Re: [android-developers] pass parameters between threads

".. What you said there doesn't make sense. A variable has to be explicitly declared as a class or instance member; it doesn't just magically appear when you remove a local variable."

I think what John was describing does make sense. He had inadvertently created a new response var in an inner scope, thereby effectively masking out his pre-existing instance var of the same name; therefore the response data was being discarded each time the inner scope was exited.

On Jan 8, 2013 6:29 PM, "John Merlino" <stoicism1@aol.com> wrote:

I have a thread to make a web service request. And then I get the data
and store it in response variable. Now I need to add items to the map
on the main thread, but how do i get the response data back in the
main thread. Here is what I have:

private void processHistory(final String authkey, final String unitId)
{
                new Thread(){
                        public void run(){
                                List<Map<String, String>> response =
WebService.getHistoryData("today",unitId,authkey);


                                myHandler.post(myRunnable);

                        }
                }.start();
        }

        final Runnable myRunnable = new Runnable() {
              public void run() {

                                Iterator<Map<String, String>> iterator = response.iterator();

                                while(iterator.hasNext()){
                                        Map<String, String> item = iterator.next();

                                        mMap.addMarker(new MarkerOptions()
                                .position(new
LatLng(Double.parseDouble(item.get("latitude")),
Double.parseDouble(item.get("longitude"))))
                                .title(item.get("address")));
                                }

              }
           };

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