Trouble with initializing the Ionic map controller

I have a mobile app with 5 tabs, one of which features a map. However, the map only loads when directly accessed through the URL bar. It seems that the controller is not loaded when navigating to the map tab through the app, as indicated by console logs. Since the map tab will not be the first one loaded on mobile devices, I need a solution to ensure the controller is properly loaded. I initially believed that the controllers would be called when a tab is clicked, but that does not appear to be the case.

Controller

.controller('MapCtrl', function($scope, $ionicLoading, $compile) {
  // Function to initialize the map
  function initialize() {
    var myLatlng = new google.maps.LatLng(43.07493,-89.381388);

    var mapOptions = {
      center: myLatlng,
      zoom: 16,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };

    var map = new google.maps.Map(document.getElementById("map"),
        mapOptions);

    //Marker, infowindow, and ng-click functionality
    var contentString = "<div><a ng-click='clickTest()'>Click me!</a></div>";
    var compiled = $compile(contentString)($scope);

   // Adding marker and infowindow
    var marker = new google.maps.Marker({
      position: myLatlng,
      map: map,
      title: 'Uluru (Ayers Rock)'
    });

    google.maps.event.addListener(marker, 'click', function() {
      infowindow.open(map,marker);
    });

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

  $scope.centerOnMe = function() {
    // Function to center map on current location
  };

  $scope.clickTest = function() {
    alert('Example of infowindow with ng-click')
  };

})

View

<ion-view view-title="Directions">
    <ion-content>
        <div id="map" class="card" data-tap-disabled="true">
        </div>
    </ion-content>
</ion-view>

Tabs

<ion-tab title="Directions" icon-off="ion-ios-location-outline" icon-on="ion-ios-location" href="#/tab/directions">
   <ion-nav-view name="tab-directions"></ion-nav-view>
</ion-tab>

Router

.state('tab.directions', {
    url: '/directions',
    views: {
        'tab-directions': {
            templateUrl: 'templates/tab-directions.html',
            controller: 'MapCtrl'
         }
    }
})

If you have any questions or need more information, please feel free to ask.

Answer №1

I faced a similar issue and resolved it by executing the function when the view is entered. I made sure to add google.maps.event.trigger( map, 'resize' ); after $scope.map = map; because the map was only loading after refreshing the view.

Below is the code for my controller:

.controller('MapsController', function($scope, $ionicLoading){

$scope.$on( "$ionicView.enter", function( scopes, states ) {
  var myLatlng = new google.maps.LatLng(37.3000, -120.4833);

  var mapOptions = {
    center: myLatlng,
    zoom: 16,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };

  var map = new google.maps.Map(document.getElementById("map"), mapOptions);

  navigator.geolocation.getCurrentPosition(function (pos) {
    map.setCenter(new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude));
    var myLocation = new google.maps.Marker({
      position: new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude),
      map: map,
      title: "My Location"
    });
  });

  $scope.map = map;
  google.maps.event.trigger( map, 'resize' );
 });
});

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