Mark and Justin, thanks for all of your help. Finally got everything
to work, for anyone who runs into these problems in the future:
1) I took Mark's advice and used the HttpClient to retrieve the image,
but still it was producing inconsistent results. Finally, instead of
using BitmapFactory.decodeStream(), I tried
BitmapFactory.decodeByteArray(), and that seems to work perfectly.
Final code:
public static Bitmap retrieveImageFromURL(String urlString) throws
Exception
{
Logger.log("Getting URL string "+urlString);
Bitmap bm = null;
HttpClient hc = new HttpClient();
GetMethod gm = new GetMethod(urlString);
Logger.log("Executing get request");
hc.executeMethod(gm);
Logger.log("Decoding response");
bm = BitmapFactory.decodeByteArray(gm.getResponseBody(), 0,
gm.getResponseBody().length);
return bm;
}
2) Justin, you were correct about the openFileInput. This one, I had
to use BitmapFactory.decodeStream(), but it seems to work for internal
files. Final code:
public Bitmap retrieveFile ()
{
return
BitmapFactory.decodeStream(context.openFileInput("a.png"));
}
Thanks for all your help!
On Aug 16, 9:45 am, "Justin (Google Employee)" <[EMAIL PROTECTED]>
wrote:
> > I think
> > this should actually cause a problem
>
> Sorry, I meant to say I think this should actually *not* cause a
> problem.
>
> Cheers,
> Justin
> Android Team @ Google
>
> On Aug 15, 5:03 pm, "Justin (Google Employee)" <[EMAIL PROTECTED]>
> wrote:
>
> > > The first problem I'm having is that the following code works 50% of
> > > the time:
>
> > You seem to be doing something odd here. Why are you creating a
> > BufferedInputStream from your URLConnection object and then handing
> > the input stream from url.openStream() to the BitmapFactory? I think
> > this should actually cause a problem, but all you really need to do
> > here is
>
> > URL url = new URL(urlString);
> > Bitmap bm = BitmapFactory.decodeString(url.openStream());
>
> > With your file issue, try using
> > BitmapFactory.decodeFile(context.openFileInput("a.png")) . My guess
> > would be that BitmapFactory wants an absolute path name, and "a.png"
> > is a relative one. The context.openFileInput call expects a relative
> > path.
>
> > Cheers,
> > Justin
> > Android Team @ Google
>
> > On Aug 14, 6:06 pm,kingkung<[EMAIL PROTECTED]> wrote:
>
> > > I'm having infinite trouble storing/retrieving images.
>
> > > The first problem I'm having is that the following code works 50% of
> > > the time:
>
> > > public static Bitmap retrieveImageFromURL(String urlString) throws
> > > Exception
> > > {
> > > URL url = new URL(urlString);
> > > URLConnection conn = url.openConnection();
> > > conn.connect();
> > > BufferedInputStream bis = new
> > > BufferedInputStream(conn.getInputStream());
> > > Bitmap bm = BitmapFactory.decodeStream(url.openStream());
> > > if (bm==null) Logger.log("!!!!!DAMMIT");
> > > return bm;
> > > }
>
> > > I receive the DAMMIT many times when the pictures are anywhere over
> > > 100x100 px. But it does work sometimes, so I know my code is
> > > correct. Is there a reason for this? I understand that it should
> > > take a long time, but it shouldn't crash.
>
> > > The second problem I have is the following code, which should save/
> > > retrieve a file. Save *seems* to work (returns true), but everytime I
> > > try to retrieve it, it returns null:
>
> > > //Store the file -- returns true everytime.
> > > public boolean storeFile(Bitmap b)
> > > {
> > > fOut =
> > > context.openFileOutput("a.png",Context.MODE_PRIVATE);
> > > return b.compress(Bitmap.CompressFormat.PNG, 100, fOut);
> > > }
>
> > > //Retrieve the file -- returns null everytime
> > > public Bitmap retrieveFile ()
> > > {
> > > return BitmapFactory.decodeFile("a.png");
> > > }
>
> > > This is simple code. Is there something seriously wrong with the
> > > android SDK with regards to files?
>
>
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