gistfile1.txt

import java.io.BufferedInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import android.graphics.Bitmap;

public class MultipartUploader {

	private final static String LINE_END = "\r\n";

	private final static String TWO_HYPENS = "--";

	private final static String BOUNDARY = "*****";

	private HttpURLConnection connection = null;

	private DataOutputStream outputStream = null;

	private List<String> cookies = new ArrayList<String>();

	public void start(String urlServer) throws IOException {
		URL url = new URL(urlServer);
		connection = (HttpURLConnection) url.openConnection();
		connection.setDoInput(true);
		connection.setDoOutput(true);
		connection.setUseCaches(false);
		connection.setRequestMethod("POST");
		connection.setRequestProperty("Connection", "Keep-Alive");
		connection.setRequestProperty("Content-Type",
				"multipart/form-data;boundary=" + BOUNDARY);
		for (String cookie : cookies)
			connection.addRequestProperty("Cookie", cookie.split(";", 2)[0]);
		outputStream = new DataOutputStream(connection.getOutputStream());
	}

	public String finish() throws IOException {
		outputStream.flush();
		outputStream.close();
		cookies = connection.getHeaderFields().get("Set-Cookie");
		InputStream in = new BufferedInputStream(connection.getInputStream());
		return StreamUtils.toString(in);
	}

	public void bitmap(String name, Bitmap bitmap) throws IOException {
		outputStream.writeBytes(TWO_HYPENS + BOUNDARY + LINE_END);
		outputStream
				.writeBytes("Content-Disposition: attachment; name=\"userfile\";filename=\""
						+ name + "\"");
		outputStream.writeBytes(LINE_END + LINE_END);
		bitmap.compress(Bitmap.CompressFormat.JPEG, 90, outputStream);
		outputStream.writeBytes(LINE_END);
		outputStream.writeBytes(TWO_HYPENS + BOUNDARY + TWO_HYPENS + LINE_END);
	}

	public void string(String name, String value) throws IOException {
		outputStream.writeBytes(TWO_HYPENS + BOUNDARY + LINE_END);
		outputStream.writeBytes("Content-Disposition: form-data; name=\""
				+ name + "\"" + LINE_END + LINE_END);
		outputStream.writeBytes(value + LINE_END);
		outputStream.writeBytes(TWO_HYPENS + BOUNDARY + LINE_END);
	}

}