Ionic 4 net::ERR_CONNECTION_REFUSED(http://localhost/)

Question

I\'m facing a problem that when I try to create mobile Front-End application based on Ionic 4 but a net:ERR_CONNECTION_REFUSED(http://localhost/) show up when I run it with

Answer 1

20-09-2020: For Capacitor apps

This didn't work for me: I don't know why.

ionic cap run android -l --external

But this works:

ionic cap run android -l --host=0.0.0.0