自动注销 iPhone 应用程序
我希望制作一款 iPhone，一旦应用程序在前台或后台空闲指定的时间段后，该 iPhone 就会让用户退出会话。
我猜我应该使用 NSTimer，但我不知道从哪里开始。当应用程序位于前台时，如何判断用户何时处于空闲状态？我猜它应该是一个 UIApplicationDelegate 方法？
有什么建议吗？谢谢。
I'm looking to make an iphone that will log a user out of a session once the app has been either idle in the foreground or in the background for a specified period of time.
I'm guessing that I should use an NSTimer, but I don't know where to start it. How can I tell when a user has been idle when the app is in the foreground? I'm guessing that it should be a UIApplicationDelegate method?
Any suggestions? Thanks.
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如果您想在应用程序进入后台时自动注销，请尝试查看应用程序委托方法。例如，有一个
applicationDidEnterBackground方法，并且applicationWillTerminate也可能有所帮助。您可以在此处实现自动注销。如果您想在应用程序在后台运行一段时间后注销，那么您需要启用应用程序在后台运行。为此，只需转到应用程序 info.plist 文件并添加一个新字段“应用程序不在后台运行”。确保它未被选中。然后在applicationDidEnterBackground方法中添加一个NSTimer，经过一定时间就可以注销了。If you want to auto logout when the application enters background, try looking at the application delegate methods. For example, there is a
applicationDidEnterBackgroundmethod, andapplicationWillTerminatecould also be helpful. This is where you could implement your automatic logout. If you want to logout after the application is in the background for a certain period of time, then you need to enable your application to run in the background. To do that just go to the application info.plist file and add a new field "Application does not run in background". Make sure it is UNchecked. Then in theapplicationDidEnterBackgroundmethod add an NSTimer, and after a certain period of time you can logout.