Don't know if you have got an answer, but if you haven't try this:
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import com.android.volley.AuthFailureError;
import com.android.volley.NetworkResponse;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyLog;
public class MultipartRequest extends Request<String> {
// private MultipartEntity entity = new MultipartEntity();
MultipartEntityBuilder entity = MultipartEntityBuilder.create();
HttpEntity httpentity;
private static final String FILE_PART_NAME = "file";
private final Response.Listener<String> mListener;
private final File mFilePart;
private final Map<String, String> mStringPart;
public MultipartRequest(String url, Response.ErrorListener errorListener,
Response.Listener<String> listener, File file,
Map<String, String> mStringPart) {
super(Method.POST, url, errorListener);
mListener = listener;
mFilePart = file;
this.mStringPart = mStringPart;
entity.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
buildMultipartEntity();
}
public void addStringBody(String param, String value) {
mStringPart.put(param, value);
}
private void buildMultipartEntity() {
entity.addPart(FILE_PART_NAME, new FileBody(mFilePart));
for (Map.Entry<String, String> entry : mStringPart.entrySet()) {
entity.addTextBody(entry.getKey(), entry.getValue());
}
}
@Override
public String getBodyContentType() {
return httpentity.getContentType().getValue();
}
@Override
public byte[] getBody() throws AuthFailureError {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
httpentity = entity.build();
httpentity.writeTo(bos);
} catch (IOException e) {
VolleyLog.e("IOException writing to ByteArrayOutputStream");
}
return bos.toByteArray();
}
@Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
return Response.success("Uploaded", getCacheEntry());
}
@Override
protected void deliverResponse(String response) {
mListener.onResponse(response);
}
}
In order to make it work you must use this java httpclients:
http://hc.apache.org/downloads.cgi
By the time I'm writing this answer (02/07/14) the version I'm using is 4.3.2.
Hope it helps !