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https://github.com/apache/cordova-plugin-device-orientation
Apache Cordova Device Orientation Plugin
https://github.com/apache/cordova-plugin-device-orientation
android cordova hacktoberfest ios java javascript library mobile nodejs objective-c
Last synced: about 3 hours ago
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Apache Cordova Device Orientation Plugin
- Host: GitHub
- URL: https://github.com/apache/cordova-plugin-device-orientation
- Owner: apache
- License: apache-2.0
- Created: 2013-06-22T07:00:15.000Z (over 11 years ago)
- Default Branch: master
- Last Pushed: 2023-11-05T17:33:17.000Z (11 months ago)
- Last Synced: 2024-09-19T22:02:07.708Z (5 days ago)
- Topics: android, cordova, hacktoberfest, ios, java, javascript, library, mobile, nodejs, objective-c
- Language: JavaScript
- Homepage: https://cordova.apache.org/
- Size: 402 KB
- Stars: 58
- Watchers: 21
- Forks: 83
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
README
---
title: Device Orientation
description: Access compass data.
---
# cordova-plugin-device-orientation
[](https://github.com/apache/cordova-plugin-device-orientation/actions/workflows/android.yml) [](https://github.com/apache/cordova-plugin-device-orientation/actions/workflows/chrome.yml) [](https://github.com/apache/cordova-plugin-device-orientation/actions/workflows/ios.yml) [](https://github.com/apache/cordova-plugin-device-orientation/actions/workflows/lint.yml)
# Usage Notice
With the [W3C Device Orientation API](https://www.w3.org/TR/orientation-event/), Android, iOS, and Windows devices may not need this plugin anymore.
However, on iOS 13+, potential issues with permissions and secure contexts can arise. Therefore it is recommended to use this plugin as it uses a native implementation.
------
## Description
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);
}
Report issues on the [Apache Cordova issue tracker](https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=190&projectKey=CB)
## Installation
cordova plugin add cordova-plugin-device-orientation
## Supported Platforms
- Android
- Browser
- iOS
- Windows
## Methods
- navigator.compass.getCurrentHeading
- navigator.compass.watchHeading
- navigator.compass.clearWatch
## navigator.compass.getCurrentHeading
Get the current compass heading. The compass heading is returned via a `CompassHeading`
object using the `compassSuccess` callback function.
navigator.compass.getCurrentHeading(compassSuccess, compassError);
### Example
function onSuccess(heading) {
alert('Heading: ' + heading.magneticHeading);
};
function onError(error) {
alert('CompassError: ' + error.code);
};
navigator.compass.getCurrentHeading(onSuccess, onError);
## navigator.compass.watchHeading
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:
- __frequency__: How often to retrieve the compass heading in milliseconds. _(Number)_ (Default: 100)
- __filter__: The change in degrees required to initiate a watchHeading success callback. When this value is set, __frequency__ is ignored. _(Number)_
### Example
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);
### Browser Quirks
Values for current heading are randomly generated in order to simulate the compass.
### iOS Quirks
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.
### Android Quirks
- No support for `filter`.
## navigator.compass.clearWatch
Stop watching the compass referenced by the watch ID parameter.
navigator.compass.clearWatch(watchID);
- __watchID__: The ID returned by `navigator.compass.watchHeading`.
### Example
var watchID = navigator.compass.watchHeading(onSuccess, onError, options);
// ... later on ...
navigator.compass.clearWatch(watchID);
## CompassHeading
A `CompassHeading` object is returned to the `compassSuccess` callback function.
### Properties
- __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. _(DOMTimeStamp)_
### Android Quirks
- 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`.
### iOS Quirks
- The `trueHeading` property is only returned for location services enabled via `navigator.geolocation.watchLocation()`.
## CompassError
A `CompassError` object is returned to the `compassError` callback function when an error occurs.
### Properties
- __code__: One of the predefined error codes listed below.
### Constants
- `CompassError.COMPASS_INTERNAL_ERR`
- `CompassError.COMPASS_NOT_SUPPORTED`