/* * Copyright (C) 2010 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 static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID; import android.app.ActionBar; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.content.res.Resources; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.NetworkInfo.DetailedState; import android.net.wifi.ScanResult; import android.net.wifi.SupplicantState; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.net.wifi.WpsInfo; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceScreen; import android.security.Credentials; import android.security.KeyStore; import android.telephony.TelephonyManager; import android.util.AttributeSet; import android.util.Log; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.Gravity; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.Button; import android.widget.ImageButton; import android.widget.PopupMenu; import android.widget.PopupMenu.OnMenuItemClickListener; import android.widget.RelativeLayout; import android.widget.Switch; import android.widget.TextView; import android.widget.Toast; import com.android.settings.R; import com.android.settings.SettingsPreferenceFragment; import com.android.settings.wifi.p2p.WifiP2pSettings; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.concurrent.atomic.AtomicBoolean; /** * Two types of UI are provided here. * * The first is for "usual Settings", appearing as any other Setup fragment. * * The second is for Setup Wizard, with a simplified interface that hides the action bar * and menus. */ public class WifiSettings extends SettingsPreferenceFragment implements DialogInterface.OnClickListener { private static final String TAG = "WifiSettings"; private static final int MENU_ID_WPS_PBC = Menu.FIRST; private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1; private static final int MENU_ID_P2P = Menu.FIRST + 2; private static final int MENU_ID_ADD_NETWORK = Menu.FIRST + 3; private static final int MENU_ID_ADVANCED = Menu.FIRST + 4; private static final int MENU_ID_SCAN = Menu.FIRST + 5; private static final int MENU_ID_CONNECT = Menu.FIRST + 6; private static final int MENU_ID_FORGET = Menu.FIRST + 7; private static final int MENU_ID_MODIFY = Menu.FIRST + 8; private static final int WIFI_DIALOG_ID = 1; private static final int WPS_PBC_DIALOG_ID = 2; private static final int WPS_PIN_DIALOG_ID = 3; private static final int WIFI_SKIPPED_DIALOG_ID = 4; private static final int WIFI_AND_MOBILE_SKIPPED_DIALOG_ID = 5; // Combo scans can take 5-6s to complete - set to 10s. private static final int WIFI_RESCAN_INTERVAL_MS = 10 * 1000; // Instance state keys private static final String SAVE_DIALOG_EDIT_MODE = "edit_mode"; private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state"; private final IntentFilter mFilter; private final BroadcastReceiver mReceiver; private final Scanner mScanner; private WifiManager mWifiManager; private WifiManager.ActionListener mConnectListener; private WifiManager.ActionListener mSaveListener; private WifiManager.ActionListener mForgetListener; private boolean mP2pSupported; private WifiEnabler mWifiEnabler; // An access point being editted is stored here. private AccessPoint mSelectedAccessPoint; private DetailedState mLastState; private WifiInfo mLastInfo; private AtomicBoolean mConnected = new AtomicBoolean(false); private int mKeyStoreNetworkId = INVALID_NETWORK_ID; private WifiDialog mDialog; private TextView mEmptyView; /* Used in Wifi Setup context */ // this boolean extra specifies whether to disable the Next button when not connected private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect"; // this boolean extra specifies whether to auto finish when connection is established private static final String EXTRA_AUTO_FINISH_ON_CONNECT = "wifi_auto_finish_on_connect"; // this boolean extra shows a custom button that we can control protected static final String EXTRA_SHOW_CUSTOM_BUTTON = "wifi_show_custom_button"; // show a text regarding data charges when wifi connection is required during setup wizard protected static final String EXTRA_SHOW_WIFI_REQUIRED_INFO = "wifi_show_wifi_required_info"; // this boolean extra is set if we are being invoked by the Setup Wizard private static final String EXTRA_IS_FIRST_RUN = "firstRun"; // should Next button only be enabled when we have a connection? private boolean mEnableNextOnConnection; // should activity finish once we have a connection? private boolean mAutoFinishOnConnection; // Save the dialog details private boolean mDlgEdit; private AccessPoint mDlgAccessPoint; private Bundle mAccessPointSavedState; // the action bar uses a different set of controls for Setup Wizard private boolean mSetupWizardMode; /* End of "used in Wifi Setup context" */ public WifiSettings() { mFilter = new IntentFilter(); mFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); mFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); mFilter.addAction(WifiManager.NETWORK_IDS_CHANGED_ACTION); mFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION); mFilter.addAction(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); mFilter.addAction(WifiManager.RSSI_CHANGED_ACTION); mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { handleEvent(context, intent); } }; mScanner = new Scanner(); } @Override public void onCreate(Bundle icicle) { // Set this flag early, as it's needed by getHelpResource(), which is called by super mSetupWizardMode = getActivity().getIntent().getBooleanExtra(EXTRA_IS_FIRST_RUN, false); super.onCreate(icicle); } @Override public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (mSetupWizardMode) { View view = inflater.inflate(R.layout.setup_preference, container, false); View other = view.findViewById(R.id.other_network); other.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mWifiManager.isWifiEnabled()) { onAddNetworkPressed(); } } }); final ImageButton b = (ImageButton) view.findViewById(R.id.more); if (b != null) { b.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mWifiManager.isWifiEnabled()) { PopupMenu pm = new PopupMenu(inflater.getContext(), b); pm.inflate(R.menu.wifi_setup); pm.setOnMenuItemClickListener(new OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { if (R.id.wifi_wps == item.getItemId()) { showDialog(WPS_PBC_DIALOG_ID); return true; } return false; } }); pm.show(); } } }); } Intent intent = getActivity().getIntent(); if (intent.getBooleanExtra(EXTRA_SHOW_CUSTOM_BUTTON, false)) { view.findViewById(R.id.button_bar).setVisibility(View.VISIBLE); view.findViewById(R.id.back_button).setVisibility(View.INVISIBLE); view.findViewById(R.id.skip_button).setVisibility(View.INVISIBLE); view.findViewById(R.id.next_button).setVisibility(View.INVISIBLE); Button customButton = (Button) view.findViewById(R.id.custom_button); customButton.setVisibility(View.VISIBLE); customButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (isPhone() && !hasSimProblem()) { showDialog(WIFI_SKIPPED_DIALOG_ID); } else { showDialog(WIFI_AND_MOBILE_SKIPPED_DIALOG_ID); } } }); } if (intent.getBooleanExtra(EXTRA_SHOW_WIFI_REQUIRED_INFO, false)) { view.findViewById(R.id.wifi_required_info).setVisibility(View.VISIBLE); } return view; } else { return super.onCreateView(inflater, container, savedInstanceState); } } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mP2pSupported = getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI_DIRECT); mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); mConnectListener = new WifiManager.ActionListener() { public void onSuccess() { } public void onFailure(int reason) { Activity activity = getActivity(); if (activity != null) { Toast.makeText(activity, R.string.wifi_failed_connect_message, Toast.LENGTH_SHORT).show(); } } }; mSaveListener = new WifiManager.ActionListener() { public void onSuccess() { } public void onFailure(int reason) { Activity activity = getActivity(); if (activity != null) { Toast.makeText(activity, R.string.wifi_failed_save_message, Toast.LENGTH_SHORT).show(); } } }; mForgetListener = new WifiManager.ActionListener() { public void onSuccess() { } public void onFailure(int reason) { Activity activity = getActivity(); if (activity != null) { Toast.makeText(activity, R.string.wifi_failed_forget_message, Toast.LENGTH_SHORT).show(); } } }; if (savedInstanceState != null && savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) { mDlgEdit = savedInstanceState.getBoolean(SAVE_DIALOG_EDIT_MODE); mAccessPointSavedState = savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE); } final Activity activity = getActivity(); final Intent intent = activity.getIntent(); // first if we're supposed to finish once we have a connection mAutoFinishOnConnection = intent.getBooleanExtra(EXTRA_AUTO_FINISH_ON_CONNECT, false); if (mAutoFinishOnConnection) { // Hide the next button if (hasNextButton()) { getNextButton().setVisibility(View.GONE); } final ConnectivityManager connectivity = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity != null && connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected()) { activity.setResult(Activity.RESULT_OK); activity.finish(); return; } } // if we're supposed to enable/disable the Next button based on our current connection // state, start it off in the right state mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); if (mEnableNextOnConnection) { if (hasNextButton()) { final ConnectivityManager connectivity = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity != null) { NetworkInfo info = connectivity.getNetworkInfo( ConnectivityManager.TYPE_WIFI); changeNextButtonState(info.isConnected()); } } } addPreferencesFromResource(R.xml.wifi_settings); if (mSetupWizardMode) { getView().setSystemUiVisibility( View.STATUS_BAR_DISABLE_BACK | View.STATUS_BAR_DISABLE_HOME | View.STATUS_BAR_DISABLE_RECENT | View.STATUS_BAR_DISABLE_NOTIFICATION_ALERTS | View.STATUS_BAR_DISABLE_CLOCK); } // On/off switch is hidden for Setup Wizard if (!mSetupWizardMode) { Switch actionBarSwitch = new Switch(activity); if (activity instanceof PreferenceActivity) { PreferenceActivity preferenceActivity = (PreferenceActivity) activity; if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) { final int padding = activity.getResources().getDimensionPixelSize( R.dimen.action_bar_switch_padding); actionBarSwitch.setPadding(0, 0, padding, 0); activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM, ActionBar.DISPLAY_SHOW_CUSTOM); activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams( ActionBar.LayoutParams.WRAP_CONTENT, ActionBar.LayoutParams.WRAP_CONTENT, Gravity.CENTER_VERTICAL | Gravity.END)); } } mWifiEnabler = new WifiEnabler(activity, actionBarSwitch); } mEmptyView = (TextView) getView().findViewById(android.R.id.empty); getListView().setEmptyView(mEmptyView); if (!mSetupWizardMode) { registerForContextMenu(getListView()); } setHasOptionsMenu(true); } @Override public void onResume() { super.onResume(); if (mWifiEnabler != null) { mWifiEnabler.resume(); } getActivity().registerReceiver(mReceiver, mFilter); if (mKeyStoreNetworkId != INVALID_NETWORK_ID && KeyStore.getInstance().state() == KeyStore.State.UNLOCKED) { mWifiManager.connect(mKeyStoreNetworkId, mConnectListener); } mKeyStoreNetworkId = INVALID_NETWORK_ID; updateAccessPoints(); } @Override public void onPause() { super.onPause(); if (mWifiEnabler != null) { mWifiEnabler.pause(); } getActivity().unregisterReceiver(mReceiver); mScanner.pause(); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { final boolean wifiIsEnabled = mWifiManager.isWifiEnabled(); if (mSetupWizardMode) { // FIXME: add setIcon() when graphics are available menu.add(Menu.NONE, MENU_ID_WPS_PBC, 0, R.string.wifi_menu_wps_pbc) .setIcon(R.drawable.ic_wps) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); } else { menu.add(Menu.NONE, MENU_ID_WPS_PBC, 0, R.string.wifi_menu_wps_pbc) .setIcon(R.drawable.ic_wps) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network) .setIcon(R.drawable.ic_menu_add) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.wifi_menu_scan) //.setIcon(R.drawable.ic_menu_scan_network) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); menu.add(Menu.NONE, MENU_ID_WPS_PIN, 0, R.string.wifi_menu_wps_pin) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); if (mP2pSupported) { menu.add(Menu.NONE, MENU_ID_P2P, 0, R.string.wifi_menu_p2p) .setEnabled(wifiIsEnabled) .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); } menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced) //.setIcon(android.R.drawable.ic_menu_manage) .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); } super.onCreateOptionsMenu(menu, inflater); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); // If the dialog is showing, save its state. if (mDialog != null && mDialog.isShowing()) { outState.putBoolean(SAVE_DIALOG_EDIT_MODE, mDlgEdit); if (mDlgAccessPoint != null) { mAccessPointSavedState = new Bundle(); mDlgAccessPoint.saveWifiState(mAccessPointSavedState); outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case MENU_ID_WPS_PBC: showDialog(WPS_PBC_DIALOG_ID); return true; case MENU_ID_P2P: if (getActivity() instanceof PreferenceActivity) { ((PreferenceActivity) getActivity()).startPreferencePanel( WifiP2pSettings.class.getCanonicalName(), null, R.string.wifi_p2p_settings_title, null, this, 0); } else { startFragment(this, WifiP2pSettings.class.getCanonicalName(), -1, null); } return true; case MENU_ID_WPS_PIN: showDialog(WPS_PIN_DIALOG_ID); return true; case MENU_ID_SCAN: if (mWifiManager.isWifiEnabled()) { mScanner.forceScan(); } return true; case MENU_ID_ADD_NETWORK: if (mWifiManager.isWifiEnabled()) { onAddNetworkPressed(); } return true; case MENU_ID_ADVANCED: if (getActivity() instanceof PreferenceActivity) { ((PreferenceActivity) getActivity()).startPreferencePanel( AdvancedWifiSettings.class.getCanonicalName(), null, R.string.wifi_advanced_titlebar, null, this, 0); } else { startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), -1, null); } return true; } return super.onOptionsItemSelected(item); } @Override public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { if (info instanceof AdapterContextMenuInfo) { Preference preference = (Preference) getListView().getItemAtPosition( ((AdapterContextMenuInfo) info).position); if (preference instanceof AccessPoint) { mSelectedAccessPoint = (AccessPoint) preference; menu.setHeaderTitle(mSelectedAccessPoint.ssid); if (mSelectedAccessPoint.getLevel() != -1 && mSelectedAccessPoint.getState() == null) { menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect); } if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); } } } } @Override public boolean onContextItemSelected(MenuItem item) { if (mSelectedAccessPoint == null) { return super.onContextItemSelected(item); } switch (item.getItemId()) { case MENU_ID_CONNECT: { if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { if (!requireKeyStore(mSelectedAccessPoint.getConfig())) { mWifiManager.connect(mSelectedAccessPoint.networkId, mConnectListener); } } else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) { /** Bypass dialog for unsecured networks */ mSelectedAccessPoint.generateOpenNetworkConfig(); mWifiManager.connect(mSelectedAccessPoint.getConfig(), mConnectListener); } else { showDialog(mSelectedAccessPoint, true); } return true; } case MENU_ID_FORGET: { mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener); return true; } case MENU_ID_MODIFY: { showDialog(mSelectedAccessPoint, true); return true; } } return super.onContextItemSelected(item); } @Override public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) { if (preference instanceof AccessPoint) { mSelectedAccessPoint = (AccessPoint) preference; /** Bypass dialog for unsecured, unsaved networks */ if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE && mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) { mSelectedAccessPoint.generateOpenNetworkConfig(); mWifiManager.connect(mSelectedAccessPoint.getConfig(), mConnectListener); } else { showDialog(mSelectedAccessPoint, false); } } else { return super.onPreferenceTreeClick(screen, preference); } return true; } private void showDialog(AccessPoint accessPoint, boolean edit) { if (mDialog != null) { removeDialog(WIFI_DIALOG_ID); mDialog = null; } // Save the access point and edit mode mDlgAccessPoint = accessPoint; mDlgEdit = edit; showDialog(WIFI_DIALOG_ID); } @Override public Dialog onCreateDialog(int dialogId) { switch (dialogId) { case WIFI_DIALOG_ID: AccessPoint ap = mDlgAccessPoint; // For manual launch if (ap == null) { // For re-launch from saved state if (mAccessPointSavedState != null) { ap = new AccessPoint(getActivity(), mAccessPointSavedState); // For repeated orientation changes mDlgAccessPoint = ap; } } // If it's still null, fine, it's for Add Network mSelectedAccessPoint = ap; mDialog = new WifiDialog(getActivity(), this, ap, mDlgEdit); return mDialog; case WPS_PBC_DIALOG_ID: return new WpsDialog(getActivity(), WpsInfo.PBC); case WPS_PIN_DIALOG_ID: return new WpsDialog(getActivity(), WpsInfo.DISPLAY); case WIFI_SKIPPED_DIALOG_ID: return new AlertDialog.Builder(getActivity()) .setMessage(R.string.wifi_skipped_message) .setCancelable(false) .setNegativeButton(R.string.wifi_skip_anyway, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { getActivity().setResult(Activity.RESULT_CANCELED); getActivity().finish(); } }) .setPositiveButton(R.string.wifi_dont_skip, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { } }) .create(); case WIFI_AND_MOBILE_SKIPPED_DIALOG_ID: return new AlertDialog.Builder(getActivity()) .setMessage(R.string.wifi_and_mobile_skipped_message) .setCancelable(false) .setNegativeButton(R.string.wifi_skip_anyway, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { getActivity().setResult(Activity.RESULT_CANCELED); getActivity().finish(); } }) .setPositiveButton(R.string.wifi_dont_skip, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { } }) .create(); } return super.onCreateDialog(dialogId); } private boolean isPhone() { final TelephonyManager telephonyManager = (TelephonyManager)this.getSystemService( Context.TELEPHONY_SERVICE); return telephonyManager != null && telephonyManager.getPhoneType() != TelephonyManager.PHONE_TYPE_NONE; } /** * Return true if there's any SIM related impediment to connectivity. * Treats Unknown as OK. (Only returns true if we're sure of a SIM problem.) */ protected boolean hasSimProblem() { final TelephonyManager telephonyManager = (TelephonyManager)this.getSystemService( Context.TELEPHONY_SERVICE); return telephonyManager != null && telephonyManager.getCurrentPhoneType() == TelephonyManager.PHONE_TYPE_GSM && telephonyManager.getSimState() != TelephonyManager.SIM_STATE_READY && telephonyManager.getSimState() != TelephonyManager.SIM_STATE_UNKNOWN; } private boolean requireKeyStore(WifiConfiguration config) { if (WifiConfigController.requireKeyStore(config) && KeyStore.getInstance().state() != KeyStore.State.UNLOCKED) { mKeyStoreNetworkId = config.networkId; Credentials.getInstance().unlock(getActivity()); return true; } return false; } /** * Shows the latest access points available with supplimental information like * the strength of network and the security for it. */ private void updateAccessPoints() { // Safeguard from some delayed event handling if (getActivity() == null) return; final int wifiState = mWifiManager.getWifiState(); switch (wifiState) { case WifiManager.WIFI_STATE_ENABLED: // AccessPoints are automatically sorted with TreeSet. final Collection accessPoints = constructAccessPoints(); getPreferenceScreen().removeAll(); if(accessPoints.size() == 0) { addMessagePreference(R.string.wifi_empty_list_wifi_on); } for (AccessPoint accessPoint : accessPoints) { getPreferenceScreen().addPreference(accessPoint); } break; case WifiManager.WIFI_STATE_ENABLING: getPreferenceScreen().removeAll(); break; case WifiManager.WIFI_STATE_DISABLING: addMessagePreference(R.string.wifi_stopping); break; case WifiManager.WIFI_STATE_DISABLED: addMessagePreference(R.string.wifi_empty_list_wifi_off); break; } } private void addMessagePreference(int messageId) { if (mEmptyView != null) mEmptyView.setText(messageId); getPreferenceScreen().removeAll(); } /** Returns sorted list of access points */ private List constructAccessPoints() { ArrayList accessPoints = new ArrayList(); /** Lookup table to more quickly update AccessPoints by only considering objects with the * correct SSID. Maps SSID -> List of AccessPoints with the given SSID. */ Multimap apMap = new Multimap(); final List configs = mWifiManager.getConfiguredNetworks(); if (configs != null) { for (WifiConfiguration config : configs) { AccessPoint accessPoint = new AccessPoint(getActivity(), config); accessPoint.update(mLastInfo, mLastState); accessPoints.add(accessPoint); apMap.put(accessPoint.ssid, accessPoint); } } final List results = mWifiManager.getScanResults(); if (results != null) { for (ScanResult result : results) { // Ignore hidden and ad-hoc networks. if (result.SSID == null || result.SSID.length() == 0 || result.capabilities.contains("[IBSS]")) { continue; } boolean found = false; for (AccessPoint accessPoint : apMap.getAll(result.SSID)) { if (accessPoint.update(result)) found = true; } if (!found) { AccessPoint accessPoint = new AccessPoint(getActivity(), result); accessPoints.add(accessPoint); apMap.put(accessPoint.ssid, accessPoint); } } } // Pre-sort accessPoints to speed preference insertion Collections.sort(accessPoints); return accessPoints; } /** A restricted multimap for use in constructAccessPoints */ private class Multimap { private HashMap> store = new HashMap>(); /** retrieve a non-null list of values with key K */ List getAll(K key) { List values = store.get(key); return values != null ? values : Collections.emptyList(); } void put(K key, V val) { List curVals = store.get(key); if (curVals == null) { curVals = new ArrayList(3); store.put(key, curVals); } curVals.add(val); } } private void handleEvent(Context context, Intent intent) { String action = intent.getAction(); if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) { updateWifiState(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_UNKNOWN)); } else if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action) || WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION.equals(action) || WifiManager.LINK_CONFIGURATION_CHANGED_ACTION.equals(action)) { updateAccessPoints(); } else if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)) { //Ignore supplicant state changes when network is connected //TODO: we should deprecate SUPPLICANT_STATE_CHANGED_ACTION and //introduce a broadcast that combines the supplicant and network //network state change events so the apps dont have to worry about //ignoring supplicant state change when network is connected //to get more fine grained information. SupplicantState state = (SupplicantState) intent.getParcelableExtra( WifiManager.EXTRA_NEW_STATE); if (!mConnected.get() && SupplicantState.isHandshakeState(state)) { updateConnectionState(WifiInfo.getDetailedStateOf(state)); } } else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) { NetworkInfo info = (NetworkInfo) intent.getParcelableExtra( WifiManager.EXTRA_NETWORK_INFO); mConnected.set(info.isConnected()); changeNextButtonState(info.isConnected()); updateAccessPoints(); updateConnectionState(info.getDetailedState()); if (mAutoFinishOnConnection && info.isConnected()) { Activity activity = getActivity(); if (activity != null) { activity.setResult(Activity.RESULT_OK); activity.finish(); } return; } } else if (WifiManager.RSSI_CHANGED_ACTION.equals(action)) { updateConnectionState(null); } } private void updateConnectionState(DetailedState state) { /* sticky broadcasts can call this when wifi is disabled */ if (!mWifiManager.isWifiEnabled()) { mScanner.pause(); return; } if (state == DetailedState.OBTAINING_IPADDR) { mScanner.pause(); } else { mScanner.resume(); } mLastInfo = mWifiManager.getConnectionInfo(); if (state != null) { mLastState = state; } for (int i = getPreferenceScreen().getPreferenceCount() - 1; i >= 0; --i) { // Maybe there's a WifiConfigPreference Preference preference = getPreferenceScreen().getPreference(i); if (preference instanceof AccessPoint) { final AccessPoint accessPoint = (AccessPoint) preference; accessPoint.update(mLastInfo, mLastState); } } } private void updateWifiState(int state) { Activity activity = getActivity(); if (activity != null) { activity.invalidateOptionsMenu(); } switch (state) { case WifiManager.WIFI_STATE_ENABLED: mScanner.resume(); return; // not break, to avoid the call to pause() below case WifiManager.WIFI_STATE_ENABLING: addMessagePreference(R.string.wifi_starting); break; case WifiManager.WIFI_STATE_DISABLED: addMessagePreference(R.string.wifi_empty_list_wifi_off); break; } mLastInfo = null; mLastState = null; mScanner.pause(); } private class Scanner extends Handler { private int mRetry = 0; void resume() { if (!hasMessages(0)) { sendEmptyMessage(0); } } void forceScan() { removeMessages(0); sendEmptyMessage(0); } void pause() { mRetry = 0; removeMessages(0); } @Override public void handleMessage(Message message) { if (mWifiManager.startScanActive()) { mRetry = 0; } else if (++mRetry >= 3) { mRetry = 0; Activity activity = getActivity(); if (activity != null) { Toast.makeText(activity, R.string.wifi_fail_to_scan, Toast.LENGTH_LONG).show(); } return; } sendEmptyMessageDelayed(0, WIFI_RESCAN_INTERVAL_MS); } } /** * Renames/replaces "Next" button when appropriate. "Next" button usually exists in * Wifi setup screens, not in usual wifi settings screen. * * @param connected true when the device is connected to a wifi network. */ private void changeNextButtonState(boolean connected) { if (mEnableNextOnConnection && hasNextButton()) { getNextButton().setEnabled(connected); } } public void onClick(DialogInterface dialogInterface, int button) { if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) { forget(); } else if (button == WifiDialog.BUTTON_SUBMIT) { submit(mDialog.getController()); } } /* package */ void submit(WifiConfigController configController) { final WifiConfiguration config = configController.getConfig(); if (config == null) { if (mSelectedAccessPoint != null && !requireKeyStore(mSelectedAccessPoint.getConfig()) && mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { mWifiManager.connect(mSelectedAccessPoint.networkId, mConnectListener); } } else if (config.networkId != INVALID_NETWORK_ID) { if (mSelectedAccessPoint != null) { mWifiManager.save(config, mSaveListener); } } else { if (configController.isEdit() || requireKeyStore(config)) { mWifiManager.save(config, mSaveListener); } else { mWifiManager.connect(config, mConnectListener); } } if (mWifiManager.isWifiEnabled()) { mScanner.resume(); } updateAccessPoints(); } /* package */ void forget() { if (mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) { // Should not happen, but a monkey seems to triger it Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig()); return; } mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener); if (mWifiManager.isWifiEnabled()) { mScanner.resume(); } updateAccessPoints(); // We need to rename/replace "Next" button in wifi setup context. changeNextButtonState(false); } /** * Refreshes acccess points and ask Wifi module to scan networks again. */ /* package */ void refreshAccessPoints() { if (mWifiManager.isWifiEnabled()) { mScanner.resume(); } getPreferenceScreen().removeAll(); } /** * Called when "add network" button is pressed. */ /* package */ void onAddNetworkPressed() { // No exact access point is selected. mSelectedAccessPoint = null; showDialog(null, true); } /* package */ int getAccessPointsCount() { final boolean wifiIsEnabled = mWifiManager.isWifiEnabled(); if (wifiIsEnabled) { return getPreferenceScreen().getPreferenceCount(); } else { return 0; } } /** * Requests wifi module to pause wifi scan. May be ignored when the module is disabled. */ /* package */ void pauseWifiScan() { if (mWifiManager.isWifiEnabled()) { mScanner.pause(); } } /** * Requests wifi module to resume wifi scan. May be ignored when the module is disabled. */ /* package */ void resumeWifiScan() { if (mWifiManager.isWifiEnabled()) { mScanner.resume(); } } @Override protected int getHelpResource() { if (mSetupWizardMode) { return 0; } return R.string.help_url_wifi; } /** * Used as the outer frame of all setup wizard pages that need to adjust their margins based * on the total size of the available display. (e.g. side margins set to 10% of total width.) */ public static class ProportionalOuterFrame extends RelativeLayout { public ProportionalOuterFrame(Context context) { super(context); } public ProportionalOuterFrame(Context context, AttributeSet attrs) { super(context, attrs); } public ProportionalOuterFrame(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } /** * Set our margins and title area height proportionally to the available display size */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int parentWidth = MeasureSpec.getSize(widthMeasureSpec); int parentHeight = MeasureSpec.getSize(heightMeasureSpec); final Resources resources = getContext().getResources(); float titleHeight = resources.getFraction(R.dimen.setup_title_height, 1, 1); float sideMargin = resources.getFraction(R.dimen.setup_border_width, 1, 1); int bottom = resources.getDimensionPixelSize(R.dimen.setup_margin_bottom); setPadding( (int) (parentWidth * sideMargin), 0, (int) (parentWidth * sideMargin), bottom); View title = findViewById(R.id.title_area); if (title != null) { title.setMinimumHeight((int) (parentHeight * titleHeight)); } super.onMeasure(widthMeasureSpec, heightMeasureSpec); } } }