有没有办法在程序在 Objective-C 中运行时不断调用方法？
[英]Is there a way to be calling a method constantly while the program is running in Objective-C?
问题描述
I want to call a method infinitely while the program is running to check for the change of state of something.
我想在程序运行时无限调用一个方法来检查 state 的变化。 Is it possible to do this when programming for the iPhone?为 iPhone 编程时可以这样做吗？
1 个解决方案
解决方案1
10 已采纳 2011-07-08 21:56:34
It is possible, just use a repeating NSTimer .有可能，只需使用重复的NSTimer 。
However I would advise against the continuous polling to get the state - better to setup a callback/delegate/notification pattern to notify any observers of a state change.但是，我建议不要连续轮询以获取 state - 最好设置回调/委托/通知模式以通知任何观察者 state 更改。
You could also use Key Value Observing (KVO) to get notified when a value is updated.您还可以使用键值观察 (KVO) 在值更新时获得通知。
Lots of food for thought and terms to research.大量的思考和研究术语。
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