Files
app_Settings/src/com/android/settings/wifi/WifiSettings.java
Daisuke Miyakawa 7e7ae9e59d Fragmentize wifi.AdvancedSettings.
Change-Id: I3dde2eb604886a8d0719549eabac76fadc74c220
2010-09-15 22:06:47 -07:00

678 lines
25 KiB
Java

/*
* 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 com.android.settings.ProgressCategoryBase;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
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.WifiConfiguration.KeyMgmt;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.provider.Settings.Secure;
import android.security.Credentials;
import android.security.KeyStore;
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.AdapterView.AdapterContextMenuInfo;
import android.widget.Button;
import android.widget.Toast;
import java.util.Collection;
import java.util.List;
import java.util.TreeSet;
/**
* This currently provides three types of UI.
*
* Two are for phones with relatively small screens: "for SetupWizard" and "for usual Settings".
* Users just need to launch WifiSettings Activity as usual. The request will be appropriately
* handled by ActivityManager, and they will have appropriate look-and-feel with this fragment.
*
* Third type is for Setup Wizard with X-Large, landscape UI. Users need to launch
* {@link WifiSettingsForSetupWizardXL} Activity, which contains this fragment but also has
* other decorations specific to that screen.
*/
public class WifiSettings extends SettingsPreferenceFragment
implements DialogInterface.OnClickListener {
private static final int MENU_ID_SCAN = Menu.FIRST;
private static final int MENU_ID_ADVANCED = Menu.FIRST + 1;
private static final int MENU_ID_CONNECT = Menu.FIRST + 2;
private static final int MENU_ID_FORGET = Menu.FIRST + 3;
private static final int MENU_ID_MODIFY = Menu.FIRST + 4;
// Indicates that this fragment is used as a part of Setup Wizard with XL screen settings.
// This fragment should show information which has been shown as Dialog in combined UI
// inside this fragment.
/* package */ static final String IN_XL_SETUP_WIZARD = "in_setup_wizard";
// this boolean extra specifies whether to disable the Next button when not connected
// Note: this is only effective in Setup Wizard with XL screen size.
private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect";
private final IntentFilter mFilter;
private final BroadcastReceiver mReceiver;
private final Scanner mScanner;
private WifiManager mWifiManager;
private WifiEnabler mWifiEnabler;
private CheckBoxPreference mNotifyOpenNetworks;
private ProgressCategoryBase mAccessPoints;
private Preference mAddNetwork;
// An access point being editted is stored here.
private AccessPoint mSelectedAccessPoint;
private DetailedState mLastState;
private WifiInfo mLastInfo;
private int mKeyStoreNetworkId = -1;
// should Next button only be enabled when we have a connection?
private boolean mEnableNextOnConnection;
private boolean mInXlSetupWizard;
// TODO: merge into one
private WifiConfigPreference mConfigPreference;
private WifiDialog mDialog;
private boolean mRefrainListUpdate;
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.SUPPLICANT_CONFIG_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(intent);
}
};
mScanner = new Scanner();
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
// We don't call super.onActivityCreated() here, since it assumes we already set up
// Preference (probably in onCreate()), while WifiSettings exceptionally set it up in
// this method.
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
final Activity activity = getActivity();
final Intent intent = activity.getIntent();
mInXlSetupWizard = intent.getBooleanExtra(IN_XL_SETUP_WIZARD, false);
// 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 (mEnableNextOnConnection && hasNextButton()) {
final ConnectivityManager connectivity = (ConnectivityManager)
getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo info = connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
changeNextButtonState(info.isConnected());
}
}
}
if (mInXlSetupWizard) {
addPreferencesFromResource(R.xml.wifi_access_points_for_wifi_setup_xl);
} else if (intent.getBooleanExtra("only_access_points", false)) {
addPreferencesFromResource(R.xml.wifi_access_points);
} else {
addPreferencesFromResource(R.xml.wifi_settings);
mWifiEnabler = new WifiEnabler(activity,
(CheckBoxPreference) findPreference("enable_wifi"));
mNotifyOpenNetworks =
(CheckBoxPreference) findPreference("notify_open_networks");
mNotifyOpenNetworks.setChecked(Secure.getInt(getContentResolver(),
Secure.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
}
// After confirming PreferenceScreen is available, we call super.
super.onActivityCreated(savedInstanceState);
// This may be either ProgressCategory or AccessPointCategoryForXL.
final ProgressCategoryBase preference =
(ProgressCategoryBase) findPreference("access_points");
mAccessPoints = preference;
mAccessPoints.setOrderingAsAdded(true);
mAddNetwork = findPreference("add_network");
registerForContextMenu(getListView());
setHasOptionsMenu(true);
}
@Override
public void onResume() {
super.onResume();
if (mWifiEnabler != null) {
mWifiEnabler.resume();
}
getActivity().registerReceiver(mReceiver, mFilter);
if (mKeyStoreNetworkId != -1 && KeyStore.getInstance().test() == KeyStore.NO_ERROR) {
mWifiManager.connectNetwork(mKeyStoreNetworkId);
}
mKeyStoreNetworkId = -1;
if (mInXlSetupWizard) {
// We show "Now scanning"
final int wifiState = mWifiManager.getWifiState();
switch (wifiState) {
case WifiManager.WIFI_STATE_ENABLED: {
updateAccessPoints();
break;
}
case WifiManager.WIFI_STATE_DISABLED:
case WifiManager.WIFI_STATE_DISABLING:
case WifiManager.WIFI_STATE_UNKNOWN: {
mWifiManager.setWifiEnabled(true);
} // $FALL-THROUGH$
default: {
mAccessPoints.removeAll();
Preference preference = new Preference(getActivity());
preference.setLayoutResource(R.layout.preference_widget_shortcut);
preference.setSelectable(false);
preference.setTitle("Connecting");
preference.setSummary("COONNECTING");
mAccessPoints.addPreference(preference);
break;
}
}
} else {
updateAccessPoints();
}
}
@Override
public void onPause() {
super.onPause();
if (mWifiEnabler != null) {
mWifiEnabler.pause();
}
getActivity().unregisterReceiver(mReceiver);
mScanner.pause();
if (mDialog != null) {
mDialog.dismiss();
mDialog = null;
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// We don't want menus in Setup Wizard XL.
if (!mInXlSetupWizard) {
menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.wifi_menu_scan)
.setIcon(R.drawable.ic_menu_scan_network);
menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced)
.setIcon(android.R.drawable.ic_menu_manage);
}
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_ID_SCAN:
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
return true;
case MENU_ID_ADVANCED:
startFragment(this, AdvancedSettings.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 != -1) {
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 != -1) {
if (!requireKeyStore(mSelectedAccessPoint.getConfig())) {
mWifiManager.connectNetwork(mSelectedAccessPoint.networkId);
}
} else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) {
// Shortcut for open networks.
WifiConfiguration config = new WifiConfiguration();
config.SSID = AccessPoint.convertToQuotedString(mSelectedAccessPoint.ssid);
config.allowedKeyManagement.set(KeyMgmt.NONE);
mWifiManager.connectNetwork(config);
} else {
showConfigUi(mSelectedAccessPoint, true);
}
return true;
}
case MENU_ID_FORGET: {
mWifiManager.forgetNetwork(mSelectedAccessPoint.networkId);
return true;
}
case MENU_ID_MODIFY: {
showConfigUi(mSelectedAccessPoint, true);
return true;
}
}
return super.onContextItemSelected(item);
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
if (preference instanceof AccessPoint) {
mSelectedAccessPoint = (AccessPoint) preference;
showConfigUi(mSelectedAccessPoint, false);
} else if (preference == mAddNetwork) {
onAddNetworkPressed();
} else if (preference == mNotifyOpenNetworks) {
Secure.putInt(getContentResolver(),
Secure.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
mNotifyOpenNetworks.isChecked() ? 1 : 0);
} else {
return super.onPreferenceTreeClick(screen, preference);
}
return true;
}
/**
* Called when a user clicks "Add network" preference or relevant button.
*/
private void showConfigUi(AccessPoint accessPoint, boolean edit) {
synchronized (this) {
mRefrainListUpdate = false;
}
if (mInXlSetupWizard) {
final Activity activity = getActivity();
activity.findViewById(R.id.wifi_setup_connect).setVisibility(View.VISIBLE);
activity.findViewById(R.id.wifi_setup_cancel).setVisibility(View.VISIBLE);
showConfigPreference(accessPoint, edit);
} else {
showDialog(accessPoint, edit);
}
}
private void showConfigPreference(AccessPoint accessPoint, boolean edit) {
// We don't want to show more than one WifiConfigPreference
if (mConfigPreference != null) {
mAccessPoints.removePreference(mConfigPreference);
}
mConfigPreference = new WifiConfigPreference(this, this, accessPoint, edit);
toggleButtonsVisibility(false);
updateAccessPoints();
mScanner.pause();
}
private void toggleButtonsVisibility(boolean firstLayout) {
final Activity activity = getActivity();
if (firstLayout) {
activity.findViewById(R.id.wifi_setup_add_network).setVisibility(View.VISIBLE);
activity.findViewById(R.id.wifi_setup_refresh_list).setVisibility(View.VISIBLE);
activity.findViewById(R.id.wifi_setup_skip_or_next).setVisibility(View.VISIBLE);
activity.findViewById(R.id.wifi_setup_connect).setVisibility(View.GONE);
activity.findViewById(R.id.wifi_setup_forget).setVisibility(View.GONE);
activity.findViewById(R.id.wifi_setup_cancel).setVisibility(View.GONE);
} else {
activity.findViewById(R.id.wifi_setup_add_network).setVisibility(View.GONE);
activity.findViewById(R.id.wifi_setup_refresh_list).setVisibility(View.GONE);
activity.findViewById(R.id.wifi_setup_skip_or_next).setVisibility(View.GONE);
// made visible from controller.
}
}
private void showDialog(AccessPoint accessPoint, boolean edit) {
if (mDialog != null) {
mDialog.dismiss();
}
mDialog = new WifiDialog(getActivity(), this, accessPoint, edit);
mDialog.show();
}
private boolean requireKeyStore(WifiConfiguration config) {
if (WifiConfigController.requireKeyStore(config) &&
KeyStore.getInstance().test() != KeyStore.NO_ERROR) {
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() {
synchronized (this) {
if (mRefrainListUpdate) {
return;
}
}
if (mConfigPreference != null) {
mAccessPoints.removeAll();
final AccessPoint parent = mConfigPreference.getAccessPoint();
if (parent != null) {
parent.setSelectable(false);
mAccessPoints.addPreference(parent);
}
mAccessPoints.addPreference(mConfigPreference);
} else {
// AccessPoints are automatically sorted with TreeSet.
final Collection<AccessPoint> accessPoints = constructAccessPoints();
mAccessPoints.removeAll();
for (AccessPoint accessPoint : accessPoints) {
mAccessPoints.addPreference(accessPoint);
}
}
}
private Collection<AccessPoint> constructAccessPoints() {
Collection<AccessPoint> accessPoints =
new TreeSet<AccessPoint>(new AccessPoint.Comparater());
final List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks();
if (configs != null) {
for (WifiConfiguration config : configs) {
AccessPoint accessPoint = new AccessPoint(getActivity(), config);
accessPoint.update(mLastInfo, mLastState);
accessPoints.add(accessPoint);
}
}
final List<ScanResult> 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 : accessPoints) {
if (accessPoint.update(result)) {
found = true;
}
}
if (!found) {
accessPoints.add(new AccessPoint(getActivity(), result));
}
}
}
return accessPoints;
}
private void handleEvent(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.SUPPLICANT_CONFIG_CHANGED_ACTION.equals(action)) {
updateAccessPoints();
} else if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)) {
updateConnectionState(WifiInfo.getDetailedStateOf((SupplicantState)
intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE)));
} else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) {
NetworkInfo info = (NetworkInfo) intent.getParcelableExtra(
WifiManager.EXTRA_NETWORK_INFO);
changeNextButtonState(info.isConnected());
updateConnectionState(info.getDetailedState());
} 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 = mAccessPoints.getPreferenceCount() - 1; i >= 0; --i) {
// Maybe there's a WifiConfigPreference
Preference preference = mAccessPoints.getPreference(i);
if (preference instanceof AccessPoint) {
((AccessPoint) preference).update(mLastInfo, mLastState);
}
}
final Activity activity = getActivity();
if (activity instanceof WifiSettingsForSetupWizardXL) {
((WifiSettingsForSetupWizardXL)activity).updateConnectionState(mLastState);
}
}
private void updateWifiState(int state) {
if (state == WifiManager.WIFI_STATE_ENABLED) {
mScanner.resume();
} else {
mScanner.pause();
mAccessPoints.removeAll();
}
}
private class Scanner extends Handler {
private int mRetry = 0;
void resume() {
synchronized (WifiSettings.this) {
mRefrainListUpdate = false;
}
if (!hasMessages(0)) {
sendEmptyMessage(0);
}
}
void pause() {
mRetry = 0;
mAccessPoints.setProgress(false);
synchronized (WifiSettings.this) {
mRefrainListUpdate = true;
}
removeMessages(0);
}
@Override
public void handleMessage(Message message) {
if (mWifiManager.startScanActive()) {
mRetry = 0;
} else if (++mRetry >= 3) {
mRetry = 0;
Toast.makeText(getActivity(), R.string.wifi_fail_to_scan,
Toast.LENGTH_LONG).show();
return;
}
mAccessPoints.setProgress(mRetry != 0);
// Combo scans can take 5-6s to complete. Increase interval to 10s.
sendEmptyMessageDelayed(0, 10000);
}
}
private void changeNextButtonState(boolean wifiAvailable) {
if (mInXlSetupWizard) {
final Button button =
(Button)getActivity().findViewById(R.id.wifi_setup_skip_or_next);
button.setEnabled(true);
if (wifiAvailable) {
button.setText(R.string.wifi_setup_next);
} else {
button.setText(R.string.wifi_setup_skip);
}
} else if (mEnableNextOnConnection && hasNextButton()) {
// Assumes layout for phones has next button inside it.
getNextButton().setEnabled(wifiAvailable);
}
}
public void onClick(DialogInterface dialogInterface, int button) {
if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) {
forget();
} else if (button == WifiDialog.BUTTON_SUBMIT) {
submit();
}
}
/* package */ void submit() {
final WifiConfigUiBase uiBase = (mDialog != null ? mDialog : mConfigPreference);
final WifiConfiguration config = uiBase.getController().getConfig();
if (config == null) {
if (mSelectedAccessPoint != null
&& !requireKeyStore(mSelectedAccessPoint.getConfig())) {
mWifiManager.connectNetwork(mSelectedAccessPoint.networkId);
}
} else if (config.networkId != -1) {
if (mSelectedAccessPoint != null) {
mWifiManager.saveNetwork(config);
}
} else {
if (uiBase.isEdit() || requireKeyStore(config)) {
mWifiManager.saveNetwork(config);
} else {
mWifiManager.connectNetwork(config);
}
}
detachConfigPreference();
}
/* package */ void forget() {
mWifiManager.forgetNetwork(mSelectedAccessPoint.networkId);
detachConfigPreference();
changeNextButtonState(false);
final Activity activity = getActivity();
if (activity instanceof WifiSettingsForSetupWizardXL) {
((WifiSettingsForSetupWizardXL)activity).onForget();
}
}
/* package */ void refreshAccessPoints() {
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
mConfigPreference = null;
mAccessPoints.removeAll();
final Activity activity = getActivity();
if (activity instanceof WifiSettingsForSetupWizardXL) {
((WifiSettingsForSetupWizardXL)activity).onRefreshAccessPoints();
}
}
/* package */ void detachConfigPreference() {
if (mConfigPreference != null) {
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
mAccessPoints.removePreference(mConfigPreference);
mConfigPreference = null;
updateAccessPoints();
toggleButtonsVisibility(true);
}
}
/* package */ void onAddNetworkPressed() {
mSelectedAccessPoint = null;
showConfigUi(null, true);
}
/* package */ int getAccessPointsCount() {
if (mAccessPoints != null) {
return mAccessPoints.getPreferenceCount();
} else {
return 0;
}
}
}