src/com/android/settings/location/LocationPreferenceController.java

/*
 * Copyright (C) 2017 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.location;

import android.content.Context;
import android.provider.Settings.Secure;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.PreferenceController;

public class LocationPreferenceController extends PreferenceController {

    private static final String KEY_LOCATION = "location";
    private Preference mPreference;

    public LocationPreferenceController(Context context) {
        super(context);
    }

    @Override
    public void displayPreference(PreferenceScreen screen) {
        super.displayPreference(screen);
        mPreference = screen.findPreference(KEY_LOCATION);
    }

    @Override
    public void updateState(Preference preference) {
        preference.setSummary(getLocationSummary(mContext));
    }

    @Override
    public String getPreferenceKey() {
        return KEY_LOCATION;
    }

    @Override
    public boolean isAvailable() {
        return true;
    }

    public void updateSummary() {
        updateState(mPreference);
    }

    public static String getLocationSummary(Context context) {
        int mode = Secure.getInt(context.getContentResolver(),
            Secure.LOCATION_MODE, Secure.LOCATION_MODE_OFF);
        if (mode != Secure.LOCATION_MODE_OFF) {
            return context.getString(R.string.location_on_summary,
                context.getString(getLocationString(mode)));
        }
        return context.getString(R.string.location_off_summary);
    }

    public static int getLocationString(int mode) {
        switch (mode) {
            case Secure.LOCATION_MODE_OFF:
                return R.string.location_mode_location_off_title;
            case Secure.LOCATION_MODE_SENSORS_ONLY:
                return R.string.location_mode_sensors_only_title;
            case Secure.LOCATION_MODE_BATTERY_SAVING:
                return R.string.location_mode_battery_saving_title;
            case Secure.LOCATION_MODE_HIGH_ACCURACY:
                return R.string.location_mode_high_accuracy_title;
        }
        return 0;
    }

}