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 package com.android.incallui;
17 
18 import android.location.Address;
19 
20 /**
21  * Superclass for a helper class to get the current location and distance to other locations.
22  */
23 public 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 {
onLocationReady()29         public void onLocationReady();
30     }
31 
cleanUp()32     public void cleanUp() {}
33 
calculateDistance(Address address)34     public float calculateDistance(Address address) {
35         return DISTANCE_NOT_FOUND;
36     }
37 }
38