/*
* Copyright (C) 2011 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;
import android.content.ContentQueryMap;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.location.LocationManager;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.PreferenceScreen;
import android.provider.Settings;
import java.util.Observable;
import java.util.Observer;
/**
* Gesture lock pattern settings.
*/
public class LocationSettings extends SettingsPreferenceFragment
implements OnPreferenceChangeListener {
// Location Settings
private static final String KEY_LOCATION_NETWORK = "location_network";
private static final String KEY_LOCATION_GPS = "location_gps";
private static final String KEY_ASSISTED_GPS = "assisted_gps";
private static final String KEY_USE_LOCATION = "location_use_for_services";
private CheckBoxPreference mNetwork;
private CheckBoxPreference mGps;
private CheckBoxPreference mAssistedGps;
private CheckBoxPreference mUseLocation;
// These provide support for receiving notification when Location Manager settings change.
// This is necessary because the Network Location Provider can change settings
// if the user does not confirm enabling the provider.
private ContentQueryMap mContentQueryMap;
private Observer mSettingsObserver;
@Override
public void onStart() {
super.onStart();
// listen for Location Manager settings changes
Cursor settingsCursor = getContentResolver().query(Settings.Secure.CONTENT_URI, null,
"(" + Settings.System.NAME + "=?)",
new String[]{Settings.Secure.LOCATION_PROVIDERS_ALLOWED},
null);
mContentQueryMap = new ContentQueryMap(settingsCursor, Settings.System.NAME, true, null);
}
@Override
public void onStop() {
super.onStop();
if (mSettingsObserver != null) {
mContentQueryMap.deleteObserver(mSettingsObserver);
}
}
private PreferenceScreen createPreferenceHierarchy() {
PreferenceScreen root = getPreferenceScreen();
if (root != null) {
root.removeAll();
}
addPreferencesFromResource(R.xml.location_settings);
root = getPreferenceScreen();
mNetwork = (CheckBoxPreference) root.findPreference(KEY_LOCATION_NETWORK);
mGps = (CheckBoxPreference) root.findPreference(KEY_LOCATION_GPS);
mAssistedGps = (CheckBoxPreference) root.findPreference(KEY_ASSISTED_GPS);
if (GoogleLocationSettingHelper.isAvailable(getActivity())) {
// GSF present, Add setting for 'Use My Location'
CheckBoxPreference useLocation = new CheckBoxPreference(getActivity());
useLocation.setKey(KEY_USE_LOCATION);
useLocation.setTitle(R.string.use_location_title);
useLocation.setSummary(R.string.use_location_summary);
useLocation.setChecked(
GoogleLocationSettingHelper.getUseLocationForServices(getActivity())
== GoogleLocationSettingHelper.USE_LOCATION_FOR_SERVICES_ON);
useLocation.setPersistent(false);
useLocation.setOnPreferenceChangeListener(this);
getPreferenceScreen().addPreference(useLocation);
mUseLocation = useLocation;
}
// Change the summary for wifi-only devices
if (Utils.isWifiOnly(getActivity())) {
mNetwork.setSummaryOn(R.string.location_neighborhood_level_wifi);
}
return root;
}
@Override
public void onResume() {
super.onResume();
// Make sure we reload the preference hierarchy since some of these settings
// depend on others...
createPreferenceHierarchy();
updateLocationToggles();
if (mSettingsObserver == null) {
mSettingsObserver = new Observer() {
public void update(Observable o, Object arg) {
updateLocationToggles();
}
};
mContentQueryMap.addObserver(mSettingsObserver);
}
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (preference == mNetwork) {
Settings.Secure.setLocationProviderEnabled(getContentResolver(),
LocationManager.NETWORK_PROVIDER, mNetwork.isChecked());
} else if (preference == mGps) {
boolean enabled = mGps.isChecked();
Settings.Secure.setLocationProviderEnabled(getContentResolver(),
LocationManager.GPS_PROVIDER, enabled);
if (mAssistedGps != null) {
mAssistedGps.setEnabled(enabled);
}
} else if (preference == mAssistedGps) {
Settings.Secure.putInt(getContentResolver(), Settings.Secure.ASSISTED_GPS_ENABLED,
mAssistedGps.isChecked() ? 1 : 0);
} else {
// If we didn't handle it, let preferences handle it.
return super.onPreferenceTreeClick(preferenceScreen, preference);
}
return true;
}
/*
* Creates toggles for each available location provider
*/
private void updateLocationToggles() {
ContentResolver res = getContentResolver();
boolean gpsEnabled = Settings.Secure.isLocationProviderEnabled(
res, LocationManager.GPS_PROVIDER);
mNetwork.setChecked(Settings.Secure.isLocationProviderEnabled(
res, LocationManager.NETWORK_PROVIDER));
mGps.setChecked(gpsEnabled);
if (mAssistedGps != null) {
mAssistedGps.setChecked(Settings.Secure.getInt(res,
Settings.Secure.ASSISTED_GPS_ENABLED, 2) == 1);
mAssistedGps.setEnabled(gpsEnabled);
}
}
/**
* see confirmPatternThenDisableAndClear
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
createPreferenceHierarchy();
}
public boolean onPreferenceChange(Preference preference, Object value) {
if (preference == mUseLocation) {
boolean newValue = (value == null ? false : (Boolean) value);
GoogleLocationSettingHelper.setUseLocationForServices(getActivity(), newValue);
// We don't want to change the value immediately here, since the user may click
// disagree in the dialog that pops up. When the activity we just launched exits, this
// activity will be restated and the new value re-read, so the checkbox will get its
// new value then.
return false;
}
return true;
}
}