ng-cordova/src/plugins/deviceMotion.js

[ngCordova](http://ngcordova.com/) ==========

// install   :     cordova plugin add cordova-plugin-device-motion
// link      :     https://github.com/apache/cordova-plugin-device-motion

angular.module('ngCordova.plugins.deviceMotion', [])

  .factory('$cordovaDeviceMotion', ['$q', function ($q) {

    return {
      getCurrentAcceleration: function () {
        var q = $q.defer();

        if (angular.isUndefined(navigator.accelerometer) ||
        !angular.isFunction(navigator.accelerometer.getCurrentAcceleration)) {
          q.reject('Device do not support watchAcceleration');
          return q.promise;
        }

        navigator.accelerometer.getCurrentAcceleration(function (result) {
          q.resolve(result);
        }, function (err) {
          q.reject(err);
        });

        return q.promise;
      },

      watchAcceleration: function (options) {
        var q = $q.defer();

        if (angular.isUndefined(navigator.accelerometer) ||
        !angular.isFunction(navigator.accelerometer.watchAcceleration)) {
          q.reject('Device do not support watchAcceleration');
          return q.promise;
        }

        var watchID = navigator.accelerometer.watchAcceleration(function (result) {
          q.notify(result);
        }, function (err) {
          q.reject(err);
        }, options);

        q.promise.cancel = function () {
          navigator.accelerometer.clearWatch(watchID);
        };

        q.promise.clearWatch = function (id) {
          navigator.accelerometer.clearWatch(id || watchID);
        };

        q.promise.watchID = watchID;

        return q.promise;
      },

      clearWatch: function (watchID) {
        return navigator.accelerometer.clearWatch(watchID);
      }
    };
  }]);