Tips for verifying internet connectivity and accessing stored data in localstorage

I'm working on my home.ts file and I need to use localStorage items when the internet connection is offline. However, I am encountering numerous errors when trying to add an IF condition in my code. Specifically, I want to access the getItem method below for '__mydb/_ionickv/DodNalog' if the internet is not available.

    getStorageWarents() {



      this.storage.ready()
        .then(() => {
          this.warrentsInStorage = JSON.parse(localStorage.getItem('__mydb/_ionickv/DodNalog'));
          console.log("Warrents in storage: ", this.warrentsInStorage);

        })
        .then(() => {
          this.getAssignedWarrents();
        })
        .then(() => {
          this.getAllGoods();
        })
        .then(() => {
          this.getAllCancelTypes();
        })
        .then(() => {
          this.getAllDeviceTypes();
        })
        .then(() => {
          this.getAllManufacturers();
        })
        .then(() => {
          this.getAllIntereventionTypes();
        })


  }

Answer №1

If you want to receive updates on Network connection status when connecting or disconnecting, you can implement the Ionic Network plugin in your application.

Network Plugin

Installation:

ionic cordova plugin add cordova-plugin-network-information
npm install @ionic-native/network

How to use?

import { Network } from '@ionic-native/network/ngx';

constructor(private network: Network) { }

Subscribe for Connect/Disconnect event:

let disconnectSub = this.network.onDisconnect().subscribe(() => {
  console.log('Device network was disconnected');
});

let connectSub = this.network.onConnect().subscribe(() => {
  console.log('Device network connected!');
  // We have just established a connection but we may need to determine the type of connection after waiting.
  // It might be necessary to wait before making any API requests as well.
  setTimeout(() => {
      console.log('We have a connection now!');
  }, 3000);
});

To stop listening for the above events, simply unsubscribe:

disconnectSub.unsubscribe();

I hope this guide helps you in monitoring the network connection status effectively.

Reference Link: https://ionicframework.com/docs/native/network

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