I came to the same conclusion as droidDev due to this:
" Iterator<Map<String, String>> iterator = response.iterator(); "
If 'response' isnt a class variable, that would not compile. Also, in his
second comment he pretty much confirmed that was the case. I dont think he
meant to say that by omitting the local deceleration it became a member
variable, rather that because he made the second deceleration, it became
local (which he didnt know would happen, since he needs some studying on
Scopes :-P )
On Wednesday, January 23, 2013 6:26:00 PM UTC-8, Lew wrote:
>
> droidDev wrote:
>
> You forgot to attribute the quote there, sport.
> Lew said:
>
>> ".. 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.
>>
> How do you know that? His code showed nothing like that. There was no
> instance variable,
> or even class definition shown. He referred to a 'type declaration "
> Map<String, String>"' but
> nothing was shown declared to be that type. The only place that appeared
> was in a generic
> type argument, but removing that would not un-shadow ("mask" is not a Java
> term) an instance
> variable.
>
> Evidence?
>
>> "John Merlino" 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")));
>>> }
>>>
>>> }
>>> };
>>>
>>>
> --
> Lew
>
>
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