Question

I need to send image from android app to java app. Basically, I need a byte array from the image to send to rf module which transmits.Another rf module receives and sends the byte array to java app which must make the image .

Android code:

FileInputStream fis = new FileInputStream(myFile);
    byte[] b=new byte[(int)myFile.length()];        
    fis.read(b);server.send(b);

Java code:

FileOutputStream fwrite = new FileOutputStream(new File("my_xml"),true);
                                fwrite.write(bb);//bb is a byte from rf using input stream as soon as a byte comes it is read to file. This is necessary for some other reasons
                                fwrite.flush();
                                fwrite.close();

After getting full file:

FileInputStream fir=new FileInputStream("my_xml");
        final BufferedImage bufferedImage = ImageIO.read(fir);
        ImageIO.write(bufferedImage, "bmp", new File("image.bmp"));
        fir.close();

I am getting error javax.imageio.IIOException: Bogus Huffman table definition
The rf is working fine because text file is being sent perfectly.Please help.Even without ImageIo code is not giving image even after changing extension to jpeg

Answer 1

The error means that the image file cant be read because the format is wrong.That is some bytes are missing or wrong or out of proper position and therefore file cant be decoded. My rf transfer does not have protocols like tcp/ip therefore some bytes are lost due to error in communication channel and hence the error.