CMMotionManager wrapper for react-native
Objective-C JavaScript
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README.md

Notice

I don't use this module anymore, and don't have time to maintain it. I've been handing out both github and npm write access to folks that seem interested, so feel free to ask.

react-native-motion-manager

CMMotionManager wrapper for react-native, exposing Accelerometer, Gyroscope, and Magnetometer.

Add it to your project

  1. npm install react-native-motion-manager@latest --save
  2. In XCode, in the project navigator, right click LibrariesAdd Files to [your project's name]
  3. Go to node_modulesreact-native-motion-manager and add RNMotionManager.xcodeproj
  4. In XCode, in the project navigator, select your project. Add libRNMotionManager.a to your project's Build PhasesLink Binary With Libraries
  5. Click RNMotionManager.xcodeproj in the project navigator and go the Build Settings tab. Make sure 'All' is toggled on (instead of 'Basic'). Look for Header Search Paths and make sure it contains both $(SRCROOT)/../react-native/React and $(SRCROOT)/../../React - mark both as recursive.
  6. Run your project (Cmd+R)

Setup trouble?

If you get stuck, take a look at Brent Vatne's blog. He was gracious enough to help out on this project, and his blog is my go to reference for this stuff.

Api

Setup

var {
    Accelerometer,
    Gyroscope,
    Magnetometer
} = require('NativeModules');
var {
  DeviceEventEmitter // will emit events that you can listen to
} = React;

Accelerometer

Accelerometer.setAccelerometerUpdateInterval(0.1); // in seconds
DeviceEventEmitter.addListener('AccelerationData', function (data) {
  /**
  * data.acceleration.x
  * data.acceleration.y
  * data.acceleration.z
  **/
});
Accelerometer.startAccelerometerUpdates(); // you'll start getting AccelerationData events above
Accelerometer.stopAccelerometerUpdates();

Gyroscope

Gyroscope.setGyroUpdateInterval(0.1); // in seconds
DeviceEventEmitter.addListener('GyroData', function (data) {
  /**
  * data.rotationRate.x
  * data.rotationRate.y
  * data.rotationRate.z
  **/
});
Gyroscope.startGyroUpdates(); // you'll start getting GyroscopicData events above
Gyroscope.stopGyroUpdates();

Magnetometer

Magnetometer.setMagnetometerUpdateInterval(0.1); // in seconds
DeviceEventEmitter.addListener('MagnetometerData', function (data) {
  /**
  * data.magneticField.x
  * data.magneticField.y
  * data.magneticField.z
  **/
});
Magnetometer.startMagnetometerUpdates(); // you'll start getting MagnetomerData events above
Magnetometer.stopMagnetometerUpdates();

Example

This repo contains an example react-native app to help get you started. Source code here.