Question

the Problem I am having is that the PostExecute is not firing.
I see the log tag for background but P.E. never fires.

I am invoking this task from a timer like this:

      findViewById(R.id.buttonstart).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                try {
                    openFile("FeedTimerTask.html");
                    Timer t = new Timer("FeedTimerTask", true);
                    timerTask = new FeedTimerTask();
                    t.schedule(timerTask, 2000, 20000);
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        });

Runnable runme = new Runnable() {

        @Override
        public void run() {
            timestart = Calendar.getInstance().getTimeInMillis(); 
            provider.refreshNoCache();


        }
    };

     class FeedTimerTask extends TimerTask{

        @Override
        public void run() {
            try{Looper.prepare();}catch(Exception e){};
            runme.run();

        }

     }

Here is the main task itself from inside the dataprovider class invoked with “provider.refreshNoCache();” above:

// threaded rteftesh tasks
@SuppressWarnings("rawtypes")
public class RefreshTask extends SupportAsyncTask {

    private int errorcodecode = 0;
    private ProgressDialog dialog=null;
    private Exception mainExeption=null;
    protected  String waitMessage = "Laddar ner information..";
    private boolean useCache;

    public RefreshTask(boolean useCache) {
        this.useCache = useCache;
    }

    public void onPreExecute() {
        data = null;
        if (showSpinnerOnRefresh){
            dialog = ProgressDialog.show(context, "", waitMessage , true);
            dialog.show();
        }
    }

    protected Object doInBackground(Object... params) {
        errorcodecode = 1;
            try {
                invokeFeedRead();
                Log.e("DataProvider", "Bkgtask...");
                errorcodecode = 0;
            } catch (BrJSONException e) {
                Log.e("[ERROR]","PROVIDER "+e.getMessage());
                mainExeption = e;
                errorcodecode = 1;
            } catch (IOException e) {
                Log.e("[ERROR]","PROVIDER "+e.getMessage());
                mainExeption = e;
                errorcodecode = 2;
            } catch (Exception e) {
                Log.e("[ERROR]","PROVIDER "+e.getMessage());
                mainExeption = e;
                errorcodecode = 3;
            }

        if (errorcodecode==0){ 
        }
        return null;
    }

    @Override
    protected void onCancelled() {

        super.onCancelled();
        Log.e("DataProvider", "Cancelled...");

        if (dialog != null)
            try{dialog.dismiss();}catch(Exception e){}
        BrAlert.Show(context, "Obs", BrAppConfig.ServerError+" (timeout)", 0);
        onError_IO(new IOException("Timeout!"));
        errorcodecode=2;


    }

    @Override
    protected void onPostExecute(Object result) {
        // super.onPostExecute(result);
        Log.e("DataProvider", "PostExec...");

        if (dialog != null)
            try{dialog.dismiss();}catch(Exception e){}

        switch (errorcodecode) {
        case 0:
            onFeedLoaded();             
            cacheAge = System.currentTimeMillis();
            break;
        case 1:
            onError_DataFormat(mainExeption);
            break;
        case 2:
            onError_IO(mainExeption);
            break;
        default:
            onError_GeneralExeption(mainExeption);

        }


    }

}

Answer 1

Your task is cancelled even before it reached onPostExecte method. If the task is cancelled before it reaches onPostExecute Method. It will not trigger onPostExecute but trigger onCancelled Method. Please provide enough time to finish the task.