Cancel AsyncTask

Question

Is it possible to cancel AsyncTask that has one line command in doInBackground that performs a very long operation,like

@Override
protected Boolean doInBackground(String... filename) {
    fetchfile(filename[0]);
    // ...
    // ...
    return ...;
}

Check here: http://developer.android.com/reference/android/os/AsyncTask.html . Section: "Cancelling a task" — Dimitris Makris, Aug 28 '11 at 12:11
Duplicate: http://stackoverflow.com/questions/4748964/android-cancel-asynctask-forcefully — derekerdmann, Aug 28 '11 at 12:15
thank you for the response,my fetchFile simply checks for http connection and on connection it downloads a file, then where should i cancel the asynctask, — azzits, Aug 28 '11 at 12:21
correct way to cancel and asynctask in android http://www.quicktips.in/correct-way-to-cancel-an-asynctask-in-android/ — Deepak Swami, Jun 29 '16 at 17:07

score 0 · Accepted Answer · answered Aug 28 '11 at 12:12

0

You can AsyncTask.cancel() to cancel. You can cancel it inside the fetchFile method at an appropriate place where you feel it will not introduce inconsistencies in your data or at a place where its easier to rollback.

answered Aug 28 '11 at 12:12

Ron

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score 0 · Answer 2 · answered Aug 28 '11 at 12:45

0

In your long run method, periodically check isCanceled, if it's true, return from function ASAP so that async thread may be closed. And you may call cancel() from any thread.

answered Aug 28 '11 at 12:45

Pointer Null

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Cancel AsyncTask

2 Answers2