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I want to use currentTimeMillis
twice so I can calculate a duration but I also want to display Time and Date in user readable format. I'm having trouble as currentTimeMillis
is good for the calculation but I can't see a built in function to convert to nice time or time/date.
我想要使用currentTimeMillis两次,这样我可以计算一个持续时间,但是我也想用用户可读的格式显示时间和日期。我遇到了麻烦,因为currentTimeMillis对计算很好,但是我看不到一个内置函数可以转换成好时间或时间/日期。
I use
我使用
android.text.format.DateFormat df = new android.text.format.DateFormat();
df.format("yyyy-MM-dd kk:mm:ss", new java.util.Date());
for producing nice time and date and what I'd ultimately like to do is show my resulting currentTimeMillis
value into the android.text.format.DateFormat df = new android.text.format.DateFormat();
为了生成漂亮的时间和日期,我最终想要做的是将产生的currentTimeMillis值显示到android.text.format中。DateFormat df =新的android.text.format.DateFormat();
e.g.
如。
android.text.format.DateFormat df = currentTimeMillis();
when I try I get
当我尝试的时候
Type mismatch: cannot convert from long to DateFormat
类型不匹配:不能从long转换为DateFormat
I've tried to use some casting but can't see how to accomplish this.
我试过使用一些施法,但是我不知道该怎么做。
2 个解决方案
#1
111
It will work.
它将工作。
long yourmilliseconds = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("MMM dd,yyyy HH:mm");
Date resultdate = new Date(yourmilliseconds);
System.out.println(sdf.format(resultdate));
#2
31
There is a simpler way in Android
Android有一个更简单的方法
DateFormat.getInstance().format(currentTimeMillis);
Moreover, Date is deprecated, so use DateFormat class.
此外,不赞成使用Date,所以使用DateFormat类。
DateFormat.getDateInstance().format(new Date(0));
DateFormat.getDateTimeInstance().format(new Date(0));
DateFormat.getTimeInstance().format(new Date(0));
The above three lines will give:
以上三行将给出:
Dec 31, 1969
Dec 31, 1969 4:00:00 PM
4:00:00 PM 12:00:00 AM
#1
111
It will work.
它将工作。
long yourmilliseconds = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("MMM dd,yyyy HH:mm");
Date resultdate = new Date(yourmilliseconds);
System.out.println(sdf.format(resultdate));
#2
31
There is a simpler way in Android
Android有一个更简单的方法
DateFormat.getInstance().format(currentTimeMillis);
Moreover, Date is deprecated, so use DateFormat class.
此外,不赞成使用Date,所以使用DateFormat类。
DateFormat.getDateInstance().format(new Date(0));
DateFormat.getDateTimeInstance().format(new Date(0));
DateFormat.getTimeInstance().format(new Date(0));
The above three lines will give:
以上三行将给出:
Dec 31, 1969
Dec 31, 1969 4:00:00 PM
4:00:00 PM 12:00:00 AM