程序在后台运行时的通知 iOS 4
我们正在寻找一种让 iPhone 应用程序超时的方法，并尝试了几种方法：
NSTimer 在操作后重置 操作后重置的 LocalNotification
两者都很接近，但都存在独特的问题：
NSTimer：当手机休眠时，计时器不会触发 LocalNotification：当应用程序在后台时，会显示通知，我们没有办法让应用程序必须接收通知。
询问小组这听起来是否正确，或者上面是否有我遗漏的某些点可以让这个工作发挥作用。
提前致谢！
We are looking for a way to timeout an iPhone application, and have tried several methods:
NSTimer that resets after an action
LocalNotification that resets after an action
Both are close, but suffer from unique issues:
NSTimer: When the phone sleeps, the timer will not fire
LocalNotification: When the app is in the background, the notification is displayed, we don't have a way to have the application have to receive the notification.
Asking the group if this sounds correct, or if there is maybe some point above that I am missing that would allow this to work.
Thanks in advance!
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您确实意识到，当您的应用程序处于挂起状态时，您将不会收到任何通知 - 这在文档中是正确的。只有 3 类应用程序可以接收通知：音频应用程序（如 iPod 和类似产品）、基于位置的应用程序和 VoIP 应用程序。如果您的应用程序是这些应用程序之一，则必须正确设置您的 plist。
You do realize that when your app is in a suspended state, you won't receive any notifications -- and this is right in the documentation. There are only 3 classes of applications that can receive notifications: Audio applications (like iPod and analogues), location based applications, and voip apps. Your plist has to be set up correctly if your app is one of those applications.