1 /*
2  * Copyright (C) 2014 Google Inc. All Rights Reserved.
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 
17 package com.example.android.wearable.speedtracker.common;
18 
19 import java.util.Calendar;
20 
21 /**
22  * A utility class that is used in both the handset and wearable apps.
23  */
24 public class Utils {
25 
26     /**
27      * Builds a simple hash for a day by concatenating year and day of year together. Note that two
28      * {@link java.util.Calendar} inputs that fall on the same day will be hashed to the same
29      * string.
30      */
getHashedDay(Calendar day)31     public static String getHashedDay(Calendar day) {
32         return day.get(Calendar.YEAR) + "-" + day.get(Calendar.DAY_OF_YEAR);
33     }
34 
Utils()35     private Utils() {
36     }
37 }
38