如何将 currentTimeMillis 转换为可读的日期格式? [英] How to transform currentTimeMillis to a readable date format?

问题描述

我想使用 currentTimeMillis 两次，这样我就可以计算持续时间，但我也想以用户可读的格式显示时间和日期.我遇到了麻烦，因为 currentTimeMillis 对计算很有用，但我看不到内置函数来转换为合适的时间或时间/日期.

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.

我用

android.text.format.DateFormat df = new android.text.format.DateFormat();
df.format("yyyy-MM-dd kk:mm:ss", new java.util.Date());

为了生成合适的时间和日期，我最终想做的是将结果 currentTimeMillis 值显示到 android.text.format.DateFormat df = new android.text 中.format.DateFormat();

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();

例如

android.text.format.DateFormat df = currentTimeMillis();

当我尝试时我得到

类型不匹配:无法从 long 转换为 DateFormat

Type mismatch: cannot convert from long to DateFormat

我试过使用一些强制转换，但不知道如何实现.

I've tried to use some casting but can't see how to accomplish this.

推荐答案

它会起作用.

long yourmilliseconds = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("MMM dd,yyyy HH:mm");    
Date resultdate = new Date(yourmilliseconds);
System.out.println(sdf.format(resultdate));

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