Android tabs effect

I’m looking to recreate this cool effet for Ionic tabs bar. the underline move.

To replicate the effect, you will need

The code for their tabs is here:

Mainly focus on line 93-102.

Do some research into how they do it. If you are still stuck, I’d be happy to help you out.

ok, i will watch it tank you

I don’t understand…you get that automatically in android mode. Are you trying to get that effect in iOS or web?

No, but in the web browser