Android Open Source - ArduinoRGBLighting Device Connector

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From Project

Back to project page ArduinoRGBLighting.

License

The source code is released under:

Apache License

Java Source Code

package com.dannixon.rgblighting;
//w w  w . j a v a2s  .c  o m
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

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

public class DeviceConnector extends AsyncTask<Boolean, Void, String>{
  private UIManager uiMan;
  private String serviceURI;
  
  DeviceConnector(String serviceURI, UIManager uiMan) {
    this.uiMan = uiMan;
    this.serviceURI = serviceURI;
  }
  
  @Override
  protected String doInBackground(Boolean... params) {
    Integer redLevel = uiMan.getRed();
    Integer greenLevel = uiMan.getGreen();
    Integer blueLevel = uiMan.getBlue();
    Integer trans = uiMan.getTransition();
    Integer time = uiMan.getTime();
    if(!params[0]) trans = -1;
    Log.d("LightRequest", String.format("R:%d, G:%d, B:%d, Trans:%d, Time:%d", redLevel, greenLevel, blueLevel, trans, time));
    try {
      HttpClient httpclient = new DefaultHttpClient();
      HttpPost httppost = new HttpPost(serviceURI);
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("r", redLevel.toString()));
        nameValuePairs.add(new BasicNameValuePair("g", greenLevel.toString()));
        nameValuePairs.add(new BasicNameValuePair("b", blueLevel.toString()));
        nameValuePairs.add(new BasicNameValuePair("trans", trans.toString()));
        nameValuePairs.add(new BasicNameValuePair("time", time.toString()));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            StringBuilder sb = new StringBuilder();
        String line;
        BufferedReader reader = new BufferedReader(new InputStreamReader(instream, "UTF-8"));
        while ((line = reader.readLine()) != null) {
          sb.append(line).append("\n");
        }
        String result = sb.toString();
            return result;
        }
    } catch (ClientProtocolException e) {
        Log.e(e.getClass().toString(), e.getMessage());
    } catch (IOException e) {
      Log.e(e.getClass().toString(), e.getMessage());
    } catch (IllegalArgumentException e) {
      Log.e(e.getClass().toString(), e.getMessage());
    } catch (Exception e) {
      Log.e(e.getClass().toString(), e.getMessage());
    }
    return "null";
  }

  @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        Log.d("XMLResult", result);
      try {
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
      DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
      InputStream xmlData = new ByteArrayInputStream(result.getBytes());
      Document xmlDoc = dBuilder.parse(xmlData);;
      int redLevel = Integer.parseInt(xmlDoc.getElementsByTagName("r").item(0).getTextContent());
      int greenLevel = Integer.parseInt(xmlDoc.getElementsByTagName("g").item(0).getTextContent());
      int blueLevel = Integer.parseInt(xmlDoc.getElementsByTagName("b").item(0).getTextContent());
      int transition = Integer.parseInt(xmlDoc.getElementsByTagName("lastTransition").item(0).getTextContent());
      Integer time = Integer.parseInt(xmlDoc.getElementsByTagName("lastTime").item(0).getTextContent());
      uiMan.setRGB(redLevel, greenLevel, blueLevel);
      uiMan.setTime(time);
      uiMan.setTransition(transition);
    } catch (ParserConfigurationException e) {
      Log.e(e.getClass().toString(), e.getMessage());
    } catch (SAXException e) {
      Log.e(e.getClass().toString(), e.getMessage());
    } catch (IOException e) {
      Log.e(e.getClass().toString(), e.getMessage());
    }
      
    }
  
}

Java Source Code List

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