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  */
16 
17 package com.android.settings.location;
18 
19 import android.provider.Settings.Global;
20 import android.support.v14.preference.SwitchPreference;
21 import android.support.v7.preference.Preference;
22 import android.support.v7.preference.PreferenceScreen;
23 
24 import com.android.internal.logging.MetricsProto.MetricsEvent;
25 import com.android.settings.R;
26 import com.android.settings.SettingsPreferenceFragment;
27 
28 /**
29  * A page that configures the background scanning settings for Wi-Fi and Bluetooth.
30  */
31 public class ScanningSettings extends SettingsPreferenceFragment {
32     private static final String KEY_WIFI_SCAN_ALWAYS_AVAILABLE = "wifi_always_scanning";
33     private static final String KEY_BLUETOOTH_SCAN_ALWAYS_AVAILABLE = "bluetooth_always_scanning";
34 
35     @Override
getMetricsCategory()36     protected int getMetricsCategory() {
37         return MetricsEvent.LOCATION_SCANNING;
38     }
39 
40     @Override
onResume()41     public void onResume() {
42         super.onResume();
43         createPreferenceHierarchy();
44     }
45 
createPreferenceHierarchy()46     private PreferenceScreen createPreferenceHierarchy() {
47         PreferenceScreen root = getPreferenceScreen();
48         if (root != null) {
49             root.removeAll();
50         }
51         addPreferencesFromResource(R.xml.location_scanning);
52         root = getPreferenceScreen();
53         initPreferences();
54         return root;
55     }
56 
initPreferences()57     private void initPreferences() {
58         final SwitchPreference wifiScanAlwaysAvailable =
59             (SwitchPreference) findPreference(KEY_WIFI_SCAN_ALWAYS_AVAILABLE);
60         wifiScanAlwaysAvailable.setChecked(Global.getInt(getContentResolver(),
61                     Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1);
62         final SwitchPreference bleScanAlwaysAvailable =
63             (SwitchPreference) findPreference(KEY_BLUETOOTH_SCAN_ALWAYS_AVAILABLE);
64         bleScanAlwaysAvailable.setChecked(Global.getInt(getContentResolver(),
65                     Global.BLE_SCAN_ALWAYS_AVAILABLE, 0) == 1);
66     }
67 
68     @Override
onPreferenceTreeClick(Preference preference)69     public boolean onPreferenceTreeClick(Preference preference) {
70         String key = preference.getKey();
71         if (KEY_WIFI_SCAN_ALWAYS_AVAILABLE.equals(key)) {
72             Global.putInt(getContentResolver(),
73                     Global.WIFI_SCAN_ALWAYS_AVAILABLE,
74                     ((SwitchPreference) preference).isChecked() ? 1 : 0);
75         } else if (KEY_BLUETOOTH_SCAN_ALWAYS_AVAILABLE.equals(key)) {
76             Global.putInt(getContentResolver(),
77                     Global.BLE_SCAN_ALWAYS_AVAILABLE,
78                     ((SwitchPreference) preference).isChecked() ? 1 : 0);
79         } else {
80             return super.onPreferenceTreeClick(preference);
81         }
82         return true;
83     }
84 }
85