Timers not work

[bootchk]

The pauseScan and resumeScan timers never fire. At least they never print. Xcode 7.3.1, iOS 9.3.5

[jsoncylu]

They are supposed to be scheduledTimers, at least as of Swift 3. I would replace the Timer lines to match this:

_ = Timer.scheduledTimer(timeInterval: timerScanInterval, target: self, selector: #selector(pauseScan), userInfo: nil, repeats: false) centralManager.scanForPeripherals(withServices: nil, options: nil)

[bootchk]

I am no expert in Swift but ... I assigned the result to a global "timer" of type NSTimer. All I can say is: it worked for me. The construct " _ = " confuses me with regard to whether an object was created and who owns it and when it might be garbage collected. Especially with regard to a timer object: I imagine it means that that timer will exist, owned by the OS, will fire and then go out of existence? But again, seems a little unnatural to me.

[jsoncylu]

Yes, it is odd to see it assigned to a "_". With Swift timers, one should call .invalidate()to remove it from the run loop.

Edit: actually since I have made it a "scheduledTimer" that doesn't repeat, it automatically deallocates itself once it is fired.