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 */
16package com.android.incallui;
17
18import android.location.Address;
19
20/**
21 * Superclass for a helper class to get the current location and distance to other locations.
22 */
23public abstract class DistanceHelper {
24    public static final float DISTANCE_NOT_FOUND = -1;
25    public static final float MILES_PER_METER = (float) 0.000621371192;
26    public static final float KILOMETERS_PER_METER = (float) 0.001;
27
28    public interface Listener {
29        public void onLocationReady();
30    }
31
32    public void cleanUp() {}
33
34    public float calculateDistance(Address address) {
35        return DISTANCE_NOT_FOUND;
36    }
37}
38