Build Mobile Apps with Ionic 4 and Firebase by Fu Cheng

Author:Fu Cheng
Language: eng
Format: epub
ISBN: 9781484237755
Publisher: Apress

constructor(private itemService: ItemService, private loadingCtrl: LoadingController) { }

ngOnInit() {

this.subscription = this.itemService.get().subscribe(items => {

if (items.loading) {

this.showLoading();

return;

}

this.hideLoading();

// code omitted

});

this.doLoad(true);

}

// code omitted

private showLoading(): Promise<void> {

return this.hideLoading().then(() => {

return this.loadingCtrl.create({

message: 'Loading...',

}).then(loading => {

this.loading = loading;

return this.loading.present();

});

});

}

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