在单个iPhone应用程序中可以设置的NSTimer的最大数量

Question

I am currently developing one application, in which my client wants to have some functionality in which i need to start lots of timer for different functionalities.

So, my question is that, by setting lots of NSTimer in single app, will it lead my App to crash?, or Is there any much side effect in application's performance?

Answer 1

Internally, NSTimers are all implemented on a single hardware timer. The OS keeps a central list of timers for all running apps and simply scheduels a single hardware timer for the soonest event.

Adding timers does not change the behaviour of your app. That said, in the same way that adding thready to an essentially single process machine makes runtime management easier, adding timers can help you partition your problem.

Number of timers isn't a problem.

Answer 2

NSTimers do consume battery depending on what is running in each timer loop and how many times it is running. Again, performance varies form device to device, as iPhone 6 has better RAM and memory then iPhone 5. So, might give memory warning and crash for certain devices.