image via GPRS

[je_alipio]

hi guys!

id just like to ask who knows how to send an image from a server servlet to a midlet?

thanks guys!

[shmoove]

You don't really need a servlet for this. Just put the image on teh web somewhere, and go to that address from your MIDlet, read all the data and use Image.createImage(byte[] imageData, int imageOffset, int imageLength) with the data you downloaded.

shmoove

[pzn]

Can that be done with midp 1.0 or does it require 2.0?

[shmoove]

MIDP 1.0 will do. The data comes into the stream as an array of bytes and you use that array in the createImage() method:

  /*-----------------------------------------------------------------
  * Open an http connection and download a png file
  * into a byte array.
  *-----------------------------------------------------------------*/
  private Image getImage(String url) throws IOException
  {
    ContentConnection connection = (ContentConnection) Connector.open(url);
    DataInputStream iStrm = connection.openDataInputStream();

    Image im = null;

    try
    {
      // ContentConnection includes a length method
      byte imageData[];
      length = (int) connection.getLength();
      if (length != -1)
      {
        imageData = new byte[length];

        // Read the png into an array
        iStrm.readFully(imageData);
      }
      else  // Length not available...
      {
        ByteArrayOutputStream bStrm = new ByteArrayOutputStream();

        int ch;
        while ((ch = iStrm.read()) != -1)
          bStrm.write(ch);

        imageData = bStrm.toByteArray();
        bStrm.close();
      }

      // Create the image from the byte array
      im = Image.createImage(imageData, 0, imageData.length);
    }
    finally
    {
      // Clean up
      if (iStrm != null)
        iStrm.close();
      if (connection != null)
        connection.close();
    }
    return (im == null ? null : im);
  }

shmoove

[je_alipio]

i havent tried it yet, but thanks..ill try it now..thanks for your time man!

[trickybit]

thanks much for the nice code example, shmoove. I somehow have missed readFully() in the past. d'uh.

I don't want to pick code nits, but I was curious about your return statement. In this case, that's just the same as "return im;" right?

jim

[shmoove]

Looks like you're write.
And I don't want to take credit for something I didn't do. This code isn't a shmoove original, I downloaded it from the web (I don't remember exactly where).