计算时长 [英] Calculate Duration

问题描述

我有一个小机器人的问题，我有一个要求，有一个计时器来计算时间的特定活动是开到一定的按钮，在活动被点击，活动只是多长时间是开放的持续时间。虽然谷歌搜索周围，我发现TimerTask的，但这似乎只能虽然运行一个线程一定的时间间隔和doesent似乎非常适合从我小的Andr​​oid体验

I have a small android problem, I have a requirement to have a timer to calculate the duration from the time a specific activity was open till a certain button in that activity is clicked, simply how long the activity was open. While googling around I found TimerTask but this seems to run a thread for a certain interval only though and doesent seem ideal for the job from my little Android experience

如何计算时间你知道吗？ preferably在一个非常简单的方式

Any idea on how to calculate the duration? Preferably in a very simple manner

任何帮助是非常欢迎的。

Any help is very welcome

问候， MilindaD

Regards, MilindaD

推荐答案

只需使用<一个href="http://developer.android.com/reference/java/lang/System.html#currentTimeMillis%28%29"><$c$c>System.currentTimeMillis()到当活动启动和停止拍摄的时​​间。例如：

Just use System.currentTimeMillis() to capture the time when the activity starts and stops. E.g.:

long startTime = System.currentTimeMillis();
// wait for activity here
long endTime = System.currentTimeMillis();
long seconds = (endTime - startTime) / 1000;

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