Android Open Source - marauder Marauder

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License

The source code is released under:

GNU General Public License

Java Source Code

package uk.co.doismellburning.marauder;
/* www.j  a v a2s . c  o  m*/
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Environment;
import android.util.JsonWriter;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.AbstractList;
import java.util.Date;
import java.util.List;

public class Marauder extends Activity {

  private WifiManager wifiManager;
  private WifiReceiver wifiReceiver;
  private TextView mainText;

  /**
   * Called when the activity is first created.
   */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    wifiManager.setWifiEnabled(true);
    wifiManager.startScan();
    wifiReceiver = new WifiReceiver();
    mainText = (TextView) findViewById(R.id.mainText);
    registerReceiver(wifiReceiver, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));

    wifiManager.startScan();
    mainText.setText("Starting Scan...");
  }

  public boolean onCreateOptionsMenu(Menu menu) {
    menu.add(0, 0, 0, "Refresh");
    return super.onCreateOptionsMenu(menu);
  }

  public boolean onMenuItemSelected(int featureId, MenuItem item) {
    wifiManager.startScan();
    mainText.append("\n\nRefreshing...");
    return super.onMenuItemSelected(featureId, item);
  }

  protected void onPause() {
    unregisterReceiver(wifiReceiver);
    super.onPause();
  }

  protected void onResume() {
    registerReceiver(wifiReceiver, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
    super.onResume();
  }

  class WifiReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
      StringBuilder sb = new StringBuilder();
      List<ScanResult> wifiList = wifiManager.getScanResults();
      JSONArray data = new JSONArray();
      for(int i = 0; i < wifiList.size(); i++){
        sb.append(new Integer(i+1).toString() + ".");
        ScanResult scanResult = wifiList.get(i);
        sb.append(scanResult.SSID + ": " + scanResult.level);
        sb.append("\n");
        data.put(scanResultToJSON(scanResult));
      }
      mainText.setText(sb);
      writeData(data);
    }
  }

  private void writeData(JSONArray data) {
    File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
    Date d = new Date();
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
    String name = df.format(d);
    File output = new File(path, name + ".json");

    try {
      if (!path.mkdirs()) {
        Log.e("marauder", "Could not make " + path);
        return; // TODO Better return type so we can like, alert users that their data is GOING INTO THE AETHER
      }

      OutputStream os = new FileOutputStream(output);
      Writer w = new OutputStreamWriter(os);
      w.write(data.toString());
      w.close();
      os.close();
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  public static boolean isExternalStorageWritable() {
    String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state)) {
      return true;
    }
    return false;
  }

  public static JSONObject scanResultToJSON(ScanResult scanResult) {
    JSONObject o = new JSONObject();
    try {
      o.put("BSSID", scanResult.BSSID);
      o.put("capabilities", scanResult.capabilities);
      o.put("frequency", scanResult.frequency);
      o.put("level", scanResult.level);
      o.put("SSID", scanResult.SSID);
      // o.put("timestamp", scanResult.timestamp); // TODO Requires SDK > myphone
    } catch (JSONException e) {
      e.printStackTrace(); // Sigh
    }
    return o;
  }
}

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