2014/10/15 下午 10:05:09

iphone Programming Glossary: cmmotionmanager

Finding distance using accelerometer in iPhone

http://stackoverflow.com/questions/10930007/finding-distance-using-accelerometer-in-iphone

between between 2 iPhones but I need distance calculation with one iPhone only i.e need displacement. 2. Tried CMMotionManager and its accelerometer data but values received is helpless. I think I need a good filter to get useful data out of that..

Why am I getting 0 degrees from magneticField property the whole time?

http://stackoverflow.com/questions/11711646/why-am-i-getting-0-degrees-from-magneticfield-property-the-whole-time

solely on the device's magnetometer. This is the code I've written but I just get 0 degrees.. What am I doing wrong CMMotionManager motionManager motionManager CMMotionManager alloc init motionManager startDeviceMotionUpdates CMDeviceMotion deviceMotion.. is the code I've written but I just get 0 degrees.. What am I doing wrong CMMotionManager motionManager motionManager CMMotionManager alloc init motionManager startDeviceMotionUpdates CMDeviceMotion deviceMotion deviceMotion CMDeviceMotion alloc init while..

Objective-C Delegate Type

http://stackoverflow.com/questions/11776607/objective-c-delegate-type

Safe update interval for startDeviceMotionUpdatesToQueue:withHandler:?

http://stackoverflow.com/questions/11797857/safe-update-interval-for-startdevicemotionupdatestoqueuewithhandler

not be able to keep up with such an interval is this true double myAcceleration a global.. void play my main method.. CMMotionManager motionManager CMMotionManager alloc init motionManager.deviceMotionUpdateInterval 0.03 update every 30ms motionManager startDeviceMotionUpdatesToQueue.. an interval is this true double myAcceleration a global.. void play my main method.. CMMotionManager motionManager CMMotionManager alloc init motionManager.deviceMotionUpdateInterval 0.03 update every 30ms motionManager startDeviceMotionUpdatesToQueue..

Is it possible to run accelerometer of iPhone in background?

http://stackoverflow.com/questions/2294985/is-it-possible-to-run-accelerometer-of-iphone-in-background

withHandler method here https developer.apple.com library ios documentation CoreMotion Reference CMMotionManager_Class Reference Reference.html# apple_ref occ instm CMMotionManager startAccelerometerUpdatesToQueue withHandler share..

CMMotionManager and the Gyroscope on iPhone 4

http://stackoverflow.com/questions/3229311/cmmotionmanager-and-the-gyroscope-on-iphone-4

and the Gyroscope on iPhone 4 I am trying to simply NSLog the output of the new iPhone 4 Gyroscope. But after reading the.. locations log var mobile Library Caches CoreMotion CoreMotion.log Even if I just setup my motionManager object with CMMotionManager alloc init on its own and no other code I still get the error. Here is my .h file. #import UIKit UIKit.h #import CoreMotion.. my .h file. #import UIKit UIKit.h #import CoreMotion CoreMotion.h @interface GyroTest0ViewController UIViewController CMMotionManager motionManager NSOperationQueue opQ @end And here my .m file. void viewDidLoad super viewDidLoad the error occurs even just..

Apple gyroscope sample code

http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code

manager object and optionally but recommended a reference attitude object So in your interface definition you add CMMotionManager motionManager CMAttitude referenceAttitude According to the docs you should only create one of these managers per application... your class once. Then in your init method you should allocate the motion manager object like so motionManager CMMotionManager alloc init referenceAttitude nil When you want to enable the gyro you could create an enableGyro method or just call it..

Compensating compass lag with the gyroscope on iPhone 4

http://stackoverflow.com/questions/4212988/compensating-compass-lag-with-the-gyroscope-on-iphone-4

with an issue I'm having. I want to compensate for the slowness of the compass by using data from the gyroscope. Using CMMotionManager and its CMDeviceMotion object motionManager.deviceMotion I get the CMAttitude object. Correct me if I'm wrong please but..

iphone - core motion (relative rotation)

http://stackoverflow.com/questions/5053793/iphone-core-motion-relative-rotation

improve this question There is indeed. You can get what you're looking for by drilling down into the properties of CMMotionManager through CMDeviceMotion and finally to CMAttitude . The attitude of the device is defined as the orientation of a body relative..