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Differences Between Calendar and Date in Android and how to eliminate the impact of Time Zone on Date operations
There are three common date operations in Android:
Date typeCalendar typeUnix TimestampAmong them, Unix timestamps are the most convenient and flexible in computing, and the efficiency is also high; while Date and Calendar are more convenient in some s
Recently sorted out the android-to get the network time, to obtain a specific time zone, time synchronization method. Specifically as follows:
Method One:
SimpleDateFormat DFF = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
Dff.settimezone (Timezone.gettimezone ("gmt+08"));
String ee = dff.format (new Date ());
This method gets a 24-hour result, and the month is correct.
This method does no
Reproduced from: http://blog.liaoxiaoqi.com /? P = 492
There are three common date operations in Android:
Date type
Calendar type
UNIX Timestamp
Among them, Unix timestamps are the most convenient and flexible in computing, and the efficiency is also high; while date and calendar are more convenient in some specific date computing. The simpledateformat class is often used for formatting during date conversion, including conver
In the Android JB version, the System/usr/share/zoneinfo directory Zoneinfo related 3 files are data files that are used to store time zone information for each country and region city. Since the time zone information in each country will change, for example, June 13, 2014, Russia announced that the national time zone
In the date and time settings in setting of Android, You can manually set the current time zone of the mobile phone after the automatic retrieval check is removed. After setting, the mobile phone will automatically make a Time Offset ~ Then, the call records and text message time display of the mobile phone will be automatically adjusted. This is the behavior on the AP. modifying this time
dynamic registered broadcast receivers must have an instance presentSet the system time zone: Alarmmanager Malarmmanager = (alarmmanager) getsystemservice (context.alarm_service);Malarmmanager.settimezone ("gmt+08:00");Setting the time zone requires adding the following permissions in Manifest.xml: --Package com.lzh.modeify;Import Java.util.Calendar;Import Java.util.Timer;Import
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