Tutorial

Implementing a Loading Indicator in Ionic 2

Published on November 2, 2016
    author

    Alligator.io

    Implementing a Loading Indicator in Ionic 2

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    Ionic 2’s LoadingController allows to create an overlay indicator that appears while the app is doing something in the background. It’s a great way to indicate to the user that the app is working. Here’s how to implement it.

    First you import LoadingController from ionic-angular:

    import { LoadingController } from 'ionic-angular';
    

    Then you inject LoadingController in your component’s class constructor:

    constructor(public loading: LoadingController) {}
    

    And now let’s create a loading controller in the ionViewLoaded() lifecycle hook available in Ionic 2, for when the page loads. Notice how the Loading Controller returns a promise, so then() can be called on it:

    ionViewLoaded() {
      let loader = this.loading.create({
        content: 'Getting latest entries...',
      });
    
    
    

    The dismiss() method on the loader makes sure that we remove it when the app is ready.

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