commit | 4271adb2c44bd2c2e1ed632a060f3a9500fab28f | [log] [tgz] |
---|---|---|
author | Jesse MacFadyen <purplecabbage@gmail.com> | Tue Jul 07 17:39:16 2015 -0700 |
committer | Jesse MacFadyen <purplecabbage@gmail.com> | Tue Jul 07 17:39:16 2015 -0700 |
tree | 88fade40546cba7a410b6851dc6cce58fa2a1c79 | |
parent | 124ec5540ed6fe284f65665546420ae6d35beace [diff] |
remove travis-ci
This plugin provides access to the device's compass. The compass is a sensor that detects the direction or heading that the device is pointed, typically from the top of the device. It measures the heading in degrees from 0 to 359.99, where 0 is north.
Access is via a global navigator.compass
object.
Although the object is attached to the global scoped navigator
, it is not available until after the deviceready
event.
document.addEventListener("deviceready", onDeviceReady, false); function onDeviceReady() { console.log(navigator.compass); }
cordova plugin add cordova-plugin-device-orientation
Get the current compass heading. The compass heading is returned via a CompassHeading
object using the compassSuccess
callback function.
navigator.compass.getCurrentHeading(compassSuccess, compassError);
function onSuccess(heading) { alert('Heading: ' + heading.magneticHeading); }; function onError(error) { alert('CompassError: ' + error.code); }; navigator.compass.getCurrentHeading(onSuccess, onError);
Gets the device's current heading at a regular interval. Each time the heading is retrieved, the headingSuccess
callback function is executed.
The returned watch ID references the compass watch interval. The watch ID can be used with navigator.compass.clearWatch
to stop watching the navigator.compass.
var watchID = navigator.compass.watchHeading(compassSuccess, compassError, [compassOptions]);
compassOptions
may contain the following keys:
function onSuccess(heading) { var element = document.getElementById('heading'); element.innerHTML = 'Heading: ' + heading.magneticHeading; }; function onError(compassError) { alert('Compass error: ' + compassError.code); }; var options = { frequency: 3000 }; // Update every 3 seconds var watchID = navigator.compass.watchHeading(onSuccess, onError, options);
Values for current heading are randomly generated in order to simulate the compass.
Only one watchHeading
can be in effect at one time in iOS. If a watchHeading
uses a filter, calling getCurrentHeading
or watchHeading
uses the existing filter value to specify heading changes. Watching heading changes with a filter is more efficient than with time intervals.
filter
is not supported.filter
.filter
.filter
.filter
.Stop watching the compass referenced by the watch ID parameter.
navigator.compass.clearWatch(watchID);
navigator.compass.watchHeading
.var watchID = navigator.compass.watchHeading(onSuccess, onError, options); // ... later on ... navigator.compass.clearWatch(watchID);
A CompassHeading
object is returned to the compassSuccess
callback function.
magneticHeading: The heading in degrees from 0-359.99 at a single moment in time. (Number)
trueHeading: The heading relative to the geographic North Pole in degrees 0-359.99 at a single moment in time. A negative value indicates that the true heading can't be determined. (Number)
headingAccuracy: The deviation in degrees between the reported heading and the true heading. (Number)
timestamp: The time at which this heading was determined. (milliseconds)
trueHeading
is not supported, but reports the same value as magneticHeading
headingAccuracy
is always 0 because there is no difference between the magneticHeading
and trueHeading
The trueHeading
property is not supported, but reports the same value as magneticHeading
.
The headingAccuracy
property is always 0 because there is no difference between the magneticHeading
and trueHeading
.
The trueHeading
property is not supported, but reports the same value as magneticHeading
.
The headingAccuracy
property is always 0 because there is no difference between the magneticHeading
and trueHeading
.
The trueHeading
property is only returned for location services enabled via navigator.geolocation.watchLocation()
.
For iOS 4 devices and above, heading factors in the device's current orientation, and does not reference its absolute position, for apps that supports that orientation.
A CompassError
object is returned to the compassError
callback function when an error occurs.
CompassError.COMPASS_INTERNAL_ERR
CompassError.COMPASS_NOT_SUPPORTED