I don't generally use wifi unless there is an explicit reason to do so 
(poor cell coverage AND good wifi coverage...a rare combination).  My data 
plan and data usage do not drive me to go to wifi (e.g. to save bandwidth).

On Friday, November 2, 2012 7:06:52 AM UTC-7, bob wrote:
>
> Are you using WiFi or your phone's data connection?
>
>
> I saw this strange issue with this Origami Iris game where it would 
> somehow load a page from the cache if I used my MetroPCS connection.  
> Didn't happen on Wifi though.  Very weird.
>
>
>
> On Friday, November 2, 2012 1:27:38 AM UTC-5, Keith Wiley wrote:
>>
>> A few weeks ago I mentioned that I was experiencing unwanted http caching 
>> (I mentioned it here because I wasn't sure if the cause of the problem was 
>> the Android OS performing the caching in a way that didn't make sense to 
>> me).  At the time, it was suggested that I experiment with getUseCaches() 
>> and setUseCaches().  This has definitely not solved the problem.  First of 
>> all, it does indeed appear that caching is enabled by default (as is 
>> GZipping the stream interestingly, I think I've read about this 
>> somewhere).  However, setting caching false doesn't help.  Not only does my 
>> app not confidently load an updated version of the file from the server, 
>> but it doesn't even detect that the file is gone from the server (if I 
>> change its name for example).  Rather, the app still happily retrieves the 
>> cached version of the file, even though I'm calling setUseCaches(false).  
>> Does anyone have any thoughts on how else to fix this problem?  I know 
>> there is a solution because the phone's web browser app (actually, I'm 
>> using Dolphin) properly loads the server version of the file every time.
>>
>> Once again, I don't mean to bring this up on an Android forum if it 
>> really isn't an Android issue...but I'm not sure whether the problem is 
>> coming from the Android system for some reason (I'm not sure whether I 
>> should expect my code to work in any other Java environment, just not 
>> Android).  Where else might the cache be coming from if the URLConnection's 
>> useCaches variable is definitely false (verified as I step over 
>> setUseCaches(false) in the debugger)?
>>
>> I'm sorry if this is off-topic, I appreciate any help.  Here's how I load 
>> the file:
>>
>>     String address = "httpUrlOfFileOnMyWebserver";
>>     URL url = new URL(address);
>>     HttpURLConnection conn = (HttpURLConnection) url.openConnection();
>>     if (conn.getUseCaches())
>>         conn.setUseCaches(false);
>>     InputStream is = (InputStream)conn.getContent();
>>     Reader reader = new InputStreamReader(is, "UTF-8");
>>     StringWriter writer = new StringWriter();
>>     char[] buffer = new char[1024];
>>     for (int length = 0; (length = reader.read(buffer)) > 0;)
>>         writer.write(buffer, 0, length);
>>     is.close();
>>     reader.close();
>>     writer.close();
>>     String fileStr = writer.toString();
>>
>>

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