I want to upload an image to my server. Therfore i've build this and sending to the server works quite well. Yet one thing is missing, which is ProgressDialog.
I tried a lot of ways but don't know how to do it the right way.
I call ImageUploader.uploadFile() in an AsyncTask in the preExecute method at the moment.
As within the doInBackground i have to send an E-mail which has the photo as attachment with it. So the photo needs to be uploaded before it's attached to the email.
So how to do this and how to show the ProgressDialog?
This is how I Call the function:
@Override
protected void onPreExecute(){
super.onPreExecute();
if(isPhotoTaken()){
ImageUploader.uploadFile(getPhotoPath(), "http://www.example.com/upload.php", Step4.this);
}
}
This is my ImageUploader class
public class ImageUploader {
private static String serverResponseMessage = "";
private static int serverResponseCode = 0;
private static ProgressDialog dialog;
public static int uploadFile(final String sourceFileUri, final String serverFile, final Context context) {
Debug.out("SourceFileUri: " + sourceFileUri);
Debug.out("ServerFile: " + serverFile);
Thread thread = new Thread() {
@Override
public void run() {
((Activity) context).runOnUiThread(new Runnable() {
@Override
public void run() {
dialog = new ProgressDialog(context);
dialog.setCancelable(false);
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setMessage("Uploading Image... Please wait!");
dialog.show();
}
});
String upLoadServerUri = serverFile;
String fileName = sourceFileUri;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File Does not exist");
}
try { // open a URL connection to the Servlet
Debug.out("in the try");
FileInputStream fileInputStream = new FileInputStream(
sourceFile);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection(); // Open a
// HTTP
// connection
// to
// the
// URL
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
Debug.out("Set Properties and Datastream");
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
Debug.out("Writes data");
bytesAvailable = fileInputStream.available(); // create a
// buffer of
// maximum
// size
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
Debug.out("Buffer done");
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
Debug.out("Read Bytes");
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
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);
Debug.out("After sendData");
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
serverResponseMessage = conn.getResponseMessage();
Debug.out("Server Response: " + serverResponseCode);
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
Debug.out("HTTP Response is : " + serverResponseMessage
+ ": " + serverResponseCode);
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
}
catch (MalformedURLException ex) {
ex.printStackTrace();
// Toast.makeText(UploadImageDemo.this,
// "MalformedURLException", Toast.LENGTH_SHORT).show();
Log.e("Upload file to server", "error: " + ex.getMessage(),
ex);
} catch (Exception e) {
e.printStackTrace();
// Toast.makeText(UploadImageDemo.this, "Exception : " +
// e.getMessage(), Toast.LENGTH_SHORT).show();
Log.e("Upload file to server Exception",
"Exception : " + e.getMessage(), e);
}
}
};
thread.start();
try {
thread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Debug.out("Message: " + serverResponseMessage.toString());
return serverResponseCode;
}
}
