在上面的代码中,我想将服务器的时区 (GMT-02:00) 的日期转换为我的设备 (GMT-03:00) 的时区.但我总是有相同的服务器日期.我做错了什么?
In that code above I want to transform a Date by the TimeZone of Server (GMT-02:00) to TimeZone from my Device (GMT-03:00). But I Always have the same Date of the server. What I doing wrong?
时区 timeZoneServer = TimeZone.getTimeZone(timeZoneServerString);长时间 = new Long(Long.valueOf(timeInMilis));
TimeZone timeZoneServer = TimeZone.getTimeZone(timeZoneServerString); Long time = new Long(Long.valueOf(timeInMilis));
Calendar calendarDateServer = Calendar.getInstance(timeZoneServer);
calendarDateServer.setTimeInMillis(time);
long miliServer = calendarDateServer.getTimeInMillis();
TimeZone timeZoneMeu = TimeZone.getDefault();
Calendar meuCalendario = new GregorianCalendar();
meuCalendario.setTimeZone(timeZoneMeu);
meuCalendario.setTimeInMillis(miliServer);
Date transformedDate = meuCalendario.getTime();
return transformedDate;
我做错了什么?
您假设 Date
有一个时区作为开始.它没有.Calendar
可以,但 Date
自 Unix 纪元以来只有 毫秒.它不知道日历系统或时区.这只是一个时间点.
You're assuming that a Date
has a time zone to start with. It doesn't. A Calendar
does, but a Date
is just milliseconds since the Unix epoch. It doesn't know about calendar systems or time zones. It's just a point in time.
不清楚你想对结果做什么 - 但如果它是格式化显示的问题,只需使用 SimpleDateFormat
并在 that 上设置时区而是.
It's not clear what you want to do with the result - but if it's a matter of formatting it for display, just use SimpleDateFormat
and set the time zone on that instead.
我还强烈建议您使用 Joda Time 而不是内置类型...这是一个更更明智的 API.
I would also strongly recommend that you use Joda Time instead of the built-in types... it's a much more sensible API.
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