Detect if body present for heart r… | Apple Developer Forums

Detect if body present for heart rate

Hi guys,

Is there a way to detect if a body is present to determine whether or not to show a heart rate?

I am finding that when I take the watch off, the heart rate sensor keeps returning values. I want to show "-" when the watch is taken off.

Below is the function I am using to get the last heart rate.

Thanks.

Code Block    private func process(_ samples: [HKQuantitySample], type: HKQuantityTypeIdentifier) {
    print("I am in the process func")
     
    // variable initialization
    var lastHeartRate = 0.0
     // cycle and value assignment
    guard let sample = samples.first else{
      return
    }
     
    if type == .heartRate {
      lastHeartRate = sample.quantity.doubleValue(for: heartRateQuantity)
    }
     
    self.value = Int(lastHeartRate)
    hrLabel.setText(String(value))
    print("****The lastHeartRate is \(lastHeartRate)")
     
)
     
  }