如何设置从Date对象的Android天文台基地的时间? [英] How to set Android Chronometer base time from Date object?
问题描述
我已经得到了从特定时间开始计时表的问题。
有一个Date对象我希望我的天文台表开始从:
日期D =新的日期(); //现在,只是举例
chronometer.setBase(d.getTime()); //的D值长
Log.d(日期,d.getTime()的时间为[+ d.getTime()+]);
Log.d(代下:,chronometer.getBase()是[+ chronometer.getBase()+]);
//让我们从官方样片打印出来elapsedRealtime
Log.d(代下:,SystemClock.elapsedRealtime()是[+ SystemClock.elapsedRealtime()+]);
输出:
06-02 13:35:23.025:D /日期:(928):d.getTime()时间为[1338644123032]
06-02 13:35:23.037:D /代上:(928):chronometer.getBase()为[1338644123032]
06-02 13:35:23.037:D /代上:(928):SystemClock.elapsedRealtime()为[11624388]
其实,为什么时间differes这一长期价值(11624388和1338644123032)?
当我开始我的天文台从基本
chronometer.setBase(SystemClock.elapsedRealtime());
- 它总是工作正常(00:00和上升)
但是,当我尝试设置(昨日远东)的日期从过去的日期:
chronometer.setBase(yesterday.getTime());
- 它表明00:0(并改变每一秒的最新字符到),*,/和其他
你能请告知我怎么能记时计基地设置为Date对象?
其实,为什么时间differes这一长期价值(11624388和1338644123032)?
块引用>
SystemClock.elapsedRealtime()
是毫秒数,因为设备已打开。其他值都基于的System.currentTimeMillis的()
,因为Unix纪元的毫秒数。
你能请告知我怎么能记时计基地设置为Date对象?
块引用>您没有。这不是什么
天文台
是。天文台表的文档
:
您可以给它在elapsedRealtime()时基开始时间,并从该计数,或者如果你不给它一个基地的时候,它会使用在你调用的start()的时间。
块引用>I've got an issue with starting chronometer from the specific time. There is a Date object I want my chronometer start from:
Date d = new Date(); //now, just for example chronometer.setBase(d.getTime()); //long value of d Log.d("Date: " , "d.getTime() time is [" + d.getTime() +"]"); Log.d("Chron: " , "chronometer.getBase() is [" + chronometer.getBase() +"]"); //let's print out elapsedRealtime from official sample Log.d("Chron: " , "SystemClock.elapsedRealtime() is [" + SystemClock.elapsedRealtime() +"]");
Output:
06-02 13:35:23.025: D/Date:(928): d.getTime() time is [1338644123032] 06-02 13:35:23.037: D/Chron:(928): chronometer.getBase() is [1338644123032] 06-02 13:35:23.037: D/Chron:(928): SystemClock.elapsedRealtime() is [11624388]
Actually, why this long values of time differes (11624388 and 1338644123032)?
When I start my chronometer from base
chronometer.setBase(SystemClock.elapsedRealtime());
- it always works fine ( "00:00" and rising)
But when I try to set the date from a past Date (f.e. yesterday):
chronometer.setBase(yesterday.getTime());
- it shows "00:0(" and changes every second the latest char to ")", "*", "/" and others
Could you please advise how can I set the chronometer base to a Date object?
解决方案Actually, why this long values of time differes (11624388 and 1338644123032)?
SystemClock.elapsedRealtime()
is the number of milliseconds since the device was turned on. The other values are based off ofSystem.currentTimeMillis()
, the number of milliseconds since the Unix epoch.Could you please advise how can I set the chronometer base to a Date object?
You don't. That is not what
Chronometer
is for. Quoting the documentation forChronometer
:You can give it a start time in the elapsedRealtime() timebase, and it counts up from that, or if you don't give it a base time, it will use the time at which you call start().
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