Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.


Bruce Röttgers
Bruce Röttgers
18,211 Points

Execute Code if the user moves forward


I'm currently building an app and have written this code so far:

motionManager.startDeviceMotionUpdates() motionManager.startAccelerometerUpdates() motionManager.accelerometerUpdateInterval = 0.01 motionManager.deviceMotionUpdateInterval = 0.01 var acceleDataZ: Double = (motionManager.accelerometerData?.acceleration.z)!

Now I need to execute code should the user move forward.

Do you know how to do that?