ionic-framework/demos/google-maps/script.js

angular.module('ionicApp', ['ionic'])

.controller('MapCtrl', function ($scope, $ionicLoading) {
  function initialize() {
    var mapOptions = {
      center: new google.maps.LatLng(43.07493, -89.381388),
      zoom: 16,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("map"),
      mapOptions);

    // Stop the side bar from dragging when mousedown/tapdown on the map
    google.maps.event.addDomListener(document.getElementById('map'), 'mousedown', function (e) {
      e.preventDefault();
      return false;
    });

    $scope.map = map;
  }
  google.maps.event.addDomListener(window, 'load', initialize);

  $scope.centerOnMe = function () {
    if (!$scope.map) {
      return;
    }

    $scope.loading = $ionicLoading.show({
      content: 'Getting current location...',
      showBackdrop: false
    });

    navigator.geolocation.getCurrentPosition(function (pos) {
      $scope.map.setCenter(new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude));
      $scope.loading.hide();
    }, function (error) {
      alert('Unable to get location: ' + error.message);
    });
  };
});