Adding multiple images to a PDF document with itext in android

Question

I am developing an android application in which i want to add multiple high resolution images to the pdf file with itext jar. I am getting an out of memory exception. When I set the smaller values for width and height it works fine. This is implemented inside a async background task class. The source code is as follows

fos = new FileOutputStream(pdfFilePath);
        //Rectangle pagesize = new Rectangle(595.44f, 841.68f);
        document = new Document(PageSize.A4, 0f, 0f, 0f, 0f);
        PdfWriter.getInstance(document,new FileOutputStream(pdfFilePath));

        fileArray  = imageDirectory.listFiles();
        Log.d("Files", "Size: "+ fileArray.length);
        for (i=0; i < fileArray.length; i++){
            document.open();
            bMap= BitmapFactory.decodeFile(fileArray[i].getPath(), null);
            bMap = Bitmap.createScaledBitmap(bMap, 2339, 1654, false);
            matrix = new Matrix();
            matrix.postRotate(90);
            bMap = Bitmap.createBitmap(bMap, 0, 0, bMap.getWidth(), bMap.getHeight(), matrix, false);
            bMap = toGrayscale(bMap);
            stream = new ByteArrayOutputStream();
            bMap.compress(Bitmap.CompressFormat.JPEG, 25, stream);
            byteArray = stream.toByteArray();
            document.add(Image.getInstance(byteArray));
            Log.e("Files", "FileName:" + fileArray[i].getName());

            bMap = null;
            matrix = null;
            byteArray = null;
            stream = null;
            document.close();
        } 

        fos.close();

Answer 1

See: Managing Bitmap Memory .

You probably want to call bMap.recycle() before setting it to null .