title: Android - Write byte array to OutputStreamWriter
body: <p>I have an application that uploads photos through a web service.  In the past, I loaded a file into a stream, and converted to Base64.  Then I posted the resulting string through the write() method of an OutputStreamWriter.  Now, the web service has changed, and it expects multipart/form-data and it does not expect Base64.  </p>
  
  <p>So somehow I need to post the chararters of this file as is without conversion.  I'm sure I'm close, but all I ever get is a content lengh underflow or overflow.  The odd thing is that in the debugger I can see that my buffer length is the same length as the string I'm posting.  Here's what I'm doing and hopefully enough code:</p>
  
  <pre><code>// conn is my connection
  OutputStreamWriter dataStream = new OutputStreamWriter(conn.getOutputStream());
  
  // c is my file
  int bytesRead = 0;
  long bytesAvailable = c.length();
  
  while (bytesAvailable &gt; 0) {
     byte[] buffer = new byte[Math.min(12288, (int)bytesAvailable)];
     bytesRead = fileInputStream.read(buffer, 0, Math.min(12288, (int)bytesAvailable));
  
     // assign the string if needed.
     if (bytesRead &gt; 0) {
        bytesAvailable = fileInputStream.available();
  
        // I've tried many encoding types here.
        String sTmp = new String(buffer, "ISO-8859-1");
        // HERE'S the issue.  I can't just write the buffer,
        dataStream.write(sTmp);
        dataStream.flush();
  // Yes there's more code, but this should be enough to show why I don't know what I'm doing!
  </code></pre>