Android - Programmatically check internet connection and display dialog if notConnected

Question

I am working on a live project. and when user click on the app. the welcome screen appears(there is a webview on that screen). and if the internet is not connected then the

Answer 1

The fact the your device has network connectivity doesn't mean that you can access internet. It can be a wifi without internet or a data SIM without data package. Starting from API 23 you can use below to check it. You can do it on the UI. Or within a broadcast receiver.

ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
Network currentnetwork = cm.getActiveNetwork();
if (currentnetwork != null) {
        if (cm.getNetworkCapabilities(currentnetwork).hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) && cm.getNetworkCapabilities(currentnetwork).hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) {
            
            // do your stuff. We have internet.
    } else {
            // We have no internet connection.
        }

   } else {
       // We have no internet connection.
   }