Device Orientation
Requires Cordova plugin: cordova-plugin-device-orientation
. For more info, please see the Device Orientation docs.
Repo: https://github.com/apache/cordova-plugin-device-orientation
Installation
- Install the Cordova and Ionic Native plugins:
$ ionic cordova plugin add cordova-plugin-device-orientation $ npm install --save @ionic-native/device-orientation@4
- Add this plugin to your app's module
Supported platforms
- Amazon Fire OS
- Android
- BlackBerry 10
- Browser
- Firefox OS
- iOS
- Tizen
- Ubuntu
- Windows
- Windows Phone
Usage
// DeviceOrientationCompassHeading is an interface for compass
import { DeviceOrientation, DeviceOrientationCompassHeading } from '@ionic-native/device-orientation';
constructor(private deviceOrientation: DeviceOrientation) { }
...
// Get the device current compass heading
this.deviceOrientation.getCurrentHeading().then(
(data: DeviceOrientationCompassHeading) => console.log(data),
(error: any) => console.log(error)
);
// Watch the device compass heading change
var subscription = this.deviceOrientation.watchHeading().subscribe(
(data: DeviceOrientationCompassHeading) => console.log(data)
);
// Stop watching heading change
subscription.unsubscribe();
Instance Members
getCurrentHeading()
Get the current compass heading.
Returns: Promise<DeviceOrientationCompassHeading>
watchHeading(options)
Get the device current heading at a regular interval
Stop the watch by unsubscribing from the observable
Param | Type | Details |
---|---|---|
options |
DeviceOrientationCompassOptions
|
Options for compass. Frequency and Filter. OptionalOptional |
Returns: Observable<DeviceOrientationCompassHeading>
Returns an observable that contains the compass heading
DeviceOrientationCompassOptions
Param | Type | Details |
---|---|---|
frequency |
number
|
How often to retrieve the compass heading in milliseconds. (Number) (Default: 100) (optional) |
filter |
number
|
The change in degrees required to initiate a watchHeading success callback. When this value is set, frequency is ignored. (Number) (optional) |
DeviceOrientationCompassHeading
Param | Type | Details |
---|---|---|
magneticHeading |
number
|
The heading in degrees from 0-359.99 at a single moment in time. (Number) |
trueHeading |
number
|
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 |
number
|
The deviation in degrees between the reported heading and the true heading. (Number) |
timestamp |
number
|
The time at which this heading was determined. (DOMTimeStamp) |