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From: Dirk Bruere at NeoPax <dirk.bruere@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Android: create drawable from path
Date: Fri, 15 Apr 2011 00:52:52 +0100
Organization: Dirk Bruere at Neopax
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On 14/04/2011 23:32, Lew wrote:
> On 04/14/2011 04:32 PM, Dirk Bruere at NeoPax wrote:
>> On 14/04/2011 20:06, Lew wrote:
>>> On Apr 14, 1:37 pm, Dirk Bruere at NeoPax<dirk.bru...@gmail.com>
>>> wrote:
>>>> For some reason d=null when creating a drawable from coverArtURLStr,
>>>> which is the full http path to the resource on the LAN.
>>>>
>>>
>>> Are you certain that value is what the method sees?
>>>
>>>> Anything obvious wrong? It's a path to a .png
>>>> [I can access the LAN OK, and Data.defaultCoverArt works fine]
>>>>
>>>> public static void updateCoverArt(String coverArtURLStr)
>>>> {
>>>> String coverArtURL = coverArtURLStr;
>>>>
>>>
>>> Why the extra 'String' assignment?
>>>
>>> What is the *actual* value of 'coverArtURLStr' at this point when you
>>> have the problem?
>>>
>>>> Drawable d;
>>>>
>>>> if (coverArtURL.equals(""))
>>>> d = Data.defaultCoverArt;
>>>> else
>>>> d = Drawable.createFromPath(coverArtURL);
>>>>
>>>
>>> The value of 'd' at this point when you have the problem is 'null',
>>> you say.
>>>
>>>> Data.coverArtIV.setImageDrawable(d);
>>>> }
>>>>
>>>
>>> When you say "I can access the LAN OK", that may or may not bear on
>>> whether your program can access the LAN when you're running your
>>> test. There's insufficient information in your post for us to know.
>>>
>>> Since you have not provided an SSCCE there's little likelihood we can
>>> debug your problem. On the face of it the'createFromPath()' method is
>>> unable to access the actual URL string you're giving it, a datum you
>>> have omitted from your problem statement.
>>>
>>> Provide an SSCCE, please.
>
>> Actually, there is enough information.
>
> Now that you've shared it, sure, but not before in the post in which I
> pointed out you didn't provide enough information.
>
>> It seems that
>> Drawable.createFromPath(coverArtURL);
>>
>> doesn't like it if the path is http:\\...
>
> That information was *not* in your post, so no, there was *not* enough
> information in your post. I am happy that we found the correct answer
> despite that. It is strange that you're claiming to have provided enough
> information by citing data that you did not provide us.

Because at the time I did not know it was relevent

> Yes, of course it can't parse a URL string of that form. Had you

"Of course"? Why is it so obvious?

> included that datum in the original post we could have answered with
> complete certainty instead of probabilistically (and, as it turned out,
> correctly). We'd have seen that you used backslashes in the URL string,
> and been able to focus right in on that for you.

I do not think that's the problem

> At least we were able to focus on the string itself and the likelihood
> (now certainty) that it specified an unreachable (or outright invalid)
> location, based on the information that was available.
>
>> I've just got it to work.
>> I'll post the code tomorrow for reference
>
> Thanks. That's a good thing.
>

  public static void updateCoverArt(String coverArtURLStr)
     {
     	
     	int height=Constants.ART_HEIGHT, width=Constants.ART_WIDTH;
     	Drawable d;
     	ImageView iv = Data.coverArtIV;
         URL url = null;

         if (coverArtURLStr.equals(""))
         {
         	d = Data.defaultCoverArt;
         }
         else
         {
         	try
         	{
         		url = new URL(coverArtURLStr);
         	} catch (MalformedURLException e) {e.printStackTrace();}
		
         	InputStream content = null;
         	try
         	{
         		content = (InputStream)url.getContent();
         	} catch (IOException e) {e.printStackTrace();}
		
         	d = Drawable.createFromStream(content , "src");
         }
         iv.setImageDrawable(d);
         iv.setAdjustViewBounds(true);
         iv.setMaxHeight(height);
         iv.setMinimumHeight(height);
         iv.setMaxWidth(width);
         iv.setMinimumWidth(width);

     }
-- 
Dirk

http://www.neopax.com/technomage/ - My new book - Magick and Technology