shiami shiami - 5 months ago 173
Android Question

BitmapFactory.decodeStream always returns null and skia decoder shows decode returned false

test image here:
http://images.plurk.com/tn_4134189_bf54fe8e270ce41240d534b5133884ee.gif

I've tried several solutions found on the internet but there is no working solution.

I'm using the following snippet code:

Url imageUrl = new Url("http://images.plurk.com/tn_4134189_bf54fe8e270ce41240d534b5133884ee.gif");
Bitmap image = BitmapFactory.decodeStream(imageUrl.openStream());


Always getting this log:

DEBUG/skia(1441): --- decoder->decode returned false


Any help?
Thanks.

EDIT:

Those images failed to be decoded are also can not be shown on a
WebView
. But can see if open in a Browser.

Answer

Try this as a temporary workaround:

First add the following class:

  public static class PlurkInputStream extends FilterInputStream {

    protected PlurkInputStream(InputStream in) {
        super(in);
    }

    @Override
    public int read(byte[] buffer, int offset, int count)
        throws IOException {
        int ret = super.read(buffer, offset, count);
        for ( int i = 2; i < buffer.length; i++ ) {
            if ( buffer[i - 2] == 0x2c && buffer[i - 1] == 0x05
                && buffer[i] == 0 ) {
                buffer[i - 1] = 0;
            }
        }
        return ret;
    }

}

Then wrap your original stream with PlurkInputStream:

Bitmap bitmap = BitmapFactory.decodeStream(new PlurkInputStream(originalInputStream));

Let me know if this helps you.

EDIT:

Sorry please try the following version instead:

        for ( int i = 6; i < buffer.length - 4; i++ ) {
            if ( buffer[i] == 0x2c ) {
                if ( buffer[i + 2] == 0 && buffer[i + 1] > 0
                    && buffer[i + 1] <= 48 ) {
                    buffer[i + 1] = 0;
                }
                if ( buffer[i + 4] == 0 && buffer[i + 3] > 0
                    && buffer[i + 3] <= 48 ) {
                    buffer[i + 3] = 0;
                }
            }
        }

Note that this is not efficient code nor is this a full/correct solution. It will work for most cases, but not all.