问题描述
我想在我的应用程序中实现uilocalnotification.但是问题在于它没有在正确的时间触发.从给定的发射时间开始30到40秒后开始发射.是我缺少的东西，还是UILocalNotification中的普遍想法.
I want to implement uilocalnotification in my app. but the problem is that it is not firing at the exact time. it is firing after 30 - 40 secs from the given firing time.Is there something I am missing or this is a common think in UILocalNotification.
谢谢
推荐答案
UILocalNotification专为将来发生的事情而设计，因此30秒的错误就可以了(即，如果我在15:00开会，那么在15:00:30告诉我没问题:)
UILocalNotification is designed for things that are happening far in the future so an error of 30 seconds would be OK (i.e. if I had a meeting at 15:00 then telling me at 15:00:30 wouldn't be a problem :)
如果您想获得更高的准确性，则需要保持应用程序运行并使用NSTimer.
If you want more accuracy than that you will need to keep your app running and use an NSTimer.
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