How can I solve the issue of ionic, icons not showing in app

问题

Getting an issue with ionic icon
I am using Ionic 4 version and Angular 8
Trying to add qr code icon but no luck

I am using ionic doc https://ionicons.com/

<ion-menu-toggle auto-hide="false">
            <ion-item (click)="scanBarcode()">
              <ion-icon name="qr-code-outline" slot="start"></ion-icon>
              <ion-label>
                Scan QR
              </ion-label>
            </ion-item>
</ion-menu-toggle>

回答1:

You are using Ionic v4, but the Latest Version is Ionic v5. With this Major Upgrade the Icons changed also. When you are searching the Documentation about the ionic v4 Icons: https://ionicons.com/v4/

来源：https://stackoverflow.com/questions/60650750/how-can-i-solve-the-issue-of-ionic-icons-not-showing-in-app