# Modules.CoreMotion.Accelerometer

Allows Titanium client applications to access CoreMotion's Accelerometer APIs.

Availability
5.2.0

# Properties

# apiName READONLY

Availability
5.2.0
apiName :String

The name of the API that this proxy corresponds to.

The value of this property is the fully qualified name of the API. For example, Titanium.UI.Button returns Ti.UI.Button.


# bubbleParent

Availability
5.2.0
bubbleParent :Boolean

Indicates if the proxy will bubble an event to its parent.

Some proxies (most commonly views) have a relationship to other proxies, often established by the add() method. For example, for a button added to a window, a click event on the button would bubble up to the window. Other common parents are table sections to their rows, table views to their sections, and scrollable views to their views. Set this property to false to disable the bubbling to the proxy's parent.

Default: true

# Methods

# addEventListener

Availability
5.2.0
addEventListener(name, callback) void

Adds the specified callback as an event listener for the named event.

Parameters

Name Type Description
name String

Name of the event.

callback Callback<Titanium.Event>

Callback function to invoke when the event is fired.

Returns

Type
void

# applyProperties

Availability
5.2.0
applyProperties(props) void

Applies the properties to the proxy.

Properties are supplied as a dictionary. Each key-value pair in the object is applied to the proxy such that myproxy[key] = value.

Parameters

Name Type Description
props Dictionary

A dictionary of properties to apply.

Returns

Type
void

# fireEvent

Availability
5.2.0
fireEvent(name[, event]) void

Fires a synthesized event to any registered listeners.

Parameters

Name Type Description
name String

Name of the event.

event Dictionary

A dictionary of keys and values to add to the Titanium.Event object sent to the listeners.

Returns

Type
void

# getAccelerometerData

Availability
5.2.0
getAccelerometerData() CoreMotionAccelerometerData

Returns the latest sample of accelerometer data.

An app that is receiving accelerometer data after calling startAccelerometerUpdates with no callback, needs to periodically check the value returned by this method and process the acceleration data.

Returns


# isAccelerometerActive

Availability
5.2.0
isAccelerometerActive() Boolean

Returns a Boolean indicating whether accelerometer updates are currently happening.

Indicates whether startAccelerometerUpdates has been called since stopAccelerometerUpdates.

Returns

Type
Boolean

# isAccelerometerAvailable

Availability
5.2.0
isAccelerometerAvailable() Boolean

Returns a Boolean indicating whether an accelerometer is available on the device.

Returns

Type
Boolean

# removeEventListener

Availability
5.2.0
removeEventListener(name, callback) void

Removes the specified callback as an event listener for the named event.

Multiple listeners can be registered for the same event, so the callback parameter is used to determine which listener to remove.

When adding a listener, you must save a reference to the callback function in order to remove the listener later:

var listener = function() { Ti.API.info("Event listener called."); }
window.addEventListener('click', listener);

To remove the listener, pass in a reference to the callback function:

window.removeEventListener('click', listener);

Parameters

Name Type Description
name String

Name of the event.

callback Callback<Titanium.Event>

Callback function to remove. Must be the same function passed to addEventListener.

Returns

Type
void

# setAccelerometerUpdateInterval

Availability
5.2.0
setAccelerometerUpdateInterval(interval) void

The interval in milliseconds, for providing accelerometer updates to the callback.

Parameters

Name Type Description
interval Number

The interval in milliseconds

Returns

Type
void

# startAccelerometerUpdates

Availability
5.2.0
startAccelerometerUpdates([callback]) void

Starts accelerometer updates.

If a callback is passed to this method, it will be called whenever there is an update. The frequency of these updates can be controlled using the setAccelerometerUpdateInterval method. If no callback is passed, the accelerometer data can be accessed using the getAccelerometerData method. To stop the delivery of events, call the stopAccelerometerUpdates method. Note: It is recommended to set an update interval of at least 250ms before, to avoid receiving too many callbacks at once.

Parameters

Name Type Description
callback Callback<CoreMotionAccelerometerDataWithSuccess>

The method to be called when there is an update.

Returns

Type
void

# stopAccelerometerUpdates

Availability
5.2.0
stopAccelerometerUpdates() void

Stops accelerometer updates.

Returns

Type
void