ios Swift Gyroscope 陀螺仪 详解

Start

override func viewDidLoad() {
    super.viewDidLoad()
    motionManager = CMMotionManager()
    ...
}

func startGyroscopeUpdates() {
        // Check whether the gyroscope is available
        guard self.motionManager.isGyroAvailable else { return }
        // Update the recurring update interval
        let updateInterval = 0.2
        self.motionManager.gyroUpdateInterval = updateInterval
        // Start gyroscope updates
        self.motionManager.startGyroUpdates(to: OperationQueue.main) {
            // if not update UI elements for ex: self.view, delete [weak self]
            [weak self] (gyroData, error) in
            // Handle error
            if let e = error {
                print(e.localizedDescription)
            }
            // Handler to process gyroscope data
            if let rotation = gyroData?.rotationRate{
                // Handle rotation
                print(String(format: "Rotation In X : %.2f", rotation.x))
                print(String(format: "Rotation In Y : %.2f", rotation.y))
                print(String(format: "Rotation In Z : %.2f", rotation.z))
            }
        }    
    }

Stop

func stopUpdates() {
    // Check whether the gyroscope is actived
    if self.motionManager.isGyroActive {
        // stop gyroscope updates
        self.motionManager.stopGyroUpdates()
    }
}

Gyroscope 数据

数据形式和Acceleration一样，具体请看 Acceleration .