Ionic App Availability plugin getting Error Object (...) is not a function

Question

I am trying to implement App Availability Feature in ionic. I have an app installed in my device and trying to check if that app exists from another app. But facing an issue in the same, getting the below error

Answer 1

Possibly you are facing mismatch of ionic version of app and the plugin version you installed in your app. In Ionic V3 you no need to import from '../ngx';

Ionic V3 and V4 have Different plugin url

Ionic v3 plugins

Ionic v4 plugins .

For Ionic v3 App availability

 ionic cordova plugin add cordova-plugin-appavailability
 npm install --save @ionic-native/app-availability@4

And for Ionic V4 App availability

ionic cordova plugin add cordova-plugin-appavailability
npm install @ionic-native/app-availability

npm install cmd is different for both version

Try this steps

1. remove plugin
2. Add plugin for ionic V3 compatible from here
3. Try to build now

Answer 2

I had this error: with the Ionic 5/ Capacitor app.

core.js:6479 ERROR Error: Uncaught (in promise): [object String] at resolvePromise (zone.js:1255) at zone.js:1162 at rejected (tslib.es6.js:74) at ZoneDelegate.invoke (zone.js:400) at Object.onInvoke (core.js:28705) at ZoneDelegate.invoke (zone.js:399) at Zone.run (zone.js:160) at zone.js:1318 at ZoneDelegate.invokeTask (zone.js:434) at Object.onInvokeTask (core.js:28692) defaultErrorLogger @ core.js:6479

I have used this code and works fine now. The problem for me was I didn't have Instagram App installed on my device. So it throws an exception. I have handled it like so:

async goToInstagram(): Promise<void> {
    let app: string;

    if (this.platform.is('ios')) {
      app = 'instagram://';
    } else if (this.platform.is('android')) {
      app = 'com.instagram.android';
    }

    try {
      const isAppAvailable = await this.appAvailability.check(app);

      isAppAvailable
        ? this.inAppBrowser.create(`instagram://user?username=${this.item.instagram}`, '_system')
        : this.inAppBrowser.create(`https://www.instagram.com/${this.item.instagram}`, '_system');
    } catch (err) {
      this.inAppBrowser.create(`https://www.instagram.com/${this.item.instagram}`, '_system');
    }
  }