Ionic 2 - List does not update - list

Question

I have an ion-list with a ngFor loop. Here is the html:
<ion-list>
<ion-item *ngFor="let kiosk of kiosks" (click)="goToKioskProfilePage(kiosk)">
{{kiosk.name}}
</ion-item>
</ion-list>
And here is the constructor:
kiosks: any;
constructor(public navCtrl: NavController, navParams: NavParams, public locationTracker: LocationTracker, public api: ApiService, public zone: NgZone) {
this.kiosks = [];
this.zone.run(() => {
this.locationTracker.getGeolocation().then(location => {
this.api.getClosestKiosks(location, constants.AMOUNT_OF_CLOSEST_KIOSKS).then(
data => {
console.log("ready");
this.kiosks = data['data'];
},
err => {
console.log(err);
}
);
});
});
}
The console logs "ready" but the list does not update. I already tried it with NgZone but it's still not working. Only when I open the sidemenu the list updates, but not before. Someone know how to fix that?

Answer 1

I've encountered a similar issue before. What fixed it for me was putting only the variable update/assignment in between zone.run(), as it's after the promise resolves that you want to update the values.
Try:
this.locationTracker.getGeolocation().then(location => {
this.api.getClosestKiosks(location, constants.AMOUNT_OF_CLOSEST_KIOSKS).then(
data => {
console.log("ready");
this.zone.run(() => {
this.kiosks = data['data'];
});
},
err => {
console.log(err);
}
);
});