检测时，应用程序空闲的机器人 [英] Detect when application is idle in Android

问题描述

我开发，将运行在Kiosk模式的应用程序。在本申请中，如果用户没有在5分钟内的应用进行任何操作，应用程序将显示的屏幕保护程序是应用程序的标识。

I am developing an application that will be running in Kiosk Mode. In this application, if the user didn't do anything in the application within 5 minutes, the application will show a screen saver that is the logo of the application.

我的问题是，我怎么能$ 5分钟内检测空闲C $ C吗？

推荐答案

我想你可以使用<一个href="http://developer.android.com/reference/android/app/Activity.html#dispatchTouchEvent(android.view.MotionEvent)" rel="nofollow">http://developer.android.com/reference/android/app/Activity.html#dispatchTouchEvent(android.view.MotionEvent)和<一href="http://developer.android.com/reference/android/app/Activity.html#dispatchKeyEvent(android.view.KeyEvent)" rel="nofollow">http://developer.android.com/reference/android/app/Activity.html#dispatchKeyEvent(android.view.KeyEvent)在你的应用程序设置一个时间戳每次一个userinteraction发生（简单地重写方法并返回false在年底这样的事件将被传递到底层的视图） - 那么你可以使用某种类型的计时器其检查的最后一个时间戳互动recurringly并触发屏幕保护程序，如果你的5分钟空闲时间都达到了。

I think you could use http://developer.android.com/reference/android/app/Activity.html#dispatchTouchEvent(android.view.MotionEvent) and http://developer.android.com/reference/android/app/Activity.html#dispatchKeyEvent(android.view.KeyEvent) in your App to set a timestamp everytime a userinteraction takes place (simply override the methods and return false at the end so that the events will be propagated to underlying views) - then you can use some kind of timer which checks for the last timestamp of interaction recurringly and trigger your screen saver if your 5 minutes IDLE time are reached.

因此​​，在一个活动，你只需重写这样前面提到的方法：

So in an Activity you simply override the before mentioned Methods like this:

@Override
public boolean dispatchTouchEvent (MotionEvent ev) {
   timestamp = System.getCurrentTimeMilis();
   return false; // return false to indicate that the event hasn't been handled yet
}

在dispatchKeyEvent和其他方法，你可以重写，以确定用户的活动应该非常相似。

The dispatchKeyEvent and the other methods which you can override to determine user-activity should work fairly similar.

如果你使用一个以上的活动，你可能要创建延伸活动的基类，并覆盖所有dispatchXXXEvent要处理，哪些是你比你的所有活动的基类使用。但我想你的实现细节可能会有点超出范围的实际问题：）

If you're using more than one Activity you may want to create a base class which extends Activity and Override all the dispatchXXXEvent you want to handle and which you than use as base class of all your Activities. But I guess the details of your implementation may be a little bit out of scope for the actual question :)

有关定时器的不同的可能性，你可以在这里找到有用的信息：调度重复任务的机器人

For the different possibilities of timers you may find useful info here: Scheduling recurring task in Android

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