Swift 3.0 how to use startDeviceMotionUpdates(to: withHandler)?

问题

Swift 3.0 was released alongside Xcode 8.0 and apparently a lot has changed. I'm very unfamiliar with the new syntax in swift. Can someone help me out? I'm trying to figure out what goes in

motionManager.startDeviceMotionUpdates(
        to: OperationQueue.current()!,
        withHandler: )

after the "withHandler:"

I am trying to get my SceneKit program be able to utilize the accelerometer to determine the orientation of an SCNNode platform. I am also fairly new to swift (about 5 days into programming in Swift) so if there's something fundamental I am messing up, let me know.

回答1:

Reference

You must pass the block that conforms the CMDeviceMotionHandler type.

 motionManager.startDeviceMotionUpdates(to: OperationQueue.current()!, withHandler:{
                deviceManager, error in
                //Do stuffs with deviceManager or with error

            })

来源：https://stackoverflow.com/questions/37850229/swift-3-0-how-to-use-startdevicemotionupdatesto-withhandler