The code below is taken directly from arcgis via react on how to display a map.
If i wanted to say, zoom in to a set of coordinates, but the code for that was set in another component, how can i get that component to talk to the map here in this component?
import Map from '@arcgis/core/Map';
import MapView from '@arcgis/core/views/MapView';
const map = new Map({
basemap: "topo-vector"
});
const view = new MapView({
container: "viewDiv",
map: map
});
I resolved this by using redux toolkit to set the map as a global state object.
dispatch(updateMapViewState(view));
updateMapViewState: (state, action) => {
state.view = action.payload
},
Then, when i want to use the map in a separate component, i do:
const view = useSelector((state) => state.MapSlice.view);
In this way, all components can access the map outside of the useEffect in the map component, and can manipulate it without creating a new map view. This worked for me. I assume you could probably do this with context api, but we aren't using that as a global state manager.