Upload pictures to the server.

You have already asked so many questions here that it seems to me that you could already figure everything out.

  /** * Asynchronous task to upload file to server */ class UploadImageTask extends AsyncTask<File, Integer, Boolean> { /** Upload file to this url */ private static final String UPLOAD_URL = "http://thibault-laptop:8080/report"; /** Send the file with this form name */ private static final String FIELD_FILE = "file"; private static final String FIELD_LATITUDE = "latitude"; private static final String FIELD_LONGITUDE = "longitude"; /** * Prepare activity before upload */ @Override protected void onPreExecute() { super.onPreExecute(); setProgressBarIndeterminateVisibility(true); mConfirm.setEnabled(false); mCancel.setEnabled(false); showDialog(UPLOAD_PROGRESS_DIALOG); } /** * Clean app state after upload is completed */ @Override protected void onPostExecute(Boolean result) { super.onPostExecute(result); setProgressBarIndeterminateVisibility(false); mConfirm.setEnabled(true); mDialog.dismiss(); if (result) { showDialog(UPLOAD_SUCCESS_DIALOG); } else { showDialog(UPLOAD_ERROR_DIALOG); } } @Override protected Boolean doInBackground(File... image) { return doFileUpload(image[0], UPLOAD_URL); } @Override protected void onProgressUpdate(Integer... values) { super.onProgressUpdate(values); if (values[0] == 0) { mDialog.setTitle(getString(R.string.progress_dialog_title_uploading)); } mDialog.setProgress(values[0]); } /** * Upload given file to given url, using raw socket * @see https://stackoverflow.com/questions/4966910/androidhow-to-upload-mp3-file-to-http-server * * @param file The file to upload * @param uploadUrl The uri the file is to be uploaded * * @return boolean true is the upload succeeded */ private boolean doFileUpload(File file, String uploadUrl) { HttpURLConnection conn = null; DataOutputStream dos = null; String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary = "*****"; String separator = twoHyphens + boundary + lineEnd; int bytesRead, bytesAvailable, bufferSize; byte[] buffer; int maxBufferSize = 1 * 1024 * 1024; int sentBytes = 0; long fileSize = file.length(); // The definitive url is of the kind: // http://host/report/latitude,longitude uploadUrl += "/" + mLocation.getLatitude() + "," + mLocation.getLongitude(); // Send request try { // Configure connection URL url = new URL(uploadUrl); conn = (HttpURLConnection) url.openConnection(); conn.setDoInput(true); conn.setDoOutput(true); conn.setUseCaches(false); conn.setRequestMethod("PUT"); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); publishProgress(0); dos = new DataOutputStream(conn.getOutputStream()); // Send location params writeFormField(dos, separator, FIELD_LATITUDE, "" + mLocation.getLatitude()); writeFormField(dos, separator, FIELD_LONGITUDE, "" + mLocation.getLongitude()); // Send multipart headers dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"" + FIELD_FILE + "\";filename=\"" + file.getName() + "\"" + lineEnd); dos.writeBytes(lineEnd); // Read file and create buffer FileInputStream fileInputStream = new FileInputStream(file); bytesAvailable = fileInputStream.available(); bufferSize = Math.min(bytesAvailable, maxBufferSize); buffer = new byte[bufferSize]; // Send file data bytesRead = fileInputStream.read(buffer, 0, bufferSize); while (bytesRead > 0) { // Write buffer to socket dos.write(buffer, 0, bufferSize); // Update progress dialog sentBytes += bufferSize; publishProgress((int)(sentBytes * 100 / fileSize)); bytesAvailable = fileInputStream.available(); bufferSize = Math.min(bytesAvailable, maxBufferSize); bytesRead = fileInputStream.read(buffer, 0, bufferSize); } // send multipart form data necesssary after file data dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); dos.flush(); dos.close(); fileInputStream.close(); } catch (IOException ioe) { Log.e(TAG, "Cannot upload file: " + ioe.getMessage(), ioe); return false; } // Read response try { int responseCode = conn.getResponseCode(); return responseCode == 200; } catch (IOException ioex) { Log.e(TAG, "Upload file failed: " + ioex.getMessage(), ioex); return false; } catch (Exception e) { Log.e(TAG, "Upload file failed: " + e.getMessage(), e); return false; } } private void writeFormField(DataOutputStream dos, String separator, String fieldName, String fieldValue) throws IOException { dos.writeBytes(separator); dos.writeBytes("Content-Disposition: form-data; name=\"" + fieldName + "\"\r\n"); dos.writeBytes("\r\n"); dos.writeBytes(fieldValue); dos.writeBytes("\r\n"); } }