How to make a Wifi Scanner on Android

FeongxD

Can processing do a wifi scanner on android device? Don't necessarily have to connect, just be able to scan surrounding wifi and display it on the screen.

KevinWorkman

Processing is built on top of Java. This isn't really a Processing question, more a Java question. Google is your friend.

FeongxD

sorry i didn't learn java, i've only learn abit of processing. i've tried a wifidirect remote cursor example from ketai hopping that it will be similar but still couldn't understand it

code:

import android.os.Bundle;

import ketai.net.wifidirect.*;

import ketai.net.*;
import ketai.ui.*;
import oscP5.*;
import netP5.*;

KetaiWiFiDirect net;

String info = "";
ArrayList<String> devices = new ArrayList();
boolean isConfiguring = true;
String UIText;
OscP5 oscP5;
String clientip = "";
KetaiList connectionList;
PVector remoteCursor = new PVector();

void setup()
{   
  orientation(PORTRAIT);
  background(78, 93, 75);
  stroke(255);
  textSize(24);

  UIText =  "d - discover devices\n" +
    "c - connect to device\n     from peer list.\n" +
    "i - show net information\n" +
    "o - start OSC Server\n" + 
    "p - list paired devices\n" + 
    "r - reset all connections\n" ;

  //register for key events(keyPressed currently Broken)
  //registerMethod("keyEvent", this);
}

void draw()
{
  background(78, 93, 75);
  if (isConfiguring)
  {
    info="";
    //based on last key pressed lets display
    //  appropriately
    if (key == 'i')
      info = getNetInformation();
    if (key == 'd')
    {
      info = "Discovered Devices:\n";
      devices = net.getPeerNameList();
      for (int i=0; i < devices.size(); i++)
      {
        info += "["+i+"] "+devices.get(i).toString() + "\t\t"+devices.size()+"\n";
      }
    }
    else if (key == 'p')
    {
      info += "Peers: \n";
      for (String s:net.getPeerNameList())
        info+= "\t" + s + "\n";
    }
    text(UIText + "\n\n" + info, 5, 90);
  }
  else
  {
    pushStyle();
    noStroke();
    fill(255);
    ellipse(mouseX, mouseY, 20, 20);
    fill(255, 0, 0);
    ellipse(remoteCursor.x, remoteCursor.y, 20, 20);
    popStyle();
  }
  drawUI();
}

void mousePressed()
{
  //keyboard button -- toggle virtual keyboard
  if (mouseY <= 50 && mouseX > 0 && mouseX < width/3)
    KetaiKeyboard.toggle(this);
  else if (mouseY <= 50 && mouseX > width/3 && mouseX < 2*(width/3)) //config button
  {
    isConfiguring=true;
  }
  else if (mouseY <= 50 && mouseX >  2*(width/3) && mouseX < width) // draw button
  {
    if (isConfiguring)
    {
      isConfiguring=false;
    }
  }
}

void mouseDragged()
{
  if (isConfiguring)
    return;

  OscMessage m = new OscMessage("/remoteCursor/");
  m.add(pmouseX);
  m.add(pmouseY);

  if (oscP5 != null)
  {
    NetAddress myRemoteLocation = null;

    if (clientip != "")
      myRemoteLocation = new NetAddress(clientip, 12000);
    else if (net.getIPAddress() != KetaiNet.getIP())
      myRemoteLocation = new NetAddress(net.getIPAddress(), 12000);

    if (myRemoteLocation != null)
      oscP5.send(m, myRemoteLocation);
  }
}

String getNetInformation()
{
  String Info = "Server Running: ";

  Info += "\n my IP: " + KetaiNet.getIP();
  Info += "\n initiator's IP:  " + net.getIPAddress();

  return Info;
}

void oscEvent(OscMessage m) {

  //lets send stuff back to whoever we got a message from
  if (net.getIPAddress() != m.netAddress().address())
    clientip = m.netAddress().address();

  if (m.checkAddrPattern("/remoteCursor/"))
  {
    if (m.checkTypetag("ii"))
    {
      remoteCursor.x = m.get(0).intValue();
      remoteCursor.y = m.get(1).intValue();
    }
  }
}