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/*
* 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;
import android.content.ActivityNotFoundException;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.database.Cursor;
import android.net.Uri;
import android.util.Log;
/**
* Helper class to read and write the 'Use My Location' setting used by Google Apps (e.g. GoogleQSB,
* VoiceSearch).
*
* This class duplicates a small amount of functionality from GSF (Google Services Framework) to
* allow the open source Settings app to interface to the 'Use My Location' setting owned by GSF.
*/
public class GoogleLocationSettingHelper {
private static final String TAG = "GoogleLocationSettingHelper";
/**
* User has disagreed to use location for Google services.
*/
public static final int USE_LOCATION_FOR_SERVICES_OFF = 0;
/**
* User has agreed to use location for Google services.
*/
public static final int USE_LOCATION_FOR_SERVICES_ON = 1;
/**
* The user has neither agreed nor disagreed to use location for Google services yet.
*/
public static final int USE_LOCATION_FOR_SERVICES_NOT_SET = 2;
private static final String GOOGLE_SETTINGS_AUTHORITY = "com.google.settings";
private static final Uri GOOGLE_SETTINGS_CONTENT_URI =
Uri.parse("content://" + GOOGLE_SETTINGS_AUTHORITY + "/partner");
private static final String NAME = "name";
private static final String VALUE = "value";
private static final String USE_LOCATION_FOR_SERVICES = "use_location_for_services";
private static final String ACTION_SET_USE_LOCATION_FOR_SERVICES =
"com.google.android.gsf.action.SET_USE_LOCATION_FOR_SERVICES";
public static final String EXTRA_DISABLE_USE_LOCATION_FOR_SERVICES = "disable";
/**
* Determine if the 'Use My Location' setting is applicable on this device, i.e. if the
* activity used to enabled/disable it is present.
*/
public static boolean isAvailable(Context context) {
ResolveInfo ri = context.getPackageManager().resolveActivity(getSetUseLocationIntent(),
PackageManager.MATCH_DEFAULT_ONLY);
return ri != null;
}
private static Intent getSetUseLocationIntent() {
Intent i = new Intent(ACTION_SET_USE_LOCATION_FOR_SERVICES);
return i;
}
/**
* Get the current value for the 'Use value for location' setting.
* @return One of {@link #USE_LOCATION_FOR_SERVICES_NOT_SET},
* {@link #USE_LOCATION_FOR_SERVICES_OFF} or {@link #USE_LOCATION_FOR_SERVICES_ON}.
*/
public static int getUseLocationForServices(Context context) {
ContentResolver resolver = context.getContentResolver();
Cursor c = null;
String stringValue = null;
try {
c = resolver.query(GOOGLE_SETTINGS_CONTENT_URI, new String[] { VALUE }, NAME + "=?",
new String[] { USE_LOCATION_FOR_SERVICES }, null);
if (c != null && c.moveToNext()) {
stringValue = c.getString(0);
}
} catch (RuntimeException e) {
Log.w(TAG, "Failed to get 'Use My Location' setting", e);
} finally {
if (c != null) {
c.close();
}
}
if (stringValue == null) {
return USE_LOCATION_FOR_SERVICES_NOT_SET;
}
int value;
try {
value = Integer.parseInt(stringValue);
} catch (NumberFormatException nfe) {
value = USE_LOCATION_FOR_SERVICES_NOT_SET;
}
return value;
}
/**
* Change the value of the 'Use My Location' setting. This launches a GSF activity which has
* the permissions to actually make the change, prompting the user if necessary.
*/
public static void setUseLocationForServices(Context context, boolean use) {
Intent i = getSetUseLocationIntent();
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra(EXTRA_DISABLE_USE_LOCATION_FOR_SERVICES, !use);
try {
context.startActivity(i);
} catch (ActivityNotFoundException e) {
}
}
}
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