How to soften a click on a tab?

Question

I have a group of tabs:

<ion-tabs>
  <ion-tab [root]="tab1Root" tabTitle="Programmes" tabIcon="icon-programmes"></ion-tab>
  <ion-tab [root]="tab2Root" (ionSelect)="studioCheck()" tabTitle="Studio" tabIcon="icon-studio"></ion-tab>
  <ion-tab [root]="tab3Root" tabTitle="Library" tabIcon="icon-library"></ion-tab>
  <ion-tab [root]="tab4Root" tabTitle="Profile" tabIcon="icon-profile"></ion-tab>
</ion-tabs>

When the user clicks on the second tab ("Studio"), I need to check if they have access to it yet. If they do, great if they don’t, I want to show a notification about the toast and load the first tab.

How can i do this?

I thought that’s return falseenough for studioCheck(), but it’s not.

Typescript:

  studioCheck() {
    console.log('Studio visited');

    // Grab studio selected level
    this.storage.get('studio_level').then((val) => {
      console.log('Storage queried');
      if(val) {
        console.log('Level ID: ', val);
        return true;
      } else {
        // No level selected
        let toast = this.toastCtrl.create({
          message: 'Please choose a programme in order to use the Studio',
          duration: 3000,
          position: 'top'
        });
        toast.present();
        this.navCtrl.parent.select(0);
        return false;
      }
    });
  }

I thought that it might ionSelectnot wait for an asynchronous call storage.get, so I just did return false;at the top of the function, but it does the same.

Any ideas?

Answer 1

customize a view like this

<ion-tabs #tabs>
  <ion-tab [root]="tab1Root" tabTitle="Programmes" tabIcon="icon-programmes"></ion-tab>
  <ion-tab [root]="tab2Root" (ionSelect)="studioCheck()" tabTitle="Studio" tabIcon="icon-studio"></ion-tab>
  <ion-tab [root]="tab3Root" tabTitle="Library" tabIcon="icon-library"></ion-tab>
  <ion-tab [root]="tab4Root" tabTitle="Profile" tabIcon="icon-profile"></ion-tab>
</ion-tabs>

:

export class MyPage {
    @ViewChild("tabs") public tabs: Tabs;
    ...

    studioCheck() {
        console.log('Studio visited');

        // Grab studio selected level
        this.storage.get('studio_level').then((val) => {
            console.log('Storage queried');
            if(val) {
                console.log('Level ID: ', val);
                return true;
            } else {
                // No level selected
                let toast = this.toastCtrl.create({
                  message: 'Please choose a programme in order to use the Studio',
                  duration: 3000,
                  position: 'top'
                });
                toast.present();
                this.tabs.select(0);
            }
        });
    }
}

• , Tabs select .
• , ionSelect , .
• - this.storage.get, , return false; studioCheck