BLE scan timeout in iOS app

Question

I am having an app in which I start and perform a BLE scan. Every thing is fine. I just want to know that is there a feature for creating a timeout for the scanning process. So that if BLE scan cannot find any device for a certain period of time, I can show an alert or popup to the user.

Any suggestions are appreciated.

Answer 1

swift 3

var timer: Timer!
var countTime: Int = 0
var bleCentralManager: CBCentralManager!

override func viewWillAppear(_ animated: Bool) {

    self.timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(self.updateScanningStatus), userInfo: nil, repeats: true)
}

func updateScanningStatus(){

    if self.count >= 60{

        bleCentralManager.stopScan()

        timer.invalidate()

        timer = nil
    } else {
        count += 1
    }
}

after 1 min BLE scanning is stop.