How to completely kill/remove/delete/stop an AsyncTask

Question

I made an app that downloads videos from our server. The issue is:

When i cancel the downloading i call:

myAsyncTask.cancel(true)

I noticed, that myAsyncTask doesn't stops on calling cancel... my ProgressDialog still goes up and its like jumping from status to status showing me that each time I cancel and start again an AsyncTask by clicking the download button, a new AsyncTask starts... Each time I click download.. then cancel, then again download a separate AsyncTask starts.

Why is myAsynTask.cancle(true) not cancelling my task ? I don't want it anymore on the background. I just want to completely shut it down if I click cancel.

How to do it ?

E D I T:

Thanks to gtumca-MAC, and the others who helped me did it by:

while (((count = input.read(data)) != -1) && (this.isCancelled()==false)) 
{
    total += count;
    publishProgress((int) (total * 100 / lenghtOfFile));
    output.write(data, 0, count);
}

Thanks!!!

Answer 1

AsyncTask does not cancel process on

myAsynTask.cancel(true)  

For that you have to stop it manually.

for example you are downloading video in doInBackground(..) in while/for loop.

protected Long doInBackground(URL... urls) {           for (int i = 0; i < count; i++) {           // you need to break your loop on particular condition here               if(isCancelled())                   break;                       }          return totalSize;      } 

Answer 2

Declare in your class

DownloadFileAsync downloadFile = new DownloadFileAsync(); 

then On Create

DownloadFileAsync downloadFile = new DownloadFileAsync(); downloadFile.execute(url); 

in Your Background ()

if (isCancelled())     break;  @Override protected void onCancelled(){  } 

and you can kill your AsyncTask by

downloadFile.cancel(true); 

Answer 3

When you start a separate thread(AyncTask) it has to finish. You have to manually add a cancel statement to your code inside the AsyncTask.

A task can be cancelled at any time by invoking cancel(boolean). Invoking this method will cause subsequent calls to isCancelled() to return true. After invoking this method, onCancelled(Object), instead of onPostExecute(Object) will be invoked after doInBackground(Object[]) returns. To ensure that a task is cancelled as quickly as possible, you should always check the return value of isCancelled() periodically from doInBackground(Object[]), if possible (inside a loop for instance.)

Checkout more in the documentation: http://developer.android.com/reference/android/os/AsyncTask.html