Android Open Source - ArduinoRGB-Controller Arduino Socket

From Project

Back to project page ArduinoRGB-Controller.

License

The source code is released under:

MIT License

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Java Source Code

package dk.cmol.arduinorgb_controller;
// w w w .j a  va 2s .  c  om
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Socket;

import android.content.SharedPreferences;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.preference.PreferenceManager;
import android.util.Log;
import android.widget.Toast;

public class ArduinoSocket extends Thread{
  
  private ArduinoRGBActivity parent = null;
  private Socket sock = null;
  private OutputStream stream = null;
  private String ip = null;
  private int port;
  private Handler mHandler;
  private int timeout = 1000;
  private boolean connected;
  
  public ArduinoSocket(ArduinoRGBActivity parent) {
    this.parent = parent;
  }
  
  public void run() {
    
    Looper.prepare();
    connect();

        mHandler = new Handler() {
                public void handleMessage(Message msg) {
                    try {
                      if (stream != null) {
                        stream.write((byte[]) msg.obj);
                stream.write((byte) 10);
                Log.i("ArduinoSocket", "Data written...");
            }
                      else {
              throw new IOException("Sorry, phone not connected :-(\nPlase check your settings!");
            }
          } catch (IOException e) {
            Toast toast = Toast.makeText(parent.getApplicationContext(), e.getMessage(), Toast.LENGTH_SHORT);
            toast.show();
          }
                }
        };
        Looper.loop();
  }
  
  public void writeMessage(final byte[] message) {
    if (connected) {
      Message msg = Message.obtain();
      msg.obj = message;
      mHandler.sendMessage(msg);
    } else {
      Log.w("ArduinoSocket", "Trying to send data without connection");
      Toast toast = Toast.makeText(parent.getApplicationContext(), "Sorry, phone not connected :-(\nPlase check your settings!", Toast.LENGTH_SHORT);
      toast.show();
    }
  }
  
  private void connect() {
    getPreferences();
    try {
      sock = new Socket();
      sock.connect(new InetSocketAddress(ip, port), timeout);
      stream = sock.getOutputStream();
      
      if(sock == null) {
        throw new IOException();
      }
      connected = true;
    } catch (IOException e) {
      //e.printStackTrace();
      Log.w("ArduinoSocket", "Unable to connect");
      Toast toast = Toast.makeText(parent.getApplicationContext(), "Failed to connect :-(\nPlase check your settings!", Toast.LENGTH_LONG);
      toast.show();
      connected = false;
    }
  }
  
  private void getPreferences() {
    // Read settings from settings manager
    Log.i("ArduinoSocket", "Setting IP and PORT");
    SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(parent);
    try {
      ip = sharedPref.getString("server_addr", "");
      port = Integer.parseInt(sharedPref.getString("server_port", ""));
    } catch (Exception e) {
      Log.w("ArduinoSocket", "Failed setting IP and PORT");
      Toast toast = Toast.makeText(parent.getApplicationContext(), "Please input settings", Toast.LENGTH_LONG);
      toast.show();
    }
    
  }
  
  public void close() {
    try {
      mHandler = null;
      if (sock != null) {
        sock.close();
      }
    } catch (IOException e) {
      // TODO Write error to parent view
      //e.printStackTrace();
      Log.e("ArduinoSocket", e.getMessage());
    }
  }

}

Java Source Code List