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 { 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
