Unable to integrate the leaflet-realtime plugin with Angular5 and Ionic at this time

Question

Unable to integrate the leaflet-realtime plugin with Angular5 and Ionic at this time

Having trouble utilizing the leaflet-realtime plugin in my Ionic3 & Angular 5 project

When I import import leaflet from 'leaflet'; in this manner

Upon attempting to implement real-time functionality with the following code snippet

leaflet.realtime({
    url: 'https://wanderdrone.appspot.com/',
    crossOrigin: true,
    type: 'json'
}, {
    interval: 3 * 1000,
    pointToLayer: function (feature, latlng) {
        return leaflet.circleMarker(latlng, geojsonMarkerOptions)
    }
}).addTo(map);

I encounter a WebKit error stating that realtime is not a property of leaflet

Any advice on how to effectively use leaflet plugins within Ionic3 applications?

angular typescript ionic3 leaflet

Answer 1

Answer №1

Apologies for the delay, but I recently encountered a similar situation and managed to find a solution. Here is an example that worked for me, in hopes that it will assist someone else:

example.page.ts

import { Component } from '@angular/core';
import * as L from 'leaflet';
import 'leaflet-realtime';

Implementation within @Component

export class ExamplePage {

    map: any;
    realtime: any;

    constructor() {

    }

    ionViewDidEnter() {

        // Initialize the map
        this.map = L.map('mapRT');

        // Start fetching real-time data
        this.realtime = L.realtime({
                url: 'https://wanderdrone.appspot.com/',
                crossOrigin: true,
                type: 'json'
            }, {
                interval: 3 * 1000
            }).addTo(this.map);

        var map = this.map;
        var realtime = this.realtime;

        this.realtime.on('update', function() {
            map.fitBounds(realtime.getBounds(), {maxZoom: 3});
        });

        // Map layout
        L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png').addTo(this.map);

    }


    ionViewWillLeave() {
        this.realtime.stop();
        this.map.remove();
    }

}

Answer 2

Apologies for the delay, but I recently encountered a similar situation and managed to find a solution. Here is an example that worked for me, in hopes that it will assist someone else:

example.page.ts

import { Component } from '@angular/core';
import * as L from 'leaflet';
import 'leaflet-realtime';

Implementation within @Component

export class ExamplePage {

    map: any;
    realtime: any;

    constructor() {

    }

    ionViewDidEnter() {

        // Initialize the map
        this.map = L.map('mapRT');

        // Start fetching real-time data
        this.realtime = L.realtime({
                url: 'https://wanderdrone.appspot.com/',
                crossOrigin: true,
                type: 'json'
            }, {
                interval: 3 * 1000
            }).addTo(this.map);

        var map = this.map;
        var realtime = this.realtime;

        this.realtime.on('update', function() {
            map.fitBounds(realtime.getBounds(), {maxZoom: 3});
        });

        // Map layout
        L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png').addTo(this.map);

    }


    ionViewWillLeave() {
        this.realtime.stop();
        this.map.remove();
    }

}

Unable to integrate the leaflet-realtime plugin with Angular5 and Ionic at this time

Answer №1

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