com.strathclyde.highlightingkeyboard.HttpPostAsyncTask.java Source code

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Here is the source code for com.strathclyde.highlightingkeyboard.HttpPostAsyncTask.java

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/******************************************************************************
 * Copyright 2016 University of Strathclyde   
 * All rights reserved. This program and the accompanying materials   
 * are made available under the terms of the Eclipse Public License v1.0  
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
    
 *           
 * Contributors: 
 * Andreas Komninos, University of Strathclyde - code implementation
 * http://www.komninos.info
 * http://mobiquitous.cis.strath.ac.uk
 *****************************************************************************/
package com.strathclyde.highlightingkeyboard;

import java.io.File;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast;

/**
 * An asynchronous task for posting logged data to a web server
 * @author ako2
 *
 */
public class HttpPostAsyncTask extends AsyncTask<String, Void, Boolean> {

    Context c;
    String uploadFilePath;
    DBmanager dbm;
    File file;
    boolean insert;

    /**
     * Creates the asynchronous task for uploading data
     * @param dbm the database from which to upload
     * @param insert set to true for posting to a service that inserts the data to a remote MySQL database, or false for simply sending the database as a .db file
     * @param con the application context
     */
    public HttpPostAsyncTask(DBmanager dbm, boolean insert, Context con) {
        this.dbm = dbm;
        this.insert = insert;
        this.c = con;
    }

    /**
     * perform the data upload via HTTP POST
     */
    @Override
    protected Boolean doInBackground(String... params) {
        String filePath = params[0];

        //Log.i("AsyncTask", "received file to upload "+filePath);

        String url;
        if (insert)
            url = "http://150.140.15.50/oats/receivedb.php";
        else
            url = "http://150.140.15.50/oats/receivedb_no_insert.php";
        file = new File(filePath);
        try {

            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(url);
            HttpEntity httpEntity = MultipartEntityBuilder.create()
                    .addBinaryBody("file", file, ContentType.create("application/octet-stream"), file.getName())
                    .build();

            post.setEntity(httpEntity);
            HttpResponse response = client.execute(post);

            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                //Log.i("AsyncTask", "Upload OK"+filePath);
                String responseString = EntityUtils.toString(response.getEntity());
                //Log.i("AsyncTask", responseString);
                if (responseString.contains("Done")) {
                    return true;
                }
            } else {
                //Log.i("AsyncTask", "Upload failed: "+response.getStatusLine().getStatusCode());
                //Log.i("AsyncTask", "Upload failed: "+EntityUtils.toString(response.getEntity()));
                //Toast.makeText(c, "Upload failed: "+response.getStatusLine().getStatusCode()+ " db saved locally to "+filePath, Toast.LENGTH_SHORT).show();
                return false;
            }

        } catch (Exception e) {
            // show error
            e.printStackTrace();
            return false;
        }

        return false;

    }

    @Override
    protected void onPostExecute(Boolean inserted) {
        try {
            if (inserted) {
                Log.i("AsyncTask", "Upload complete, truncating DB");
                dbm.open();
                dbm.truncate();
                dbm.close();
                //Toast.makeText(c, "Upload OK", Toast.LENGTH_SHORT).show();
                file.delete();
            } else {
                //Log.i("AsyncTask", "Upload not complete, truncating DB");
                dbm.open();
                dbm.truncate();
                dbm.close();
                //Toast.makeText(c, "Upload failed, db saved locally to "+file.getPath(), Toast.LENGTH_SHORT).show();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}