Mobile and Offline Developer Guide
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Imperative Apex While Offline
Imperative Apex calls always fail when the client device is offline. When using
imperative Apex in an offline-enabled mobile app, it’s essential to handle the possibility of a
network failure error.
Treat errors as a normal, expected outcome, rather than a failure condition. Provide appropriate feedback to the user, and suggest alternative behavior, rather than treating the situation as unexpected.
// apexImperativeMethod.js
import { LightningElement, track } from 'lwc';
import getContactList from '@salesforce/apex/ContactController.getContactList';
export default class ApexImperativeMethod extends LightningElement {
@track contacts;
@track error;
handleLoad() {
getContactList()
.then(result => {
this.contacts = result;
})
.catch(error => {
this.error = error;
});
}
}Offline-savvy components expect to be offline at times, and know what to do when that happens.