Add to home screen is prompt coming even after PWA app installed

Question

Is there an way to check if the PWA app is already installed?

can prompt event can be cancelled may be in 'beforeinstallprompt' event

window.addEventListener('beforeinstallprompt', (event) => {
  // in here        
});

Note: This specifically happening in oneplus 6T (chrome) and all other phones this works fine

Answer 1

If a user is using Google Chrome, the following will be relevant:

Add to Home Screen

By Pete LePage

https://developers.google.com/web/fundamentals/app-install-banners/

Quote:

In order for a user to be able to install your Progressive Web App, it needs to meet the following criteria:

• The web app is not already installed.

Also, when the user has successfully installed the app, there is a callback from the appinstalled event. You can use this to persist the fact that the user has installed the app (perhaps in localStorage or indexedDB):

Quote:

Determine if the app was successfully installed

To determine if the app was successfully added to the user's home screen after they accepted the prompt, you can listen for the appinstalled event.

 window.addEventListener('appinstalled', (evt) => { app.logEvent('a2hs', 'installed'); });