Can we use SWIFT for android apps ?

Answer 1

Interesting question. Currently no.

But there is a new OS Google is working on, Fuchsia OS

http://www.androidpolice.com/2017/11/20/google-working-fuchsia-os-support-apples-swift-programming-language/

It’s not clear what Fuchsia OS will be used for.

Answer 2

Unfortunately nope, programming languages are designed to run in a specific runtime environment supported by the machine and Android doesn't support it.

Just in case if you're interested, the first-class citizen for building Android apps are Java and Kotlin. 😉

Answer 3

Swift is for iOS apps.

Answer 4

Swift is iOS only, sadly it cannot be supported by android but there have been rumours of android and iOS being supported together (not with their permissions of course)