com.joefernandez.irrduino.android.remote.HttpCommandTask.java Source code

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Here is the source code for com.joefernandez.irrduino.android.remote.HttpCommandTask.java

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/*
 * Copyright 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.joefernandez.irrduino.android.remote;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import org.apache.http.util.ByteArrayBuffer;

import android.os.AsyncTask;
import android.util.Log;

/** Async Task code (for Generic HTML requests) 
 * extend this class and add an onPostExecute() method
 * to receive and process the returned string.
 *        
 * <pre>
 * protected void onPostExecute(String result) {
 *     // do something with the result
 * }
 * </pre>
 */
public class HttpCommandTask extends AsyncTask<String, Void, String> {

    private static final String TAG = "HttpCommandTask";

    /** The system calls this to perform work in a worker thread and
      * delivers it the parameters given to AsyncTask.execute() */
    protected String doInBackground(String... urls) {
        try {
            URL commandURL = new URL(urls[0]);
            URLConnection conn = commandURL.openConnection();
            InputStream is = conn.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);
            ByteArrayBuffer baf = new ByteArrayBuffer(50);

            int current = 0;
            while ((current = bis.read()) != -1) {
                baf.append((byte) current);
            }

            /* Convert the Bytes read to a String. */
            return new String(baf.toByteArray());

        } catch (Exception e) {
            Log.d(TAG, "http request exception for: " + urls[0]);
            Log.d(TAG, "    Exception: " + e.getMessage());
        }
        return null;

    }

}