I wish to create an application, that detects the available wifi connections in the vicinity, and then connects to them. What I have done till now, is that I created a ListView that lists the available wifi connections, and then I created a LongItemClick dialog box, that shows the SSID and the BSSID of the network, and asks for the password. Now, I wish to connect to one of the networks, independent of what kind of network it is, it might be WEP, WPA or Open too. I am unable to get an overview of how should I connect to them. Can anyone help me with this ? I searched all available answers, and I didn't find any answer, that could help me do this!
I try the above thing by the below method. I create a list view of all the available wi-fi networks in the vicinity, and then I try to show the connection info on long press, and give an option to connect to the clicked wi-fi network via click.
Code:
package com.example.random;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.FragmentManager;
import android.app.ListActivity;
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.WifiConfiguration;
import android.net.wifi.WifiConfiguration.AuthAlgorithm;
import android.net.wifi.WifiConfiguration.GroupCipher;
import android.net.wifi.WifiConfiguration.KeyMgmt;
import android.net.wifi.WifiConfiguration.PairwiseCipher;
import android.net.wifi.WifiConfiguration.Protocol;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends FragmentActivity implements OnClickListener
{
WifiManager wifi;
ListView lv;
// TextView textStatus;
Button buttonScan;
int size = 0;
List<ScanResult> results;
final Context context = this;
EditText pass;
String checkPassword = null;
String ITEM_KEY = "key";
ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
SimpleAdapter adapter;
/* Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// textStatus = (TextView) findViewById(R.id.textStatus);
buttonScan = (Button) findViewById(R.id.buttonScan);
buttonScan.setOnClickListener(this);
lv = (ListView)findViewById(R.id.list);
lv.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
connectToWifi(arg2);
}
private void connectToWifi(final int position)
{
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.connect);
dialog.setTitle("Connect to Network");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID);
TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID);
TextView capabilities = (TextView) dialog.findViewById(R.id.textCapabilities);
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
pass = (EditText) dialog.findViewById(R.id.textPassword);
textSSID.setText(results.get(position).SSID);
textBSSID.setText(results.get(position).BSSID);
capabilities.setText(results.get(position).capabilities);
//
// if button is clicked, connect to the network;
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
checkPassword = pass.getText().toString();
finallyConnect(checkPassword);
dialog.dismiss();
}
private void finallyConnect(String checkPassword) {
String networkSSID = results.get(position).SSID;
String networkPass = checkPassword;
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", networkSSID);
wifiConfig.preSharedKey = String.format("\"%s\"", networkPass);
WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
//remember id
int netId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"\"" + networkSSID + "\"\"";
conf.preSharedKey = "\""+ networkPass +"\"";
WifiManager wifiManager1 = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
wifiManager1.addNetwork(conf);
// List<WifiConfiguration> list = wifiManager1.getConfiguredNetworks();
// for( WifiConfiguration i : list ) {
// if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
// wifiManager1.disconnect();
//
// wifiManager1.enableNetwork(i.networkId, true);
// if(wifiManager1.reconnect()){
//// int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
//// Toast.makeText(getApplicationContext(), ipAddress, Toast.LENGTH_SHORT).show();
// Toast.makeText(getApplicationContext(), networkSSID + " "+ "Connection successful", Toast.LENGTH_SHORT).show();
// }
// else{
// Toast.makeText(getApplicationContext(), "Connection Failed", Toast.LENGTH_SHORT).show();
// }
//
// break;
//
// }
// }
}
});
dialog.show();
}
});
lv.setOnItemLongClickListener(new OnItemLongClickListener(){
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
showWifiSettings(arg2);
return true;
}
private void showWifiSettings(int arg2) {
showDialogOfOptions(arg2);
}
private void showDialogOfOptions(int arg2) {
// Create a custom Dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Network details");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID);
TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID);
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
textSSID.setText(results.get(arg2).SSID);
textBSSID.setText(results.get(arg2).BSSID);
// if button is clicked, close the custom dialog
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
});
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled() == false)
{
Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
wifi.setWifiEnabled(true);
}
this.adapter = new SimpleAdapter(MainActivity.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value });
lv.setAdapter(this.adapter);
registerReceiver(new BroadcastReceiver()
{
@Override
public void onReceive(Context c, Intent intent)
{
results = wifi.getScanResults();
size = results.size();
}
}, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
}
// protected void connectionStatus(String password) {
// // TODO Auto-generated method stub
//
//
// }
public void onClick(View view)
{
arraylist.clear();
wifi.startScan();
Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
try
{
size = size - 1;
while (size >= 0)
{
HashMap<String, String> item = new HashMap<String, String>();
item.put(ITEM_KEY, results.get(size).SSID.toString()+ results.get(size).capabilities.toString());
arraylist.add(item);
size--;
adapter.notifyDataSetChanged();
}
}
catch (Exception e)
{ }
}
}
The application is running fine, but it does not connect to any of the Wifi networks. Any help please ?
