CellBroadcastSettings.java revision 57273ebfa13f96bf5aba9902b70e2b179fec9e4c 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5 * use this file except in compliance with the License. You may obtain a copy of
6 * 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, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations under
14 * the License.
15 */
16
17package com.android.cellbroadcastreceiver;
18
19import android.content.res.Resources;
20import android.os.Bundle;
21import android.preference.ListPreference;
22import android.preference.Preference;
23import android.preference.PreferenceActivity;
24import android.preference.PreferenceCategory;
25import android.preference.PreferenceFragment;
26import android.preference.PreferenceScreen;
27import android.provider.Settings;
28
29/**
30 * Settings activity for the cell broadcast receiver.
31 */
32public class CellBroadcastSettings extends PreferenceActivity {
33
34    // Preference key for whether to enable emergency notifications (default enabled).
35    public static final String KEY_ENABLE_EMERGENCY_ALERTS = "enable_emergency_alerts";
36
37    // Duration of alert sound (in seconds).
38    public static final String KEY_ALERT_SOUND_DURATION = "alert_sound_duration";
39
40    // Default alert duration (in seconds).
41    public static final String ALERT_SOUND_DEFAULT_DURATION = "4";
42
43    // Enable vibration on alert (unless master volume is silent).
44    public static final String KEY_ENABLE_ALERT_VIBRATE = "enable_alert_vibrate";
45
46    // Speak contents of alert after playing the alert sound.
47    public static final String KEY_ENABLE_ALERT_SPEECH = "enable_alert_speech";
48
49    // Preference category for emergency alert and CMAS settings.
50    public static final String KEY_CATEGORY_ALERT_SETTINGS = "category_alert_settings";
51
52    // Preference category for ETWS related settings.
53    public static final String KEY_CATEGORY_ETWS_SETTINGS = "category_etws_settings";
54
55    // Whether to display CMAS extreme threat notifications (default is enabled).
56    public static final String KEY_ENABLE_CMAS_EXTREME_THREAT_ALERTS =
57            "enable_cmas_extreme_threat_alerts";
58
59    // Whether to display CMAS severe threat notifications (default is enabled).
60    public static final String KEY_ENABLE_CMAS_SEVERE_THREAT_ALERTS =
61            "enable_cmas_severe_threat_alerts";
62
63    // Whether to display CMAS amber alert messages (default is enabled).
64    public static final String KEY_ENABLE_CMAS_AMBER_ALERTS = "enable_cmas_amber_alerts";
65
66    // Preference category for development settings (enabled by settings developer options toggle).
67    public static final String KEY_CATEGORY_DEV_SETTINGS = "category_dev_settings";
68
69    // Whether to display ETWS test messages (default is disabled).
70    public static final String KEY_ENABLE_ETWS_TEST_ALERTS = "enable_etws_test_alerts";
71
72    // Whether to display CMAS monthly test messages (default is disabled).
73    public static final String KEY_ENABLE_CMAS_TEST_ALERTS = "enable_cmas_test_alerts";
74
75    // Preference category for Brazil specific settings.
76    public static final String KEY_CATEGORY_BRAZIL_SETTINGS = "category_brazil_settings";
77
78    // Preference key for whether to enable channel 50 notifications
79    // Enabled by default for phones sold in Brazil, otherwise this setting may be hidden.
80    public static final String KEY_ENABLE_CHANNEL_50_ALERTS = "enable_channel_50_alerts";
81
82    // Preference key for initial opt-in/opt-out dialog.
83    public static final String KEY_SHOW_CMAS_OPT_OUT_DIALOG = "show_cmas_opt_out_dialog";
84
85    @Override
86    public void onCreate(Bundle savedInstanceState) {
87        super.onCreate(savedInstanceState);
88
89        // Display the fragment as the main content.
90        getFragmentManager().beginTransaction().replace(android.R.id.content,
91                new CellBroadcastSettingsFragment()).commit();
92    }
93
94    /**
95     * New fragment-style implementation of preferences.
96     */
97    public static class CellBroadcastSettingsFragment extends PreferenceFragment {
98
99        @Override
100        public void onCreate(Bundle savedInstanceState) {
101            super.onCreate(savedInstanceState);
102
103            // Load the preferences from an XML resource
104            addPreferencesFromResource(R.xml.preferences);
105
106            PreferenceScreen preferenceScreen = getPreferenceScreen();
107
108            // Handler for settings that require us to reconfigure enabled channels in radio
109            Preference.OnPreferenceChangeListener startConfigServiceListener =
110                    new Preference.OnPreferenceChangeListener() {
111                        @Override
112                        public boolean onPreferenceChange(Preference pref, Object newValue) {
113                            CellBroadcastReceiver.startConfigService(pref.getContext());
114                            return true;
115                        }
116                    };
117
118            // Show extra settings when developer options is enabled in settings.
119            boolean enableDevSettings = Settings.Global.getInt(getActivity().getContentResolver(),
120                    Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) != 0;
121
122            Resources res = getResources();
123            boolean showEtwsSettings = res.getBoolean(R.bool.show_etws_settings);
124
125            // Emergency alert preference category (general and CMAS preferences).
126            PreferenceCategory alertCategory = (PreferenceCategory)
127                    findPreference(KEY_CATEGORY_ALERT_SETTINGS);
128
129            // Show alert settings and ETWS categories for ETWS builds and developer mode.
130            if (enableDevSettings || showEtwsSettings) {
131                // enable/disable all alerts
132                Preference enablePwsAlerts = findPreference(KEY_ENABLE_EMERGENCY_ALERTS);
133                if (enablePwsAlerts != null) {
134                    enablePwsAlerts.setOnPreferenceChangeListener(startConfigServiceListener);
135                }
136
137                // alert sound duration
138                ListPreference duration = (ListPreference) findPreference(KEY_ALERT_SOUND_DURATION);
139                duration.setSummary(duration.getEntry());
140                duration.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
141                    @Override
142                    public boolean onPreferenceChange(Preference pref, Object newValue) {
143                        final ListPreference listPref = (ListPreference) pref;
144                        final int idx = listPref.findIndexOfValue((String) newValue);
145                        listPref.setSummary(listPref.getEntries()[idx]);
146                        return true;
147                    }
148                });
149            } else {
150                // Remove general emergency alert preference items (not shown for CMAS builds).
151                alertCategory.removePreference(findPreference(KEY_ENABLE_EMERGENCY_ALERTS));
152                alertCategory.removePreference(findPreference(KEY_ALERT_SOUND_DURATION));
153                alertCategory.removePreference(findPreference(KEY_ENABLE_ALERT_SPEECH));
154                // Remove ETWS preference category.
155                preferenceScreen.removePreference(findPreference(KEY_CATEGORY_ETWS_SETTINGS));
156            }
157
158            if (!res.getBoolean(R.bool.show_cmas_settings)) {
159                // Remove CMAS preference items in emergency alert category.
160                alertCategory.removePreference(
161                        findPreference(KEY_ENABLE_CMAS_EXTREME_THREAT_ALERTS));
162                alertCategory.removePreference(
163                        findPreference(KEY_ENABLE_CMAS_SEVERE_THREAT_ALERTS));
164                alertCategory.removePreference(findPreference(KEY_ENABLE_CMAS_AMBER_ALERTS));
165            }
166            if (!res.getBoolean(R.bool.show_brazil_settings)) {
167                preferenceScreen.removePreference(findPreference(KEY_CATEGORY_BRAZIL_SETTINGS));
168            }
169            if (!enableDevSettings) {
170                preferenceScreen.removePreference(findPreference(KEY_CATEGORY_DEV_SETTINGS));
171            }
172
173            Preference enableChannel50Alerts = findPreference(KEY_ENABLE_CHANNEL_50_ALERTS);
174            if (enableChannel50Alerts != null) {
175                enableChannel50Alerts.setOnPreferenceChangeListener(startConfigServiceListener);
176            }
177        }
178    }
179}
180