samples/browseable/SpeedTracker/Shared/src/com.example.android.wearable.speedtracker.common/Utils.java

/*
 * Copyright (C) 2014 Google Inc. All Rights Reserved.
 *
 * 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.example.android.wearable.speedtracker.common;

import java.util.Calendar;

/**
 * A utility class that is used in both the handset and wearable apps.
 */
public class Utils {

    /**
     * Builds a simple hash for a day by concatenating year and day of year together. Note that two
     * {@link java.util.Calendar} inputs that fall on the same day will be hashed to the same
     * string.
     */
    public static String getHashedDay(Calendar day) {
        return day.get(Calendar.YEAR) + "-" + day.get(Calendar.DAY_OF_YEAR);
    }

    private Utils() {
    }
}