Mega Code Archive
GMT (UTC) Time Converter
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/*
* Copyright 2010 TYTung.
*
* 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 tyt.android.bigplanettracks.tracks;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
/**
* GMT (UTC) Time Converter.
*
* E.g.: GMTTime = "2009-10-09T00:37:22Z";
*
* @author TYTung
* @version 0.1
*/
public class MyTimeUtils {
/** "Fri 2009-10-09 08:37:22 GMT+0800" // TimeZone is Taipei */
// private static SimpleDateFormat LocalTimeFormatter = new SimpleDateFormat(
// "EEE yyyy-MM-dd HH:mm:ss zzz", Locale.US);
/** "Fri Oct 09 08:37:22 CST 2009" // TimeZone is Taipei, zzz=[GMT+0800 in Android | CST in Java] */
private static SimpleDateFormat LocalTimeFormatter = new SimpleDateFormat(
"EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
private static SimpleDateFormat GMTTimeFormatter = new SimpleDateFormat(
"yyyy-MM-dd'T'HH:mm:ss'Z'");
{
GMTTimeFormatter.setTimeZone(TimeZone.getTimeZone("GMT"));
}
public static boolean isGMTTimeFormat(String strGMTTime) {
boolean isValid = false;
try {
GMTTimeFormatter.parse(strGMTTime);
isValid = true;
} catch (ParseException e) {
}
if (strGMTTime.length() != 20)
isValid = false;
return isValid;
}
public static long getGMTTime(String strGMTTime) {
long millisecond = 0;
try {
millisecond = GMTTimeFormatter.parse(strGMTTime).getTime();
} catch (ParseException e) {
if (strGMTTime.length() > 0)
e.printStackTrace();
else
System.err.println(e.getMessage());
}
return millisecond;
}
public static long getLocalTime(String strLocalTime) {
long millisecond = 0;
try {
LocalTimeFormatter.setTimeZone(TimeZone.getDefault());
millisecond = LocalTimeFormatter.parse(strLocalTime).getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return millisecond;
}
public static String getLocalTimeString(String strGMTTime) {
String strLocalTime = null;
try {
GMTTimeFormatter.setTimeZone(TimeZone.getTimeZone("GMT"));
Date date = GMTTimeFormatter.parse(strGMTTime);
LocalTimeFormatter.setTimeZone(TimeZone.getDefault());
strLocalTime = LocalTimeFormatter.format(date);
} catch (ParseException e) {
e.printStackTrace();
}
return strLocalTime;
}
public static String getLocalTimeString(long millisecond) {
LocalTimeFormatter.setTimeZone(TimeZone.getDefault());
String strLocalTime = LocalTimeFormatter.format(millisecond);
return strLocalTime;
}
public static String getGMTTimeString(long millisecond) {
Calendar cal = Calendar.getInstance();
int zoneOffsetTime = cal.get(Calendar.ZONE_OFFSET) + cal.get(Calendar.DST_OFFSET);
long millisecondsUTC = millisecond - zoneOffsetTime;
GMTTimeFormatter.setTimeZone(TimeZone.getDefault());
String strGMTTime = GMTTimeFormatter.format(millisecondsUTC);
return strGMTTime;
}
public static String getTimeString(long millisecond) {
String timeString = "";
int totalSeconds = (int) millisecond / 1000;
int hours = totalSeconds / 3600;
int remainder = totalSeconds % 3600;
int minutes = remainder / 60;
int seconds = remainder % 60;
if (hours == 0) {
timeString = minutes + ":" + seconds;
} else {
timeString = hours + ":" + minutes + ":" + seconds;
}
return timeString;
}
private MyTimeUtils() {
}
}
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