  onCancelled      Documentation for AsyncTask   http   developer android com reference android os AsyncTask html  Hope this helps

User · Answer

I had a similar problem - essentially I was getting a NPE in an async task after the user had destroyed the fragment  After researching the problem on Stack Overflow  I adopted the following solution   volatile boolean running   public void onActivityCreated  Bundle savedInstanceState         super onActivityCreated savedInstanceState        running true                  public void onDestroy         super onDestroy         running false              Then  I check  if running  periodically in my async code  I have stress tested this and I am now unable to  break  my activity  This works perfectly and has the advantage of being simpler than some of the solutions I have seen on SO

User · Answer

declare your asyncTask in your activity   private YourAsyncTask mTask    instantiate it like this    mTask   new YourAsyncTask   execute       kill cancel it like this    mTask cancel true

[android] How to stop asynctask thread in android?

Examples related to android

Examples related to android-asynctask