How can I prevent an Android-App from sending background data after closing?

Question

I have an Android app that should stay closed if it lose focus. But if the app is closed it still sends background data. How can I prevent the app from sending it or find out which async threads are still active?

I have active logs for all connections. But if I close the app, I don't get logs in Eclipse any more — iMx, Jul 04 '13 at 10:10

score 2 · Answer 1 · answered Jul 04 '13 at 10:11

try this:-

Suppose you have one AsyncTask like:-

class BackgroundFetching extends AsyncTask<Void, Void, Integer>
    {

    }

make its object like

private BackgroundFetching mFetching ;

now when app is closing, cancel this AsyncTask like:-

@Override
protected void onPause() {
    super.onPause();
        if(null != mFetching && mFetching.getStatus() == AsyncTask.Status.RUNNING)
        {
            mFetching.cancel(true);
            mFetching = null;
        }
}

I have too many connections, but I'll see what I can do. Thanks — iMx, Jul 04 '13 at 10:36

score 0 · Answer 2 · edited May 23 '17 at 10:28

0

Detect if the application goes to backgound described here

Than send / set a flag to your classes to stop they activity of sending data.

edited May 23 '17 at 10:28

Community

1
1

answered Jul 04 '13 at 10:07

I do it this way: onUserLeaveHint(): activity.finish(); int pid = android.os.Process.myPid(); android.os.Process.killProcess(pid); Should I separately close all other activities? – iMx Jul 04 '13 at 10:11
not enough to kill the process programamtically :) some services aren't killed. kill they logic :) – Jul 04 '13 at 10:13
So I have to log all started services and kill them on app stop? – iMx Jul 04 '13 at 10:35
@iMx I would do like this: step 1 detect the app when enters in background. Step2. Set a boolean flag to all of your running async tasks (need to keep reference of they ofc. Step 3: in the async task if the flag is set, than stop the task, do not run anymore. Nothing to do with logcat or process kill – Jul 04 '13 at 10:47
for what should stay the boolean flags? – iMx Jul 08 '13 at 12:31
@iMx while(canRun){processAChunkOfData(data);} something like that – Jul 08 '13 at 12:40

score 0 · Answer 3 · answered Jul 04 '13 at 10:10

0

Kill the application when it lose focus, in other term onPause

@Override
protected void onPause() 
{
    super.onPause();
    finish();
}//End of onPause method

answered Jul 04 '13 at 10:10

Chethan Shetty

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How can I prevent an Android-App from sending background data after closing?

3 Answers3