Ionic 4: “Loading Controller” dismiss() is called before present() which will keep spinner without dismissing

Question

I used \"Ionic Loading Controller\" to show a spinner until the data is retrieved then it calls \"dismiss()\" to dismissed it. it works fine, but sometimes when the app alre

Answer 1

Using a list worked better for me

import { Injectable } from '@angular/core';
import { LoadingController } from '@ionic/angular';

@Injectable({providedIn: 'root'})
export class LoadingService {
    private loaders = new Array();
    constructor(public loadingController: LoadingController) { }

    present(options?: object) {
        if (this.loaders.length === 0) {
            this.loadingController.create(options).then(loader => {
                this.loaders.push(loader);
                loader.present();
            });
        }
    }

    async dismiss() {
        if (this.loaders && this.loaders.length > 0) {
            this.loaders.forEach(async loader => {
                await loader.dismiss()
                    .then(() => {
                        loader = null;
                    })
                    .catch(e => console.log(e))
                    .finally(() => this.loaders = new Array());
            });
        }
    }
}