CODEWITHSUNDEEP
javaandroidbitmapbyteinputstream
Romain Piel
Romain Piel

Reputation: 11177

BitmapFactory.decodeStream(inputStream) always return null when some bytes are wrong

I'm building an android app and I'm currently having trouble retrieving a bitmap from an URL. Here is the code I'm using :

public static Bitmap bmpFromURL(URL imageURL){

    Bitmap result = null;

    try {

        HttpURLConnection connection = (HttpURLConnection)imageURL .openConnection();

        connection.setDoInput(true);

        connection.connect();

        InputStream input = connection.getInputStream();

        result = BitmapFactory.decodeStream(input);


    } catch (IOException e) {


        e.printStackTrace();

    }

    return result;

}

Everything works fine when the picture's write but when some bytes are wrong, result gets null. I think it's basically expectable as it's written this in the doc of BitmapFactory.decodeStream :

If the input stream is null, or cannot be used to decode a bitmap, the function returns null. The stream's position will be where ever it was after the encoded data was read.

The problem is, my wrong picture is well interpreted by my web browser and I can do so on iPhone platform.

Is there a way to sort of ignore those wrong pixels? maybe with the option parameter?

Any help appreciated

Romain

Upvotes: 3

Views: 3230

Answers (2)

Kunila
Kunila

Reputation: 25

Try this one out..It worked for me. hope it helps.

result = BitmapFactory.decodeStream(new PatchInputStream(input));

public class PatchInputStream extends FilterInputStream {
   public PatchInputStream(InputStream input) {
       super(input);
   }
   public long skip(long n) throws IOException {
       long m = 0L;
       while (m < n) {
           long _m = in.skip(n-m);
           if (_m == 0L) break;
           m += _m;
       }
       return m;
   }
}

Upvotes: 1

Romain Guy
Romain Guy

Reputation: 98501

This is a known bug fixed in a future version of Android. You can work around it by first copying the content of the InputStream into a byte[] array and then decoding the byte array itself.

Upvotes: 5

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