I'm using OSCP5 to link two processing sketches, one from an android device and the other in my computer, via WiFi.

I already tried it typing my computer's IP address directly on the new NetAddress that's on the setup() and it works just fine. However, I think it is best to give the user the chance to change the IP address of the computer to where the message is sent (it may change IP or change network and then the android app would not work).

I'm using a text field for the user to enter the IP address and then using this in a string called ipAddress that goes into the NetAddress that goes into the myRemoteLocation.

Here's my code (this goes on the phone):

2. import oscP5.*;
3. import netP5.*;
4. 
   
5. import apwidgets.*;
6. 
   
7. OscP5 oscP5;
8. NetAddress myRemoteLocation;
9. 
   
10. PWidgetContainer widgetContainer;
11. PEditText textField;
12. PButton button1;
13. 
    
14. PImage fondo;
15. 
    
16. boolean ValidIP = false;
17. String ipAddress = "192.168.0.107";
18. 
    
19. void setup() {
20.   size(480,800);
21.   smooth();
22. 
    
23.   fondo = loadImage("fondoAnd.jpg");
24.   
25.   widgetContainer = new PWidgetContainer(this);
26.   textField = new PEditText(10,40,380,120);
27.   button1 = new PButton(10,190,200,100,"Conectar");
28.   widgetContainer.addWidget(textField);
29.   widgetContainer.addWidget(button1);
30.   
31.   oscP5 = new OscP5(this,12000);
32.   myRemoteLocation = new NetAddress(ipAddress,12000);
33. }
34. 
    
35. void draw() {
36.   if (ValidIP == true){ 
37.     widgetContainer.hide();
38.     myRemoteLocation = new NetAddress(ipAddress,12000);
39.     background(fondo);
40.   }
41.   else if (ValidIP == false){
42.     background(0);
43.     textSize(20);
44.     text("Ingrese un IP válido",10,30);
45.     widgetContainer.show();
46.   }
47. }
48. 
    
49. void mousePressed(){
50.     OscMessage myMessage = new OscMessage("/test");
51.     myMessage.add(8);
52.     oscP5.send(myMessage, myRemoteLocation);
53.     println("enviomensaje"); //I print this in the console to know if it sends a message
54. }
55. 
    
56. void onClickWidget(PWidget widget){
57.   if(widget == button1){
58.     ipAddress = textField.getText();
59.     myRemoteLocation = new NetAddress(ipAddress,12000);
60.     ValidIP = true;
61.   }
62. }