Here Maps not showing in Ionic tabs - ionic-framework

Question

I have a quite basic Here Map in an Ionic tap that is loaded in a Ionic tab with this JavaScript.
var platform = new H.service.Platform({
useCIT: true,
'app_id': $(component).data('appid'),
'app_code': $(component).data('appcode'),
useHTTPS: true
});
// Obtain the default map types from the platform object
var maptypes = platform.createDefaultLayers();
// Instantiate (and display) a map object:
var map = new H.Map(
document.getElementById('mapContainer'),
maptypes.normal.map,
{
zoom: 10,
center: { lng: $(component).data('long'),
lat: $(component).data('lat')
}
});
// Enable the event system on the map instance:
var mapEvents = new H.mapevents.MapEvents(map);
// Add event listeners:
map.addEventListener('tap', function(evt) {
// Log 'tap' and 'mouse' events:
console.log(evt.type, evt.currentPointer.type);
When adding this not in tab 1 the map is not showing. I tried and searched for several things but they only are for Google Maps. How can i get this working in the Ionic tabs?

Answer 1

Please try with following code snippet :
function moveMapToBerlin(map){
map.setCenter({lat:52.5159, lng:13.3777});
map.setZoom(14);
}
/**
* Boilerplate map initialization code starts below:
*/
//Step 1: initialize communication with the platform
// In your own code, replace variable window.apikey with your own apikey
var platform = new H.service.Platform({
apikey: window.apikey
});
var defaultLayers = platform.createDefaultLayers();
//Step 2: initialize a map - this map is centered over Europe
var map = new H.Map(document.getElementById('map'),
defaultLayers.vector.normal.map,{
center: {lat:50, lng:5},
zoom: 4,
pixelRatio: window.devicePixelRatio || 1
});
// add a resize listener to make sure that the map occupies the whole container
window.addEventListener('resize', () => map.getViewPort().resize());
//Step 3: make the map interactive
// MapEvents enables the event system
// Behavior implements default interactions for pan/zoom (also on mobile touch environments)
var behavior = new H.mapevents.Behavior(new H.mapevents.MapEvents(map));
// Create the default UI components
var ui = H.ui.UI.createDefault(map, defaultLayers);
// Now use the map as required...
window.onload = function () {
moveMapToBerlin(map);
}