Awesome Open Source
Awesome Open Source


Simple GCD-based timer based on NSTimer. It starts immediately and stops when released. This avoids many of the typical problems with NSTimer:

  • RNTimer runs in all modes (unlike NSTimer)
  • RNTimer runs when there is no runloop (unlike NSTimer)
  • Repeating RNTimers can easily avoid retain loops (unlike NSTimer)

Currently there is only a simple repeating timer (since this is the most common use that's hard to do correctly with NSTimer). It always runs on the main queue.


__weak id weakSelf = self;
self.timer =
    [RNTimer repeatingTimerWithTimeInterval:1
                                        [weakSelf doSomething];


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