src/com/android/settings/wifi/AdvancedWifiSettings.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.settings.wifi;

 import android.app.Dialog;
 import android.app.DialogFragment;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.net.NetworkScoreManager;
 import android.net.NetworkScorerAppManager;
 import android.net.NetworkScorerAppManager.NetworkScorerAppData;
 import android.net.wifi.WifiInfo;
 import android.net.wifi.WifiManager;
 import android.net.wifi.WpsInfo;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.Preference.OnPreferenceClickListener;
 import android.preference.PreferenceScreen;
 import android.preference.SwitchPreference;
 import android.provider.Settings;
 import android.provider.Settings.Global;
 import android.security.Credentials;
 import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Toast;

 import com.android.settings.AppListSwitchPreference;
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.Utils;

 import java.util.Collection;

 public class AdvancedWifiSettings extends SettingsPreferenceFragment
         implements Preference.OnPreferenceChangeListener {

     private static final String TAG = "AdvancedWifiSettings";
     private static final String KEY_MAC_ADDRESS = "mac_address";
     private static final String KEY_CURRENT_IP_ADDRESS = "current_ip_address";
     private static final String KEY_FREQUENCY_BAND = "frequency_band";
     private static final String KEY_NOTIFY_OPEN_NETWORKS = "notify_open_networks";
     private static final String KEY_SLEEP_POLICY = "sleep_policy";
     private static final String KEY_SCAN_ALWAYS_AVAILABLE = "wifi_scan_always_available";
     private static final String KEY_INSTALL_CREDENTIALS = "install_credentials";
     private static final String KEY_WIFI_ASSISTANT = "wifi_assistant";
     private static final String KEY_WIFI_DIRECT = "wifi_direct";
     private static final String KEY_WPS_PUSH = "wps_push_button";
     private static final String KEY_WPS_PIN = "wps_pin_entry";

     private WifiManager mWifiManager;
     private NetworkScoreManager mNetworkScoreManager;
     private AppListSwitchPreference mWifiAssistantPreference;

     private IntentFilter mFilter;
     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if (action.equals(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION) ||
                 action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
                 refreshWifiInfo();
             }
         }
     };

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         addPreferencesFromResource(R.xml.wifi_advanced_settings);
     }

     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
         mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
         mFilter = new IntentFilter();
         mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION);
         mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
         mNetworkScoreManager =
                 (NetworkScoreManager) getSystemService(Context.NETWORK_SCORE_SERVICE);
     }

     @Override
     public void onResume() {
         super.onResume();
         initPreferences();
         getActivity().registerReceiver(mReceiver, mFilter);
         refreshWifiInfo();
     }

     @Override
     public void onPause() {
         super.onPause();
         getActivity().unregisterReceiver(mReceiver);
     }

     private void initPreferences() {
         SwitchPreference notifyOpenNetworks =
             (SwitchPreference) findPreference(KEY_NOTIFY_OPEN_NETWORKS);
         notifyOpenNetworks.setChecked(Settings.Global.getInt(getContentResolver(),
                 Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
         notifyOpenNetworks.setEnabled(mWifiManager.isWifiEnabled());

         SwitchPreference scanAlwaysAvailable =
             (SwitchPreference) findPreference(KEY_SCAN_ALWAYS_AVAILABLE);
         scanAlwaysAvailable.setChecked(Global.getInt(getContentResolver(),
                     Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1);

         Intent intent = new Intent(Credentials.INSTALL_AS_USER_ACTION);
         intent.setClassName("com.android.certinstaller",
                 "com.android.certinstaller.CertInstallerMain");
         intent.putExtra(Credentials.EXTRA_INSTALL_AS_UID, android.os.Process.WIFI_UID);
         Preference pref = findPreference(KEY_INSTALL_CREDENTIALS);
         pref.setIntent(intent);

         final Context context = getActivity();
         mWifiAssistantPreference = (AppListSwitchPreference) findPreference(KEY_WIFI_ASSISTANT);
         Collection<NetworkScorerAppData> scorers =
                 NetworkScorerAppManager.getAllValidScorers(context);
         if (UserHandle.myUserId() == UserHandle.USER_OWNER && !scorers.isEmpty()) {
             mWifiAssistantPreference.setOnPreferenceChangeListener(this);
             initWifiAssistantPreference(scorers);
         } else if (mWifiAssistantPreference != null) {
             getPreferenceScreen().removePreference(mWifiAssistantPreference);
         }

         Intent wifiDirectIntent = new Intent(context,
                 com.android.settings.Settings.WifiP2pSettingsActivity.class);
         Preference wifiDirectPref = findPreference(KEY_WIFI_DIRECT);
         wifiDirectPref.setIntent(wifiDirectIntent);

         // WpsDialog: Create the dialog like WifiSettings does.
         Preference wpsPushPref = findPreference(KEY_WPS_PUSH);
         wpsPushPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
                 public boolean onPreferenceClick(Preference arg0) {
                     WpsFragment wpsFragment = new WpsFragment(WpsInfo.PBC);
                     wpsFragment.show(getFragmentManager(), KEY_WPS_PUSH);
                     return true;
                 }
         });

         // WpsDialog: Create the dialog like WifiSettings does.
         Preference wpsPinPref = findPreference(KEY_WPS_PIN);
         wpsPinPref.setOnPreferenceClickListener(new OnPreferenceClickListener(){
                 public boolean onPreferenceClick(Preference arg0) {
                     WpsFragment wpsFragment = new WpsFragment(WpsInfo.DISPLAY);
                     wpsFragment.show(getFragmentManager(), KEY_WPS_PIN);
                     return true;
                 }
         });

         ListPreference frequencyPref = (ListPreference) findPreference(KEY_FREQUENCY_BAND);

         if (mWifiManager.isDualBandSupported()) {
             frequencyPref.setOnPreferenceChangeListener(this);
             int value = mWifiManager.getFrequencyBand();
             if (value != -1) {
                 frequencyPref.setValue(String.valueOf(value));
                 updateFrequencyBandSummary(frequencyPref, value);
             } else {
                 Log.e(TAG, "Failed to fetch frequency band");
             }
         } else {
             if (frequencyPref != null) {
                 // null if it has already been removed before resume
                 getPreferenceScreen().removePreference(frequencyPref);
             }
         }

         ListPreference sleepPolicyPref = (ListPreference) findPreference(KEY_SLEEP_POLICY);
         if (sleepPolicyPref != null) {
             if (Utils.isWifiOnly(context)) {
                 sleepPolicyPref.setEntries(R.array.wifi_sleep_policy_entries_wifi_only);
             }
             sleepPolicyPref.setOnPreferenceChangeListener(this);
             int value = Settings.Global.getInt(getContentResolver(),
                     Settings.Global.WIFI_SLEEP_POLICY,
                     Settings.Global.WIFI_SLEEP_POLICY_NEVER);
             String stringValue = String.valueOf(value);
             sleepPolicyPref.setValue(stringValue);
             updateSleepPolicySummary(sleepPolicyPref, stringValue);
         }
     }

     private void initWifiAssistantPreference(Collection<NetworkScorerAppData> scorers) {
         int count = scorers.size();
         String[] packageNames = new String[count];
         int i = 0;
         for (NetworkScorerAppData scorer : scorers) {
             packageNames[i] = scorer.mPackageName;
             i++;
         }
         mWifiAssistantPreference.setPackageNames(packageNames,
                 mNetworkScoreManager.getActiveScorerPackage());
     }

     private void updateSleepPolicySummary(Preference sleepPolicyPref, String value) {
         if (value != null) {
             String[] values = getResources().getStringArray(R.array.wifi_sleep_policy_values);
             final int summaryArrayResId = Utils.isWifiOnly(getActivity()) ?
                     R.array.wifi_sleep_policy_entries_wifi_only : R.array.wifi_sleep_policy_entries;
             String[] summaries = getResources().getStringArray(summaryArrayResId);
             for (int i = 0; i < values.length; i++) {
                 if (value.equals(values[i])) {
                     if (i < summaries.length) {
                         sleepPolicyPref.setSummary(summaries[i]);
                         return;
                     }
                 }
             }
         }

         sleepPolicyPref.setSummary("");
         Log.e(TAG, "Invalid sleep policy value: " + value);
     }

     private void updateFrequencyBandSummary(Preference frequencyBandPref, int index) {
         String[] summaries = getResources().getStringArray(R.array.wifi_frequency_band_entries);
         frequencyBandPref.setSummary(summaries[index]);
     }

     @Override
     public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
         String key = preference.getKey();

         if (KEY_NOTIFY_OPEN_NETWORKS.equals(key)) {
             Global.putInt(getContentResolver(),
                     Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
                     ((SwitchPreference) preference).isChecked() ? 1 : 0);
         } else if (KEY_SCAN_ALWAYS_AVAILABLE.equals(key)) {
             Global.putInt(getContentResolver(),
                     Global.WIFI_SCAN_ALWAYS_AVAILABLE,
                     ((SwitchPreference) preference).isChecked() ? 1 : 0);
         } else {
             return super.onPreferenceTreeClick(screen, preference);
         }
         return true;
     }

     @Override
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         final Context context = getActivity();
         String key = preference.getKey();

         if (KEY_FREQUENCY_BAND.equals(key)) {
             try {
                 int value = Integer.parseInt((String) newValue);
                 mWifiManager.setFrequencyBand(value, true);
                 updateFrequencyBandSummary(preference, value);
             } catch (NumberFormatException e) {
                 Toast.makeText(context, R.string.wifi_setting_frequency_band_error,
                         Toast.LENGTH_SHORT).show();
                 return false;
             }
         } else if (KEY_WIFI_ASSISTANT.equals(key)) {
             NetworkScorerAppData wifiAssistant =
                     NetworkScorerAppManager.getScorer(context, (String) newValue);
             if (wifiAssistant == null) {
                 mNetworkScoreManager.setActiveScorer(null);
                 return true;
             }

             Intent intent = new Intent();
             if (wifiAssistant.mConfigurationActivityClassName != null) {
                 // App has a custom configuration activity; launch that.
                 // This custom activity will be responsible for launching the system
                 // dialog.
                 intent.setClassName(wifiAssistant.mPackageName,
                         wifiAssistant.mConfigurationActivityClassName);
             } else {
                 // Fall back on the system dialog.
                 intent.setAction(NetworkScoreManager.ACTION_CHANGE_ACTIVE);
                 intent.putExtra(NetworkScoreManager.EXTRA_PACKAGE_NAME,
                         wifiAssistant.mPackageName);
             }

             startActivity(intent);
             // Don't update the preference widget state until the child activity returns.
             // It will be updated in onResume after the activity finishes.
             return false;
         }

         if (KEY_SLEEP_POLICY.equals(key)) {
             try {
                 String stringValue = (String) newValue;
                 Settings.Global.putInt(getContentResolver(), Settings.Global.WIFI_SLEEP_POLICY,
                         Integer.parseInt(stringValue));
                 updateSleepPolicySummary(preference, stringValue);
             } catch (NumberFormatException e) {
                 Toast.makeText(context, R.string.wifi_setting_sleep_policy_error,
                         Toast.LENGTH_SHORT).show();
                 return false;
             }
         }

         return true;
     }

     private void refreshWifiInfo() {
         final Context context = getActivity();
         WifiInfo wifiInfo = mWifiManager.getConnectionInfo();

         Preference wifiMacAddressPref = findPreference(KEY_MAC_ADDRESS);
         String macAddress = wifiInfo == null ? null : wifiInfo.getMacAddress();
         wifiMacAddressPref.setSummary(!TextUtils.isEmpty(macAddress) ? macAddress
                 : context.getString(R.string.status_unavailable));
         wifiMacAddressPref.setSelectable(false);

         Preference wifiIpAddressPref = findPreference(KEY_CURRENT_IP_ADDRESS);
         String ipAddress = Utils.getWifiIpAddresses(context);
         wifiIpAddressPref.setSummary(ipAddress == null ?
                 context.getString(R.string.status_unavailable) : ipAddress);
         wifiIpAddressPref.setSelectable(false);
     }

     /* Wrapper class for the WPS dialog to properly handle life cycle events like rotation. */
     public static class WpsFragment extends DialogFragment {
         private static int mWpsSetup;

         // Public default constructor is required for rotation.
         public WpsFragment() {
             super();
         }

         public WpsFragment(int wpsSetup) {
             super();
             mWpsSetup = wpsSetup;
         }

         @Override
         public Dialog onCreateDialog(Bundle savedInstanceState) {
             return new WpsDialog(getActivity(), mWpsSetup);
         }
     }

 }
	/*
	* Copyright (C) 2011 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.settings.wifi;

	import android.app.Dialog;
	import android.app.DialogFragment;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.net.NetworkScoreManager;
	import android.net.NetworkScorerAppManager;
	import android.net.NetworkScorerAppManager.NetworkScorerAppData;
	import android.net.wifi.WifiInfo;
	import android.net.wifi.WifiManager;
	import android.net.wifi.WpsInfo;
	import android.os.Bundle;
	import android.os.UserHandle;
	import android.preference.ListPreference;
	import android.preference.Preference;
	import android.preference.Preference.OnPreferenceClickListener;
	import android.preference.PreferenceScreen;
	import android.preference.SwitchPreference;
	import android.provider.Settings;
	import android.provider.Settings.Global;
	import android.security.Credentials;
	import android.text.TextUtils;
	import android.util.Log;
	import android.widget.Toast;

	import com.android.settings.AppListSwitchPreference;
	import com.android.settings.R;
	import com.android.settings.SettingsPreferenceFragment;
	import com.android.settings.Utils;

	import java.util.Collection;

	public class AdvancedWifiSettings extends SettingsPreferenceFragment
	implements Preference.OnPreferenceChangeListener {

	private static final String TAG = "AdvancedWifiSettings";
	private static final String KEY_MAC_ADDRESS = "mac_address";
	private static final String KEY_CURRENT_IP_ADDRESS = "current_ip_address";
	private static final String KEY_FREQUENCY_BAND = "frequency_band";
	private static final String KEY_NOTIFY_OPEN_NETWORKS = "notify_open_networks";
	private static final String KEY_SLEEP_POLICY = "sleep_policy";
	private static final String KEY_SCAN_ALWAYS_AVAILABLE = "wifi_scan_always_available";
	private static final String KEY_INSTALL_CREDENTIALS = "install_credentials";
	private static final String KEY_WIFI_ASSISTANT = "wifi_assistant";
	private static final String KEY_WIFI_DIRECT = "wifi_direct";
	private static final String KEY_WPS_PUSH = "wps_push_button";
	private static final String KEY_WPS_PIN = "wps_pin_entry";

	private WifiManager mWifiManager;
	private NetworkScoreManager mNetworkScoreManager;
	private AppListSwitchPreference mWifiAssistantPreference;

	private IntentFilter mFilter;
	private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	String action = intent.getAction();
	if (action.equals(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION) \|\|
	action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
	refreshWifiInfo();
	}
	}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	addPreferencesFromResource(R.xml.wifi_advanced_settings);
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
	super.onActivityCreated(savedInstanceState);
	mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
	mFilter = new IntentFilter();
	mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION);
	mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
	mNetworkScoreManager =
	(NetworkScoreManager) getSystemService(Context.NETWORK_SCORE_SERVICE);
	}

	@Override
	public void onResume() {
	super.onResume();
	initPreferences();
	getActivity().registerReceiver(mReceiver, mFilter);
	refreshWifiInfo();
	}

	@Override
	public void onPause() {
	super.onPause();
	getActivity().unregisterReceiver(mReceiver);
	}

	private void initPreferences() {
	SwitchPreference notifyOpenNetworks =
	(SwitchPreference) findPreference(KEY_NOTIFY_OPEN_NETWORKS);
	notifyOpenNetworks.setChecked(Settings.Global.getInt(getContentResolver(),
	Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
	notifyOpenNetworks.setEnabled(mWifiManager.isWifiEnabled());

	SwitchPreference scanAlwaysAvailable =
	(SwitchPreference) findPreference(KEY_SCAN_ALWAYS_AVAILABLE);
	scanAlwaysAvailable.setChecked(Global.getInt(getContentResolver(),
	Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1);

	Intent intent = new Intent(Credentials.INSTALL_AS_USER_ACTION);
	intent.setClassName("com.android.certinstaller",
	"com.android.certinstaller.CertInstallerMain");
	intent.putExtra(Credentials.EXTRA_INSTALL_AS_UID, android.os.Process.WIFI_UID);
	Preference pref = findPreference(KEY_INSTALL_CREDENTIALS);
	pref.setIntent(intent);

	final Context context = getActivity();
	mWifiAssistantPreference = (AppListSwitchPreference) findPreference(KEY_WIFI_ASSISTANT);
	Collection<NetworkScorerAppData> scorers =
	NetworkScorerAppManager.getAllValidScorers(context);
	if (UserHandle.myUserId() == UserHandle.USER_OWNER && !scorers.isEmpty()) {
	mWifiAssistantPreference.setOnPreferenceChangeListener(this);
	initWifiAssistantPreference(scorers);
	} else if (mWifiAssistantPreference != null) {
	getPreferenceScreen().removePreference(mWifiAssistantPreference);
	}

	Intent wifiDirectIntent = new Intent(context,
	com.android.settings.Settings.WifiP2pSettingsActivity.class);
	Preference wifiDirectPref = findPreference(KEY_WIFI_DIRECT);
	wifiDirectPref.setIntent(wifiDirectIntent);

	// WpsDialog: Create the dialog like WifiSettings does.
	Preference wpsPushPref = findPreference(KEY_WPS_PUSH);
	wpsPushPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
	public boolean onPreferenceClick(Preference arg0) {
	WpsFragment wpsFragment = new WpsFragment(WpsInfo.PBC);
	wpsFragment.show(getFragmentManager(), KEY_WPS_PUSH);
	return true;
	}
	});

	// WpsDialog: Create the dialog like WifiSettings does.
	Preference wpsPinPref = findPreference(KEY_WPS_PIN);
	wpsPinPref.setOnPreferenceClickListener(new OnPreferenceClickListener(){
	public boolean onPreferenceClick(Preference arg0) {
	WpsFragment wpsFragment = new WpsFragment(WpsInfo.DISPLAY);
	wpsFragment.show(getFragmentManager(), KEY_WPS_PIN);
	return true;
	}
	});

	ListPreference frequencyPref = (ListPreference) findPreference(KEY_FREQUENCY_BAND);

	if (mWifiManager.isDualBandSupported()) {
	frequencyPref.setOnPreferenceChangeListener(this);
	int value = mWifiManager.getFrequencyBand();
	if (value != -1) {
	frequencyPref.setValue(String.valueOf(value));
	updateFrequencyBandSummary(frequencyPref, value);
	} else {
	Log.e(TAG, "Failed to fetch frequency band");
	}
	} else {
	if (frequencyPref != null) {
	// null if it has already been removed before resume
	getPreferenceScreen().removePreference(frequencyPref);
	}
	}

	ListPreference sleepPolicyPref = (ListPreference) findPreference(KEY_SLEEP_POLICY);
	if (sleepPolicyPref != null) {
	if (Utils.isWifiOnly(context)) {
	sleepPolicyPref.setEntries(R.array.wifi_sleep_policy_entries_wifi_only);
	}
	sleepPolicyPref.setOnPreferenceChangeListener(this);
	int value = Settings.Global.getInt(getContentResolver(),
	Settings.Global.WIFI_SLEEP_POLICY,
	Settings.Global.WIFI_SLEEP_POLICY_NEVER);
	String stringValue = String.valueOf(value);
	sleepPolicyPref.setValue(stringValue);
	updateSleepPolicySummary(sleepPolicyPref, stringValue);
	}
	}

	private void initWifiAssistantPreference(Collection<NetworkScorerAppData> scorers) {
	int count = scorers.size();
	String[] packageNames = new String[count];
	int i = 0;
	for (NetworkScorerAppData scorer : scorers) {
	packageNames[i] = scorer.mPackageName;
	i++;
	}
	mWifiAssistantPreference.setPackageNames(packageNames,
	mNetworkScoreManager.getActiveScorerPackage());
	}

	private void updateSleepPolicySummary(Preference sleepPolicyPref, String value) {
	if (value != null) {
	String[] values = getResources().getStringArray(R.array.wifi_sleep_policy_values);
	final int summaryArrayResId = Utils.isWifiOnly(getActivity()) ?
	R.array.wifi_sleep_policy_entries_wifi_only : R.array.wifi_sleep_policy_entries;
	String[] summaries = getResources().getStringArray(summaryArrayResId);
	for (int i = 0; i < values.length; i++) {
	if (value.equals(values[i])) {
	if (i < summaries.length) {
	sleepPolicyPref.setSummary(summaries[i]);
	return;
	}
	}
	}
	}

	sleepPolicyPref.setSummary("");
	Log.e(TAG, "Invalid sleep policy value: " + value);
	}

	private void updateFrequencyBandSummary(Preference frequencyBandPref, int index) {
	String[] summaries = getResources().getStringArray(R.array.wifi_frequency_band_entries);
	frequencyBandPref.setSummary(summaries[index]);
	}

	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
	String key = preference.getKey();

	if (KEY_NOTIFY_OPEN_NETWORKS.equals(key)) {
	Global.putInt(getContentResolver(),
	Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
	((SwitchPreference) preference).isChecked() ? 1 : 0);
	} else if (KEY_SCAN_ALWAYS_AVAILABLE.equals(key)) {
	Global.putInt(getContentResolver(),
	Global.WIFI_SCAN_ALWAYS_AVAILABLE,
	((SwitchPreference) preference).isChecked() ? 1 : 0);
	} else {
	return super.onPreferenceTreeClick(screen, preference);
	}
	return true;
	}

	@Override
	public boolean onPreferenceChange(Preference preference, Object newValue) {
	final Context context = getActivity();
	String key = preference.getKey();

	if (KEY_FREQUENCY_BAND.equals(key)) {
	try {
	int value = Integer.parseInt((String) newValue);
	mWifiManager.setFrequencyBand(value, true);
	updateFrequencyBandSummary(preference, value);
	} catch (NumberFormatException e) {
	Toast.makeText(context, R.string.wifi_setting_frequency_band_error,
	Toast.LENGTH_SHORT).show();
	return false;
	}
	} else if (KEY_WIFI_ASSISTANT.equals(key)) {
	NetworkScorerAppData wifiAssistant =
	NetworkScorerAppManager.getScorer(context, (String) newValue);
	if (wifiAssistant == null) {
	mNetworkScoreManager.setActiveScorer(null);
	return true;
	}

	Intent intent = new Intent();
	if (wifiAssistant.mConfigurationActivityClassName != null) {
	// App has a custom configuration activity; launch that.
	// This custom activity will be responsible for launching the system
	// dialog.
	intent.setClassName(wifiAssistant.mPackageName,
	wifiAssistant.mConfigurationActivityClassName);
	} else {
	// Fall back on the system dialog.
	intent.setAction(NetworkScoreManager.ACTION_CHANGE_ACTIVE);
	intent.putExtra(NetworkScoreManager.EXTRA_PACKAGE_NAME,
	wifiAssistant.mPackageName);
	}

	startActivity(intent);
	// Don't update the preference widget state until the child activity returns.
	// It will be updated in onResume after the activity finishes.
	return false;
	}

	if (KEY_SLEEP_POLICY.equals(key)) {
	try {
	String stringValue = (String) newValue;
	Settings.Global.putInt(getContentResolver(), Settings.Global.WIFI_SLEEP_POLICY,
	Integer.parseInt(stringValue));
	updateSleepPolicySummary(preference, stringValue);
	} catch (NumberFormatException e) {
	Toast.makeText(context, R.string.wifi_setting_sleep_policy_error,
	Toast.LENGTH_SHORT).show();
	return false;
	}
	}

	return true;
	}

	private void refreshWifiInfo() {
	final Context context = getActivity();
	WifiInfo wifiInfo = mWifiManager.getConnectionInfo();

	Preference wifiMacAddressPref = findPreference(KEY_MAC_ADDRESS);
	String macAddress = wifiInfo == null ? null : wifiInfo.getMacAddress();
	wifiMacAddressPref.setSummary(!TextUtils.isEmpty(macAddress) ? macAddress
	: context.getString(R.string.status_unavailable));
	wifiMacAddressPref.setSelectable(false);

	Preference wifiIpAddressPref = findPreference(KEY_CURRENT_IP_ADDRESS);
	String ipAddress = Utils.getWifiIpAddresses(context);
	wifiIpAddressPref.setSummary(ipAddress == null ?
	context.getString(R.string.status_unavailable) : ipAddress);
	wifiIpAddressPref.setSelectable(false);
	}

	/* Wrapper class for the WPS dialog to properly handle life cycle events like rotation. */
	public static class WpsFragment extends DialogFragment {
	private static int mWpsSetup;

	// Public default constructor is required for rotation.
	public WpsFragment() {
	super();
	}

	public WpsFragment(int wpsSetup) {
	super();
	mWpsSetup = wpsSetup;
	}

	@Override
	public Dialog onCreateDialog(Bundle savedInstanceState) {
	return new WpsDialog(getActivity(), mWpsSetup);
	}
	}

	}