ConfigureWifiSettings.java revision c179f33c878ec0fcc7e2d71d596dc518a50349a3 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package com.android.settings.wifi;
17
18import android.content.BroadcastReceiver;
19import android.content.Context;
20import android.content.Intent;
21import android.content.IntentFilter;
22import android.content.res.Resources;
23import android.net.NetworkScoreManager;
24import android.net.NetworkScorerAppManager;
25import android.net.wifi.WifiConfiguration;
26import android.net.wifi.WifiInfo;
27import android.net.wifi.WifiManager;
28import android.os.Bundle;
29import android.os.UserManager;
30import android.provider.Settings;
31import android.support.v14.preference.SwitchPreference;
32import android.support.v7.preference.ListPreference;
33import android.support.v7.preference.Preference;
34import android.text.TextUtils;
35import android.util.Log;
36import android.widget.Toast;
37import com.android.internal.logging.MetricsProto.MetricsEvent;
38import com.android.settings.AppListSwitchPreference;
39import com.android.settings.R;
40import com.android.settings.SettingsPreferenceFragment;
41import com.android.settings.Utils;
42
43import java.util.Collection;
44import java.util.List;
45
46public class ConfigureWifiSettings extends SettingsPreferenceFragment
47        implements Preference.OnPreferenceChangeListener {
48    private static final String TAG = "ConfigureWifiSettings";
49
50    private static final String KEY_MAC_ADDRESS = "mac_address";
51    private static final String KEY_SAVED_NETWORKS = "saved_networks";
52    private static final String KEY_CURRENT_IP_ADDRESS = "current_ip_address";
53    private static final String KEY_NOTIFY_OPEN_NETWORKS = "notify_open_networks";
54    private static final String KEY_SLEEP_POLICY = "sleep_policy";
55    private static final String KEY_CELLULAR_FALLBACK = "wifi_cellular_data_fallback";
56    private static final String KEY_WIFI_ASSISTANT = "wifi_assistant";
57
58    private WifiManager mWifiManager;
59    private NetworkScoreManager mNetworkScoreManager;
60    private AppListSwitchPreference mWifiAssistantPreference;
61
62    private IntentFilter mFilter;
63
64    @Override
65    public void onCreate(Bundle icicle) {
66        super.onCreate(icicle);
67        addPreferencesFromResource(R.xml.wifi_configure_settings);
68    }
69
70    @Override
71    public void onActivityCreated(Bundle savedInstanceState) {
72        super.onActivityCreated(savedInstanceState);
73        mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
74        mFilter = new IntentFilter();
75        mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION);
76        mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
77        mNetworkScoreManager =
78                (NetworkScoreManager) getSystemService(Context.NETWORK_SCORE_SERVICE);
79    }
80
81    @Override
82    public void onResume() {
83        super.onResume();
84        initPreferences();
85        getActivity().registerReceiver(mReceiver, mFilter);
86        refreshWifiInfo();
87    }
88
89    @Override
90    public void onPause() {
91        super.onPause();
92        getActivity().unregisterReceiver(mReceiver);
93    }
94
95    private void initPreferences() {
96        List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks();
97        if (configs == null || configs.size() == 0) {
98            removePreference(KEY_SAVED_NETWORKS);
99        }
100
101        SwitchPreference notifyOpenNetworks =
102                (SwitchPreference) findPreference(KEY_NOTIFY_OPEN_NETWORKS);
103        notifyOpenNetworks.setChecked(Settings.Global.getInt(getContentResolver(),
104                Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
105        notifyOpenNetworks.setEnabled(mWifiManager.isWifiEnabled());
106
107        final Context context = getActivity();
108        if (avoidBadWifiConfig()) {
109            // Hide preference toggle, always avoid bad wifi networks.
110            removePreference(KEY_CELLULAR_FALLBACK);
111        } else {
112            // Show preference toggle, initialized based on current settings value.
113            boolean currentSetting = avoidBadWifiCurrentSettings();
114            SwitchPreference pref = (SwitchPreference) findPreference(KEY_CELLULAR_FALLBACK);
115            // TODO: can this ever be null? The return value of avoidBadWifiConfig() can only
116            // change if the resources change, but if that happens the activity will be recreated...
117            if (pref != null) {
118                pref.setChecked(currentSetting);
119            }
120        }
121
122        mWifiAssistantPreference = (AppListSwitchPreference) findPreference(KEY_WIFI_ASSISTANT);
123        Collection<NetworkScorerAppManager.NetworkScorerAppData> scorers =
124                NetworkScorerAppManager.getAllValidScorers(context);
125        if (UserManager.get(context).isAdminUser() && !scorers.isEmpty()) {
126            mWifiAssistantPreference.setOnPreferenceChangeListener(this);
127            initWifiAssistantPreference(scorers);
128        } else if (mWifiAssistantPreference != null) {
129            getPreferenceScreen().removePreference(mWifiAssistantPreference);
130        }
131
132        ListPreference sleepPolicyPref = (ListPreference) findPreference(KEY_SLEEP_POLICY);
133        if (sleepPolicyPref != null) {
134            if (Utils.isWifiOnly(context)) {
135                sleepPolicyPref.setEntries(R.array.wifi_sleep_policy_entries_wifi_only);
136            }
137            sleepPolicyPref.setOnPreferenceChangeListener(this);
138            int value = Settings.Global.getInt(getContentResolver(),
139                    Settings.Global.WIFI_SLEEP_POLICY,
140                    Settings.Global.WIFI_SLEEP_POLICY_NEVER);
141            String stringValue = String.valueOf(value);
142            sleepPolicyPref.setValue(stringValue);
143            updateSleepPolicySummary(sleepPolicyPref, stringValue);
144        }
145    }
146
147    private void updateSleepPolicySummary(Preference sleepPolicyPref, String value) {
148        if (value != null) {
149            String[] values = getResources().getStringArray(R.array.wifi_sleep_policy_values);
150            final int summaryArrayResId = Utils.isWifiOnly(getActivity()) ?
151                    R.array.wifi_sleep_policy_entries_wifi_only : R.array.wifi_sleep_policy_entries;
152            String[] summaries = getResources().getStringArray(summaryArrayResId);
153            for (int i = 0; i < values.length; i++) {
154                if (value.equals(values[i])) {
155                    if (i < summaries.length) {
156                        sleepPolicyPref.setSummary(summaries[i]);
157                        return;
158                    }
159                }
160            }
161        }
162
163        sleepPolicyPref.setSummary("");
164        Log.e(TAG, "Invalid sleep policy value: " + value);
165    }
166
167    private boolean avoidBadWifiConfig() {
168        return getActivity().getResources().getInteger(
169                com.android.internal.R.integer.config_networkAvoidBadWifi) == 1;
170    }
171
172    private boolean avoidBadWifiCurrentSettings() {
173        return "1".equals(Settings.Global.getString(getContentResolver(),
174                Settings.Global.NETWORK_AVOID_BAD_WIFI));
175    }
176
177    @Override
178    public boolean onPreferenceTreeClick(Preference preference) {
179        String key = preference.getKey();
180
181        if (KEY_NOTIFY_OPEN_NETWORKS.equals(key)) {
182            Settings.Global.putInt(getContentResolver(),
183                    Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
184                    ((SwitchPreference) preference).isChecked() ? 1 : 0);
185        } else if (KEY_CELLULAR_FALLBACK.equals(key)) {
186            // On: avoid bad wifi. Off: prompt.
187            String settingName = Settings.Global.NETWORK_AVOID_BAD_WIFI;
188            Settings.Global.putString(getContentResolver(), settingName,
189                    ((SwitchPreference) preference).isChecked() ? "1" : null);
190        } else {
191            return super.onPreferenceTreeClick(preference);
192        }
193        return true;
194    }
195
196    @Override
197    public boolean onPreferenceChange(Preference preference, Object newValue) {
198        final Context context = getActivity();
199        String key = preference.getKey();
200
201        if (KEY_WIFI_ASSISTANT.equals(key)) {
202            NetworkScorerAppManager.NetworkScorerAppData wifiAssistant =
203                    NetworkScorerAppManager.getScorer(context, (String) newValue);
204            if (wifiAssistant == null) {
205                mNetworkScoreManager.setActiveScorer(null);
206                return true;
207            }
208
209            Intent intent = new Intent();
210            if (wifiAssistant.mConfigurationActivityClassName != null) {
211                // App has a custom configuration activity; launch that.
212                // This custom activity will be responsible for launching the system
213                // dialog.
214                intent.setClassName(wifiAssistant.mPackageName,
215                        wifiAssistant.mConfigurationActivityClassName);
216            } else {
217                // Fall back on the system dialog.
218                intent.setAction(NetworkScoreManager.ACTION_CHANGE_ACTIVE);
219                intent.putExtra(NetworkScoreManager.EXTRA_PACKAGE_NAME,
220                        wifiAssistant.mPackageName);
221            }
222
223            startActivity(intent);
224            // Don't update the preference widget state until the child activity returns.
225            // It will be updated in onResume after the activity finishes.
226            return false;
227        }
228
229        if (KEY_SLEEP_POLICY.equals(key)) {
230            try {
231                String stringValue = (String) newValue;
232                Settings.Global.putInt(getContentResolver(), Settings.Global.WIFI_SLEEP_POLICY,
233                        Integer.parseInt(stringValue));
234                updateSleepPolicySummary(preference, stringValue);
235            } catch (NumberFormatException e) {
236                Toast.makeText(context, R.string.wifi_setting_sleep_policy_error,
237                        Toast.LENGTH_SHORT).show();
238                return false;
239            }
240        }
241
242        return true;
243    }
244
245    private void refreshWifiInfo() {
246        final Context context = getActivity();
247        WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
248
249        Preference wifiMacAddressPref = findPreference(KEY_MAC_ADDRESS);
250        String macAddress = wifiInfo == null ? null : wifiInfo.getMacAddress();
251        wifiMacAddressPref.setSummary(!TextUtils.isEmpty(macAddress) ? macAddress
252                : context.getString(R.string.status_unavailable));
253        wifiMacAddressPref.setSelectable(false);
254
255        Preference wifiIpAddressPref = findPreference(KEY_CURRENT_IP_ADDRESS);
256        String ipAddress = Utils.getWifiIpAddresses(context);
257        wifiIpAddressPref.setSummary(ipAddress == null ?
258                context.getString(R.string.status_unavailable) : ipAddress);
259        wifiIpAddressPref.setSelectable(false);
260    }
261
262    private void initWifiAssistantPreference(
263            Collection<NetworkScorerAppManager.NetworkScorerAppData> scorers) {
264        int count = scorers.size();
265        String[] packageNames = new String[count];
266        int i = 0;
267        for (NetworkScorerAppManager.NetworkScorerAppData scorer : scorers) {
268            packageNames[i] = scorer.mPackageName;
269            i++;
270        }
271        mWifiAssistantPreference.setPackageNames(packageNames,
272                mNetworkScoreManager.getActiveScorerPackage());
273    }
274
275    @Override
276    protected int getMetricsCategory() {
277        return MetricsEvent.CONFIGURE_WIFI;
278    }
279
280    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
281        @Override
282        public void onReceive(Context context, Intent intent) {
283            String action = intent.getAction();
284            if (action.equals(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION) ||
285                action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
286                refreshWifiInfo();
287            }
288        }
289    };
290}
291