/*
* 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 android.app.Activity;
import android.app.Dialog;
import android.app.admin.DevicePolicyManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Resources;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.NetworkInfo.State;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.net.wifi.WpsInfo;
import android.nfc.NfcAdapter;
import android.os.Bundle;
import android.os.HandlerThread;
import android.os.Process;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceViewHolder;
import android.text.Spannable;
import android.text.TextUtils;
import android.text.style.TextAppearanceSpan;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.TextView.BufferType;
import android.widget.Toast;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.LinkifyUtils;
import com.android.settings.R;
import com.android.settings.RestrictedSettingsFragment;
import com.android.settings.SettingsActivity;
import com.android.settings.dashboard.SummaryLoader;
import com.android.settings.location.ScanningSettings;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Indexable;
import com.android.settings.search.SearchIndexableRaw;
import com.android.settingslib.RestrictedLockUtils;
import com.android.settingslib.wifi.AccessPoint;
import com.android.settingslib.wifi.AccessPoint.AccessPointListener;
import com.android.settingslib.wifi.AccessPointPreference;
import com.android.settingslib.wifi.WifiStatusTracker;
import com.android.settingslib.wifi.WifiTracker;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
/**
* 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 RestrictedSettingsFragment
implements Indexable, WifiTracker.WifiListener, AccessPointListener,
WifiDialog.WifiDialogListener {
private static final String TAG = "WifiSettings";
/* package */ 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_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 MENU_ID_WRITE_NFC = Menu.FIRST + 9;
private static final int MENU_ID_CONFIGURE = Menu.FIRST + 10;
public static final int WIFI_DIALOG_ID = 1;
/* package */ static final int WPS_PBC_DIALOG_ID = 2;
private static final int WPS_PIN_DIALOG_ID = 3;
private static final int WRITE_NFC_DIALOG_ID = 6;
// Instance state keys
private static final String SAVE_DIALOG_MODE = "dialog_mode";
private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state";
private static final String SAVED_WIFI_NFC_DIALOG_STATE = "wifi_nfc_dlg_state";
private static final String PREF_KEY_EMPTY_WIFI_LIST = "wifi_empty_list";
protected WifiManager mWifiManager;
private WifiManager.ActionListener mConnectListener;
private WifiManager.ActionListener mSaveListener;
private WifiManager.ActionListener mForgetListener;
private WifiEnabler mWifiEnabler;
// An access point being editted is stored here.
private AccessPoint mSelectedAccessPoint;
private WifiDialog mDialog;
private WriteWifiConfigToNfcDialog mWifiToNfcDialog;
private ProgressBar mProgressHeader;
// this boolean extra specifies whether to disable the Next button when not connected. Used by
// account creation outside of setup wizard.
private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect";
// This string extra specifies a network to open the connect dialog on, so the user can enter
// network credentials. This is used by quick settings for secured networks.
private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid";
// should Next button only be enabled when we have a connection?
private boolean mEnableNextOnConnection;
// Save the dialog details
private int mDialogMode;
private AccessPoint mDlgAccessPoint;
private Bundle mAccessPointSavedState;
private Bundle mWifiNfcDialogSavedState;
private WifiTracker mWifiTracker;
private String mOpenSsid;
private HandlerThread mBgThread;
private AccessPointPreference.UserBadgeCache mUserBadgeCache;
private Preference mAddPreference;
private MenuItem mScanMenuItem;
/* End of "used in Wifi Setup context" */
public WifiSettings() {
super(DISALLOW_CONFIG_WIFI);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
final Activity activity = getActivity();
if (activity != null) {
mProgressHeader = (ProgressBar) setPinnedHeaderView(R.layout.wifi_progress_header);
setProgressBarVisible(false);
}
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.wifi_settings);
mAddPreference = new Preference(getContext());
mAddPreference.setIcon(R.drawable.ic_menu_add_inset);
mAddPreference.setTitle(R.string.wifi_add_network);
mUserBadgeCache = new AccessPointPreference.UserBadgeCache(getPackageManager());
mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND);
mBgThread.start();
}
@Override
public void onDestroy() {
mBgThread.quit();
super.onDestroy();
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mWifiTracker =
new WifiTracker(getActivity(), this, mBgThread.getLooper(), true, true, false);
mWifiManager = mWifiTracker.getManager();
mConnectListener = new WifiManager.ActionListener() {
@Override
public void onSuccess() {
}
@Override
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() {
@Override
public void onSuccess() {
}
@Override
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() {
@Override
public void onSuccess() {
}
@Override
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) {
mDialogMode = savedInstanceState.getInt(SAVE_DIALOG_MODE);
if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) {
mAccessPointSavedState =
savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE);
}
if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) {
mWifiNfcDialogSavedState =
savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE);
}
}
// if we're supposed to enable/disable the Next button based on our current connection
// state, start it off in the right state
Intent intent = getActivity().getIntent();
mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false);
if (mEnableNextOnConnection) {
if (hasNextButton()) {
final ConnectivityManager connectivity = (ConnectivityManager)
getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo info = connectivity.getNetworkInfo(
ConnectivityManager.TYPE_WIFI);
changeNextButtonState(info.isConnected());
}
}
}
registerForContextMenu(getListView());
setHasOptionsMenu(true);
if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) {
mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID);
onAccessPointsChanged();
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
if (mWifiEnabler != null) {
mWifiEnabler.teardownSwitchBar();
}
}
@Override
public void onStart() {
super.onStart();
// On/off switch is hidden for Setup Wizard (returns null)
mWifiEnabler = createWifiEnabler();
mWifiTracker.startTracking();
}
/**
* @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard)
*/
/* package */ WifiEnabler createWifiEnabler() {
final SettingsActivity activity = (SettingsActivity) getActivity();
return new WifiEnabler(activity, activity.getSwitchBar());
}
@Override
public void onResume() {
final Activity activity = getActivity();
super.onResume();
removePreference("dummy");
if (mWifiEnabler != null) {
mWifiEnabler.resume(activity);
}
activity.invalidateOptionsMenu();
}
@Override
public void onPause() {
super.onPause();
if (mWifiEnabler != null) {
mWifiEnabler.pause();
}
}
@Override
public void onStop() {
super.onStop();
mWifiTracker.stopTracking();
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// If the user is not allowed to configure wifi, do not show the menu.
if (isUiRestricted()) return;
addOptionsMenuItems(menu);
super.onCreateOptionsMenu(menu, inflater);
}
/**
* @param menu
*/
void addOptionsMenuItems(Menu menu) {
final boolean wifiIsEnabled = mWifiTracker.isWifiEnabled();
mScanMenuItem = menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.menu_stats_refresh);
mScanMenuItem.setEnabled(wifiIsEnabled)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
menu.add(Menu.NONE, MENU_ID_CONFIGURE, 0, R.string.wifi_menu_configure)
.setIcon(R.drawable.ic_settings_24dp)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
}
@Override
protected int getMetricsCategory() {
return MetricsEvent.WIFI;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// If the dialog is showing, save its state.
if (mDialog != null && mDialog.isShowing()) {
outState.putInt(SAVE_DIALOG_MODE, mDialogMode);
if (mDlgAccessPoint != null) {
mAccessPointSavedState = new Bundle();
mDlgAccessPoint.saveWifiState(mAccessPointSavedState);
outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState);
}
}
if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) {
Bundle savedState = new Bundle();
mWifiToNfcDialog.saveState(savedState);
outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// If the user is not allowed to configure wifi, do not handle menu selections.
if (isUiRestricted()) return false;
switch (item.getItemId()) {
case MENU_ID_WPS_PBC:
showDialog(WPS_PBC_DIALOG_ID);
return true;
/*
case MENU_ID_P2P:
if (getActivity() instanceof SettingsActivity) {
((SettingsActivity) getActivity()).startPreferencePanel(
WifiP2pSettings.class.getCanonicalName(),
null,
R.string.wifi_p2p_settings_title, null,
this, 0);
} else {
startFragment(this, WifiP2pSettings.class.getCanonicalName(),
R.string.wifi_p2p_settings_title, -1, null);
}
return true;
*/
case MENU_ID_WPS_PIN:
showDialog(WPS_PIN_DIALOG_ID);
return true;
case MENU_ID_SCAN:
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_FORCE_SCAN);
mWifiTracker.forceScan();
return true;
case MENU_ID_ADVANCED:
if (getActivity() instanceof SettingsActivity) {
((SettingsActivity) getActivity()).startPreferencePanel(
AdvancedWifiSettings.class.getCanonicalName(), null,
R.string.wifi_advanced_titlebar, null, this, 0);
} else {
startFragment(this, AdvancedWifiSettings.class.getCanonicalName(),
R.string.wifi_advanced_titlebar, -1 /* Do not request a results */,
null);
}
return true;
case MENU_ID_CONFIGURE:
if (getActivity() instanceof SettingsActivity) {
((SettingsActivity) getActivity()).startPreferencePanel(
ConfigureWifiSettings.class.getCanonicalName(), null,
R.string.wifi_configure_titlebar, null, this, 0);
} else {
startFragment(this, ConfigureWifiSettings.class.getCanonicalName(),
R.string.wifi_configure_titlebar, -1 /* Do not request a results */,
null);
}
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) {
Preference preference = (Preference) view.getTag();
if (preference instanceof LongPressAccessPointPreference) {
mSelectedAccessPoint =
((LongPressAccessPointPreference) preference).getAccessPoint();
menu.setHeaderTitle(mSelectedAccessPoint.getSsid());
if (mSelectedAccessPoint.isConnectable()) {
menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect);
}
WifiConfiguration config = mSelectedAccessPoint.getConfig();
// Some configs are ineditable
if (isEditabilityLockedDown(getActivity(), config)) {
return;
}
if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) {
// Allow forgetting a network if either the network is saved or ephemerally
// connected. (In the latter case, "forget" blacklists the network so it won't
// be used again, ephemerally).
menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget);
}
if (mSelectedAccessPoint.isSaved()) {
menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify);
NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
if (nfcAdapter != null && nfcAdapter.isEnabled() &&
mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) {
// Only allow writing of NFC tags for password-protected networks.
menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc);
}
}
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
if (mSelectedAccessPoint == null) {
return super.onContextItemSelected(item);
}
switch (item.getItemId()) {
case MENU_ID_CONNECT: {
boolean isSavedNetwork = mSelectedAccessPoint.isSaved();
if (isSavedNetwork) {
connect(mSelectedAccessPoint.getConfig(), isSavedNetwork);
} else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) {
/** Bypass dialog for unsecured networks */
mSelectedAccessPoint.generateOpenNetworkConfig();
connect(mSelectedAccessPoint.getConfig(), isSavedNetwork);
} else {
showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT);
}
return true;
}
case MENU_ID_FORGET: {
forget();
return true;
}
case MENU_ID_MODIFY: {
showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_MODIFY);
return true;
}
case MENU_ID_WRITE_NFC:
showDialog(WRITE_NFC_DIALOG_ID);
return true;
}
return super.onContextItemSelected(item);
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
if (preference instanceof LongPressAccessPointPreference) {
mSelectedAccessPoint = ((LongPressAccessPointPreference) preference).getAccessPoint();
if (mSelectedAccessPoint == null) {
return false;
}
/** Bypass dialog for unsecured, unsaved, and inactive networks */
if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE &&
!mSelectedAccessPoint.isSaved() && !mSelectedAccessPoint.isActive()) {
mSelectedAccessPoint.generateOpenNetworkConfig();
connect(mSelectedAccessPoint.getConfig(), false /* isSavedNetwork */);
} else if (mSelectedAccessPoint.isSaved()) {
showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_VIEW);
} else {
showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT);
}
} else if (preference == mAddPreference) {
onAddNetworkPressed();
} else {
return super.onPreferenceTreeClick(preference);
}
return true;
}
private void showDialog(AccessPoint accessPoint, int dialogMode) {
if (accessPoint != null) {
WifiConfiguration config = accessPoint.getConfig();
if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) {
RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getActivity(),
RestrictedLockUtils.getDeviceOwner(getActivity()));
return;
}
}
if (mDialog != null) {
removeDialog(WIFI_DIALOG_ID);
mDialog = null;
}
// Save the access point and edit mode
mDlgAccessPoint = accessPoint;
mDialogMode = dialogMode;
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;
// Reset the saved access point data
mAccessPointSavedState = null;
}
}
// If it's null, fine, it's for Add Network
mSelectedAccessPoint = ap;
mDialog = new WifiDialog(getActivity(), this, ap, mDialogMode,
/* no hide submit/connect */ false);
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 WRITE_NFC_DIALOG_ID:
if (mSelectedAccessPoint != null) {
mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(
getActivity(), mSelectedAccessPoint.getConfig().networkId,
mSelectedAccessPoint.getSecurity(),
mWifiManager);
} else if (mWifiNfcDialogSavedState != null) {
mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(
getActivity(), mWifiNfcDialogSavedState, mWifiManager);
}
return mWifiToNfcDialog;
}
return super.onCreateDialog(dialogId);
}
/**
* Shows the latest access points available with supplemental information like
* the strength of network and the security for it.
*/
@Override
public void onAccessPointsChanged() {
// Safeguard from some delayed event handling
if (getActivity() == null) return;
final int wifiState = mWifiManager.getWifiState();
if (isUiRestricted()) {
if (!isUiRestrictedByOnlyAdmin()) {
if (WifiManager.WIFI_STATE_DISABLED == wifiState) {
addMessagePreference(R.string.wifi_empty_list_wifi_off);
}
else {
addMessagePreference(R.string.wifi_empty_list_user_restricted);
}
}
getPreferenceScreen().removeAll();
return;
}
switch (wifiState) {
case WifiManager.WIFI_STATE_ENABLED:
// AccessPoints are automatically sorted with TreeSet.
final Collection<AccessPoint> accessPoints =
mWifiTracker.getAccessPoints();
boolean hasAvailableAccessPoints = false;
int index = 0;
cacheRemoveAllPrefs(getPreferenceScreen());
for (AccessPoint accessPoint : accessPoints) {
// Ignore access points that are out of range.
if (accessPoint.getLevel() != -1) {
String key = accessPoint.getBssid();
if (TextUtils.isEmpty(key)) {
key = accessPoint.getSsidStr();
}
hasAvailableAccessPoints = true;
LongPressAccessPointPreference pref = (LongPressAccessPointPreference)
getCachedPreference(key);
if (pref != null) {
pref.setOrder(index++);
continue;
}
LongPressAccessPointPreference
preference = new LongPressAccessPointPreference(accessPoint,
getPrefContext(), mUserBadgeCache, false,
R.drawable.ic_wifi_signal_0, this);
preference.setKey(key);
preference.setOrder(index++);
if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsidStr())
&& !accessPoint.isSaved()
&& accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) {
onPreferenceTreeClick(preference);
mOpenSsid = null;
}
getPreferenceScreen().addPreference(preference);
accessPoint.setListener(this);
preference.refresh();
}
}
removeCachedPrefs(getPreferenceScreen());
if (!hasAvailableAccessPoints) {
setProgressBarVisible(true);
Preference pref = new Preference(getContext()) {
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
// Show a line on each side of add network.
holder.setDividerAllowedBelow(true);
}
};
pref.setSelectable(false);
pref.setSummary(R.string.wifi_empty_list_wifi_on);
pref.setOrder(0);
pref.setKey(PREF_KEY_EMPTY_WIFI_LIST);
getPreferenceScreen().addPreference(pref);
mAddPreference.setOrder(1);
getPreferenceScreen().addPreference(mAddPreference);
} else {
mAddPreference.setOrder(index++);
getPreferenceScreen().addPreference(mAddPreference);
setProgressBarVisible(false);
}
if (mScanMenuItem != null) {
mScanMenuItem.setEnabled(true);
}
break;
case WifiManager.WIFI_STATE_ENABLING:
getPreferenceScreen().removeAll();
setProgressBarVisible(true);
break;
case WifiManager.WIFI_STATE_DISABLING:
addMessagePreference(R.string.wifi_stopping);
setProgressBarVisible(true);
break;
case WifiManager.WIFI_STATE_DISABLED:
setOffMessage();
setProgressBarVisible(false);
if (mScanMenuItem != null) {
mScanMenuItem.setEnabled(false);
}
break;
}
}
private void setOffMessage() {
if (isUiRestricted()) {
if (!isUiRestrictedByOnlyAdmin()) {
addMessagePreference(R.string.wifi_empty_list_wifi_off);
}
getPreferenceScreen().removeAll();
return;
}
TextView emptyTextView = getEmptyTextView();
if (emptyTextView == null) {
return;
}
final CharSequence briefText = getText(R.string.wifi_empty_list_wifi_off);
// Don't use WifiManager.isScanAlwaysAvailable() to check the Wi-Fi scanning mode. Instead,
// read the system settings directly. Because when the device is in Airplane mode, even if
// Wi-Fi scanning mode is on, WifiManager.isScanAlwaysAvailable() still returns "off".
final ContentResolver resolver = getActivity().getContentResolver();
final boolean wifiScanningMode = Settings.Global.getInt(
resolver, Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1;
if (!wifiScanningMode) {
// Show only the brief text if the user is not allowed to configure scanning settings,
// or the scanning mode has been turned off.
emptyTextView.setText(briefText, BufferType.SPANNABLE);
} else {
// Append the description of scanning settings with link.
final StringBuilder contentBuilder = new StringBuilder();
contentBuilder.append(briefText);
contentBuilder.append("\n\n");
contentBuilder.append(getText(R.string.wifi_scan_notify_text));
LinkifyUtils.linkify(emptyTextView, contentBuilder, new LinkifyUtils.OnClickListener() {
@Override
public void onClick() {
final SettingsActivity activity =
(SettingsActivity) WifiSettings.this.getActivity();
activity.startPreferencePanel(ScanningSettings.class.getName(), null,
R.string.location_scanning_screen_title, null, null, 0);
}
});
}
// Embolden and enlarge the brief description anyway.
Spannable boldSpan = (Spannable) emptyTextView.getText();
boldSpan.setSpan(
new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0,
briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
getPreferenceScreen().removeAll();
}
private void addMessagePreference(int messageId) {
TextView emptyTextView = getEmptyTextView();
if (emptyTextView != null) emptyTextView.setText(messageId);
getPreferenceScreen().removeAll();
}
protected void setProgressBarVisible(boolean visible) {
if (mProgressHeader != null) {
mProgressHeader.setVisibility(visible && !isUiRestricted() ? View.VISIBLE : View.GONE);
}
}
@Override
public void onWifiStateChanged(int state) {
switch (state) {
case WifiManager.WIFI_STATE_ENABLING:
addMessagePreference(R.string.wifi_starting);
setProgressBarVisible(true);
break;
case WifiManager.WIFI_STATE_DISABLED:
setOffMessage();
setProgressBarVisible(false);
break;
}
}
@Override
public void onConnectedChanged() {
changeNextButtonState(mWifiTracker.isConnected());
}
/**
* Renames/replaces "Next" button when appropriate. "Next" button usually exists in
* Wifi setup screens, not in usual wifi settings screen.
*
* @param enabled true when the device is connected to a wifi network.
*/
private void changeNextButtonState(boolean enabled) {
if (mEnableNextOnConnection && hasNextButton()) {
getNextButton().setEnabled(enabled);
}
}
@Override
public void onForget(WifiDialog dialog) {
forget();
}
@Override
public void onSubmit(WifiDialog dialog) {
if (mDialog != null) {
submit(mDialog.getController());
}
}
/* package */ void submit(WifiConfigController configController) {
final WifiConfiguration config = configController.getConfig();
if (config == null) {
if (mSelectedAccessPoint != null
&& mSelectedAccessPoint.isSaved()) {
connect(mSelectedAccessPoint.getConfig(), true /* isSavedNetwork */);
}
} else if (configController.getMode() == WifiConfigUiBase.MODE_MODIFY) {
mWifiManager.save(config, mSaveListener);
} else {
mWifiManager.save(config, mSaveListener);
if (mSelectedAccessPoint != null) { // Not an "Add network"
connect(config, false /* isSavedNetwork */);
}
}
mWifiTracker.resumeScanning();
}
/* package */ void forget() {
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_FORGET);
if (!mSelectedAccessPoint.isSaved()) {
if (mSelectedAccessPoint.getNetworkInfo() != null &&
mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) {
// Network is active but has no network ID - must be ephemeral.
mWifiManager.disableEphemeralNetwork(
AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr()));
} else {
// Should not happen, but a monkey seems to trigger it
Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
return;
}
} else if (mSelectedAccessPoint.getConfig().isPasspoint()) {
mWifiManager.removePasspointConfiguration(mSelectedAccessPoint.getConfig().FQDN);
} else {
mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener);
}
mWifiTracker.resumeScanning();
// We need to rename/replace "Next" button in wifi setup context.
changeNextButtonState(false);
}
protected void connect(final WifiConfiguration config, boolean isSavedNetwork) {
// Log subtype if configuration is a saved network.
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT,
isSavedNetwork);
mWifiManager.connect(config, mConnectListener);
}
protected void connect(final int networkId, boolean isSavedNetwork) {
// Log subtype if configuration is a saved network.
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT,
isSavedNetwork);
mWifiManager.connect(networkId, mConnectListener);
}
/**
* Called when "add network" button is pressed.
*/
/* package */ void onAddNetworkPressed() {
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_ADD_NETWORK);
// No exact access point is selected.
mSelectedAccessPoint = null;
showDialog(null, WifiConfigUiBase.MODE_CONNECT);
}
@Override
protected int getHelpResource() {
return R.string.help_url_wifi;
}
@Override
public void onAccessPointChanged(final AccessPoint accessPoint) {
View view = getView();
if (view != null) {
view.post(new Runnable() {
@Override
public void run() {
Object tag = accessPoint.getTag();
if (tag != null) {
((LongPressAccessPointPreference) tag).refresh();
}
}
});
}
}
@Override
public void onLevelChanged(AccessPoint accessPoint) {
((LongPressAccessPointPreference) accessPoint.getTag()).onLevelChanged();
}
public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider() {
@Override
public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
final List<SearchIndexableRaw> result = new ArrayList<>();
final Resources res = context.getResources();
// Add fragment title
SearchIndexableRaw data = new SearchIndexableRaw(context);
data.title = res.getString(R.string.wifi_settings);
data.screenTitle = res.getString(R.string.wifi_settings);
data.keywords = res.getString(R.string.keywords_wifi);
result.add(data);
// Add saved Wi-Fi access points
final Collection<AccessPoint> accessPoints =
WifiTracker.getCurrentAccessPoints(context, true, false, false);
for (AccessPoint accessPoint : accessPoints) {
data = new SearchIndexableRaw(context);
data.title = accessPoint.getSsidStr();
data.screenTitle = res.getString(R.string.wifi_settings);
data.enabled = enabled;
result.add(data);
}
return result;
}
};
/**
* Returns true if the config is not editable through Settings.
* @param context Context of caller
* @param config The WiFi config.
* @return true if the config is not editable through Settings.
*/
static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) {
return !canModifyNetwork(context, config);
}
/**
* This method is a stripped version of WifiConfigStore.canModifyNetwork.
* TODO: refactor to have only one method.
* @param context Context of caller
* @param config The WiFi config.
* @return true if Settings can modify the config.
*/
static boolean canModifyNetwork(Context context, WifiConfiguration config) {
if (config == null) {
return true;
}
final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(
Context.DEVICE_POLICY_SERVICE);
// Check if device has DPM capability. If it has and dpm is still null, then we
// treat this case with suspicion and bail out.
final PackageManager pm = context.getPackageManager();
if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) {
return false;
}
boolean isConfigEligibleForLockdown = false;
if (dpm != null) {
final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser();
if (deviceOwner != null) {
final int deviceOwnerUserId = dpm.getDeviceOwnerUserId();
try {
final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(),
deviceOwnerUserId);
isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid;
} catch (NameNotFoundException e) {
// don't care
}
}
}
if (!isConfigEligibleForLockdown) {
return true;
}
final ContentResolver resolver = context.getContentResolver();
final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver,
Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0;
return !isLockdownFeatureEnabled;
}
private static class SummaryProvider extends BroadcastReceiver
implements SummaryLoader.SummaryProvider {
private final Context mContext;
private final WifiManager mWifiManager;
private final WifiStatusTracker mWifiTracker;
private final SummaryLoader mSummaryLoader;
public SummaryProvider(Context context, SummaryLoader summaryLoader) {
mContext = context;
mSummaryLoader = summaryLoader;
mWifiManager = context.getSystemService(WifiManager.class);
mWifiTracker = new WifiStatusTracker(mWifiManager);
}
private CharSequence getSummary() {
if (!mWifiTracker.enabled) {
return mContext.getString(R.string.wifi_disabled_generic);
}
if (!mWifiTracker.connected) {
return mContext.getString(R.string.disconnected);
}
return mWifiTracker.ssid;
}
@Override
public void setListening(boolean listening) {
if (listening) {
IntentFilter filter = new IntentFilter();
filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
filter.addAction(WifiManager.RSSI_CHANGED_ACTION);
mSummaryLoader.registerReceiver(this, filter);
}
}
@Override
public void onReceive(Context context, Intent intent) {
mWifiTracker.handleBroadcast(intent);
mSummaryLoader.setSummary(this, getSummary());
}
}
public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
= new SummaryLoader.SummaryProviderFactory() {
@Override
public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
SummaryLoader summaryLoader) {
return new SummaryProvider(activity, summaryLoader);
}
};
}