Use npm
and install all packages.
npm i
npm run dev
Follow official guide, Deploying to iOS and Android.
Build application with:
ionic build
Add android project
ionic cap add android
Every time you perform a build (e.g. ionic build) that updates your web directory (default: build), you'll need to copy those changes into your native projects:
ionic cap copy
Note: After making updates to the native portion of the code (such as adding a new plugin), use the sync command:
ionic cap sync
ionic cap open android