Android Hour Format formatElapsedTime(StringBuilder recycle, String format, long hours, long minutes, long seconds)

Description

Fast formatting of h:mm:ss

License

Apache License

Declaration

private static String formatElapsedTime(StringBuilder recycle,
        String format, long hours, long minutes, long seconds) 

Method Source Code

/*//  w w  w .j  ava2  s  .c  om
 * Copyright (C) 2006 The Android Open Source Project
 *
 * 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.
 */

import com.android.internal.R;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import java.util.Calendar;
import java.util.Date;
import java.util.Formatter;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.TimeZone;

public class Main{
    private static final Object sLock = new Object();
    private static Configuration sLastConfig;
    private static java.text.DateFormat sStatusTimeFormat;
    private static String sElapsedFormatMMSS;
    private static String sElapsedFormatHMMSS;
    private static final String FAST_FORMAT_HMMSS = "%1$d:%2$02d:%3$02d";
    private static final String FAST_FORMAT_MMSS = "%1$02d:%2$02d";
    private static final char TIME_PADDING = '0';
    private static final char TIME_SEPARATOR = ':';
    /**
     * Formats an elapsed time in the form "MM:SS" or "H:MM:SS"
     * for display on the call-in-progress screen.
     * @param elapsedSeconds the elapsed time in seconds.
     */
    public static String formatElapsedTime(long elapsedSeconds) {
        return formatElapsedTime(null, elapsedSeconds);
    }
    /**
     * Formats an elapsed time in the form "MM:SS" or "H:MM:SS"
     * for display on the call-in-progress screen.
     * 
     * @param recycle {@link StringBuilder} to recycle, if possible
     * @param elapsedSeconds the elapsed time in seconds.
     */
    public static String formatElapsedTime(StringBuilder recycle,
            long elapsedSeconds) {
        initFormatStrings();

        long hours = 0;
        long minutes = 0;
        long seconds = 0;

        if (elapsedSeconds >= 3600) {
            hours = elapsedSeconds / 3600;
            elapsedSeconds -= hours * 3600;
        }
        if (elapsedSeconds >= 60) {
            minutes = elapsedSeconds / 60;
            elapsedSeconds -= minutes * 60;
        }
        seconds = elapsedSeconds;

        String result;
        if (hours > 0) {
            return formatElapsedTime(recycle, sElapsedFormatHMMSS, hours,
                    minutes, seconds);
        } else {
            return formatElapsedTime(recycle, sElapsedFormatMMSS, minutes,
                    seconds);
        }
    }
    /**
     * Fast formatting of h:mm:ss
     */
    private static String formatElapsedTime(StringBuilder recycle,
            String format, long hours, long minutes, long seconds) {
        if (FAST_FORMAT_HMMSS.equals(format)) {
            StringBuilder sb = recycle;
            if (sb == null) {
                sb = new StringBuilder(8);
            } else {
                sb.setLength(0);
            }
            sb.append(hours);
            sb.append(TIME_SEPARATOR);
            if (minutes < 10) {
                sb.append(TIME_PADDING);
            } else {
                sb.append(toDigitChar(minutes / 10));
            }
            sb.append(toDigitChar(minutes % 10));
            sb.append(TIME_SEPARATOR);
            if (seconds < 10) {
                sb.append(TIME_PADDING);
            } else {
                sb.append(toDigitChar(seconds / 10));
            }
            sb.append(toDigitChar(seconds % 10));
            return sb.toString();
        } else {
            return String.format(format, hours, minutes, seconds);
        }
    }
    /**
     * Fast formatting of m:ss
     */
    private static String formatElapsedTime(StringBuilder recycle,
            String format, long minutes, long seconds) {
        if (FAST_FORMAT_MMSS.equals(format)) {
            StringBuilder sb = recycle;
            if (sb == null) {
                sb = new StringBuilder(8);
            } else {
                sb.setLength(0);
            }
            if (minutes < 10) {
                sb.append(TIME_PADDING);
            } else {
                sb.append(toDigitChar(minutes / 10));
            }
            sb.append(toDigitChar(minutes % 10));
            sb.append(TIME_SEPARATOR);
            if (seconds < 10) {
                sb.append(TIME_PADDING);
            } else {
                sb.append(toDigitChar(seconds / 10));
            }
            sb.append(toDigitChar(seconds % 10));
            return sb.toString();
        } else {
            return String.format(format, minutes, seconds);
        }
    }
    private static void initFormatStrings() {
        synchronized (sLock) {
            initFormatStringsLocked();
        }
    }
    private static char toDigitChar(long digit) {
        return (char) (digit + '0');
    }
    private static void initFormatStringsLocked() {
        Resources r = Resources.getSystem();
        Configuration cfg = r.getConfiguration();
        if (sLastConfig == null || !sLastConfig.equals(cfg)) {
            sLastConfig = cfg;
            sStatusTimeFormat = java.text.DateFormat
                    .getTimeInstance(java.text.DateFormat.SHORT);
            sElapsedFormatMMSS = r
                    .getString(com.android.internal.R.string.elapsed_time_short_format_mm_ss);
            sElapsedFormatHMMSS = r
                    .getString(com.android.internal.R.string.elapsed_time_short_format_h_mm_ss);
        }
    }
}

Related

1. getReminderReadableTime(int hour, int minute)
2. getCurrentHour()
3. getDateByAddHour(String datetime, int minute)
4. getDateByAddFltHour(float flt)
5. homiToString(int hour, int minute)
6. time2String(int hour, int minute)