CMMotionManager Class
Definition
Important
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Core class that provides access to the motion services in iOS.
[Foundation.Register("CMMotionManager", true)]
public class CMMotionManager : Foundation.NSObjecttype CMMotionManager = class
inherit NSObject- Inheritance
- Attributes
Remarks
Core Motion was introduced in iOS 7 and is not available on all devices (the iPhone 5S was the first phone to have the necessary coprocessor and the iPad Air 2 was the first tablet). Developers can check if Core Motion is available with DeviceMotionAvailable.
Applications that wish to access Core Motion must have an entitlements.plist file.
Users must explicitly grant access to Core Motion via a standard privacy dialog. Unlike most functions that require user permissions, there is not a corresponding API to check status. However, applications can perform a query and, if authorization is not available, will receive an error of type MotionActivityNotAuthorized. This technique is shown in the following example:
var stepCounter = new CMStepCounter ();
stepCounter.QueryStepCount(
NSDate.FromTimeIntervalSinceNow(-60 * 60 * 24),
NSDate.Now,
NSOperationQueue.MainQueue, ((steps, error) => {
if(error != null && error.Code == (int) CMError.MotionActivityNotAuthorized)
{
motionStatus = "Not Authorized";
UpdateStatus();
}
else
{
motionStatus = "Available";
var stepMsg = String.Format("You have taken {0} steps in the past 24 hours", steps);
InvokeOnMainThread(() => {
stepsMessage.Text = stepMsg;
UpdateStatus();
});
}
}));
Constructors
| CMMotionManager() |
Default constructor that initializes a new instance of this class with no parameters. |
| CMMotionManager(IntPtr) |
A constructor used when creating managed representations of unmanaged objects; Called by the runtime. |
| CMMotionManager(NSObjectFlag) |
Constructor to call on derived classes to skip initialization and merely allocate the object. |
Properties
| AccelerometerActive |
Whether the accelerometer is currently sending updates. |
| AccelerometerAvailable |
Whether the device has an accelerometer. |
| AccelerometerData |
The latest accelerometer data. |
| AccelerometerUpdateInterval |
The duration, in seconds, between accelerometer data updates. |
| AttitudeReferenceFrame |
The current attitude reference frame. |
| AvailableAttitudeReferenceFrames |
Returns a bit-mask of all the available reference frames. |
| Class | (Inherited from NSObject) |
| ClassHandle |
The handle for this class. |
| DebugDescription |
A developer-meaningful description of this object. (Inherited from NSObject) |
| Description |
Description of the object, the Objective-C version of ToString. (Inherited from NSObject) |
| DeviceMotion |
The latest device-motion data. |
| DeviceMotionActive |
Whether the device is delivering device-motion updates. |
| DeviceMotionAvailable |
Whether the device supports device-motion updates. |
| DeviceMotionUpdateInterval |
The interval, in seconds, between device-motion data updates. |
| GyroActive |
Whether the device gyroscope is delivering updates. |
| GyroAvailable |
Whether the device has a gyroscope. |
| GyroData |
The latest gyroscopic data from the device. |
| GyroUpdateInterval |
The interval, in seconds, between gyroscopic data updates. |
| Handle |
Handle (pointer) to the unmanaged object representation. (Inherited from NSObject) |
| IsDirectBinding | (Inherited from NSObject) |
| IsProxy | (Inherited from NSObject) |
| MagnetometerActive |
Whether the magnetometer is delivering data updates. |
| MagnetometerAvailable |
Whether the device has a magnetometer. |
| MagnetometerData |
The latest magnetometer data. |
| MagnetometerUpdateInterval |
The interval, in seconds, between magnetometer updates. |
| RetainCount |
Returns the current Objective-C retain count for the object. (Inherited from NSObject) |
| Self | (Inherited from NSObject) |
| ShowsDeviceMovementDisplay |
Whether the device-movement display is shown. |
| Superclass | (Inherited from NSObject) |
| SuperHandle |
Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject) |
| Zone | (Inherited from NSObject) |
Methods
| AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr) |
Registers an object for being observed externally (using NSString keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject) |
| AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr) |
Registers an object for being observed externally (using string keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject) |
| AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>) |
Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject) |
| AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>) |
Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject) |
| AwakeFromNib() |
Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib(). (Inherited from NSObject) |
| BeginInvokeOnMainThread(Action) | (Inherited from NSObject) |
| BeginInvokeOnMainThread(Selector, NSObject) |
Invokes asynchrously the specified code on the main UI thread. (Inherited from NSObject) |
| Bind(NSString, NSObject, String, NSDictionary) | (Inherited from NSObject) |
| Bind(String, NSObject, String, NSDictionary) |
Obsolete.
(Inherited from NSObject)
|
| BindingInfo(String) |
Obsolete.
(Inherited from NSObject)
|
| BindingOptionDescriptions(String) |
Obsolete.
(Inherited from NSObject)
|
| BindingValueClass(String) |
Obsolete.
(Inherited from NSObject)
|
| CommitEditing() | (Inherited from NSObject) |
| CommitEditing(NSObject, Selector, IntPtr) | (Inherited from NSObject) |
| ConformsToProtocol(IntPtr) |
Invoked to determine if this object implements the specified protocol. (Inherited from NSObject) |
| Copy() |
Performs a copy of the underlying Objective-C object. (Inherited from NSObject) |
| DangerousAutorelease() | (Inherited from NSObject) |
| DangerousRelease() | (Inherited from NSObject) |
| DangerousRetain() | (Inherited from NSObject) |
| DidChange(NSKeyValueChange, NSIndexSet, NSString) |
Indicates a change occurred to the indexes for a to-many relationship. (Inherited from NSObject) |
| DidChange(NSString, NSKeyValueSetMutationKind, NSSet) | (Inherited from NSObject) |
| DidChangeValue(String) |
Indicates that a change occurred on the specified key. (Inherited from NSObject) |
| Dispose() |
Releases the resources used by the NSObject object. (Inherited from NSObject) |
| Dispose(Boolean) |
Releases the resources used by the NSObject object. (Inherited from NSObject) |
| DoesNotRecognizeSelector(Selector) |
Indicates that this object does not recognize the specified selector. (Inherited from NSObject) |
| Equals(NSObject) | (Inherited from NSObject) |
| Equals(Object) | (Inherited from NSObject) |
| ExposedBindings() | (Inherited from NSObject) |
| GetBindingInfo(NSString) | (Inherited from NSObject) |
| GetBindingOptionDescriptions(NSString) | (Inherited from NSObject) |
| GetBindingValueClass(NSString) | (Inherited from NSObject) |
| GetDictionaryOfValuesFromKeys(NSString[]) |
Retrieves the values of the specified keys. (Inherited from NSObject) |
| GetHashCode() |
Generates a hash code for the current instance. (Inherited from NSObject) |
| GetMethodForSelector(Selector) | (Inherited from NSObject) |
| GetNativeField(String) |
Obsolete.
(Inherited from NSObject)
|
| GetNativeHash() | (Inherited from NSObject) |
| Init() | (Inherited from NSObject) |
| InitializeHandle(IntPtr, String) | (Inherited from NSObject) |
| InitializeHandle(IntPtr) | (Inherited from NSObject) |
| Invoke(Action, Double) | (Inherited from NSObject) |
| Invoke(Action, TimeSpan) | (Inherited from NSObject) |
| InvokeOnMainThread(Action) | (Inherited from NSObject) |
| InvokeOnMainThread(Selector, NSObject) |
Invokes synchrously the specified code on the main UI thread. (Inherited from NSObject) |
| IsEqual(NSObject) | (Inherited from NSObject) |
| IsKindOfClass(Class) | (Inherited from NSObject) |
| IsMemberOfClass(Class) | (Inherited from NSObject) |
| MarkDirty() |
Promotes a regular peer object (IsDirectBinding is true) into a toggleref object. (Inherited from NSObject) |
| MutableCopy() |
Creates a mutable copy of the specified NSObject. (Inherited from NSObject) |
| ObjectDidEndEditing(NSObject) | (Inherited from NSObject) |
| ObserveValue(NSString, NSObject, NSDictionary, IntPtr) |
Indicates that the value at the specified keyPath relative to this object has changed. (Inherited from NSObject) |
| PerformSelector(Selector, NSObject, Double, NSString[]) | (Inherited from NSObject) |
| PerformSelector(Selector, NSObject, Double) |
Invokes the selector on the current instance and if the |
| PerformSelector(Selector, NSObject, NSObject) | (Inherited from NSObject) |
| PerformSelector(Selector, NSObject) | (Inherited from NSObject) |
| PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[]) | (Inherited from NSObject) |
| PerformSelector(Selector, NSThread, NSObject, Boolean) | (Inherited from NSObject) |
| PerformSelector(Selector) | (Inherited from NSObject) |
| PrepareForInterfaceBuilder() | (Inherited from NSObject) |
| RemoveObserver(NSObject, NSString, IntPtr) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject) |
| RemoveObserver(NSObject, NSString) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject) |
| RemoveObserver(NSObject, String, IntPtr) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject) |
| RemoveObserver(NSObject, String) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject) |
| RespondsToSelector(Selector) |
Whether this object recognizes the specified selector. (Inherited from NSObject) |
| SetNativeField(String, NSObject) |
Obsolete.
(Inherited from NSObject)
|
| SetNilValueForKey(NSString) |
Sets the value of the specified key to null. (Inherited from NSObject) |
| SetValueForKey(NSObject, NSString) |
Sets the value of the property specified by the key to the specified value. (Inherited from NSObject) |
| SetValueForKeyPath(IntPtr, NSString) |
A constructor used when creating managed representations of unmanaged objects; Called by the runtime. (Inherited from NSObject) |
| SetValueForKeyPath(NSObject, NSString) |
Sets the value of a property that can be reached using a keypath. (Inherited from NSObject) |
| SetValueForUndefinedKey(NSObject, NSString) |
Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject) |
| SetValuesForKeysWithDictionary(NSDictionary) |
Sets the values of this NSObject to those in the specified dictionary. (Inherited from NSObject) |
| StartAccelerometerUpdates() |
Requests that the accelerometer begin delivering data updates. |
| StartAccelerometerUpdates(NSOperationQueue, CMAccelerometerHandler) |
Requests that the accelerometer begin delivering data updates. |
| StartDeviceMotionUpdates() |
Requests that the device begin delivering device-motion data updates. |
| StartDeviceMotionUpdates(CMAttitudeReferenceFrame, NSOperationQueue, CMDeviceMotionHandler) |
Requests that the device begin delivering device-motion data updates. |
| StartDeviceMotionUpdates(CMAttitudeReferenceFrame) |
Requests that the device begin delivering device-motion data updates, using |
| StartDeviceMotionUpdates(NSOperationQueue, CMDeviceMotionHandler) |
Requests that the device begin delivering device-motion data updates. |
| StartGyroUpdates() |
Requests that the gyroscope begin delivering data updates. |
| StartGyroUpdates(NSOperationQueue, CMGyroHandler) |
Requests that the gyroscope begin delivering data updates. |
| StartMagnetometerUpdates() |
Requests that the magnetometer begin delivering data updates. |
| StartMagnetometerUpdates(NSOperationQueue, CMMagnetometerHandler) |
Requests that the gyroscope begin delivering data updates. |
| StopAccelerometerUpdates() |
Requests that the accelerometer stop delivering data updates. |
| StopDeviceMotionUpdates() |
Requests that the device stop delivering device-motion updates. |
| StopGyroUpdates() |
Requests that the gyroscope stop delivering data updates. |
| StopMagnetometerUpdates() |
Requests that the magnetometer begin delivering data updates. |
| ToString() |
Returns a string representation of the value of the current instance. (Inherited from NSObject) |
| Unbind(NSString) | (Inherited from NSObject) |
| Unbind(String) |
Obsolete.
(Inherited from NSObject)
|
| ValueForKey(NSString) |
Returns the value of the property associated with the specified key. (Inherited from NSObject) |
| ValueForKeyPath(NSString) |
Returns the value of a property that can be reached using a keypath. (Inherited from NSObject) |
| ValueForUndefinedKey(NSString) |
Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject) |
| WillChange(NSKeyValueChange, NSIndexSet, NSString) |
Indicates that the values of the specified indices in the specified key are about to change. (Inherited from NSObject) |
| WillChange(NSString, NSKeyValueSetMutationKind, NSSet) | (Inherited from NSObject) |
| WillChangeValue(String) |
Indicates that the value of the specified key is about to change. (Inherited from NSObject) |
Extension Methods
| GetDebugDescription(INSObjectProtocol) | |
| GetAccessibilityCustomRotors(NSObject) |
Gets the array of UIAccessibilityCustomRotor objects appropriate for |
| SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[]) |
Sets the array of UIAccessibilityCustomRotor objects appropriate for |