How to get directions using activity starter

how to get directions on google map from label using activity starter

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I want that both location get from app

use the Google Maps API
here is an example App Inventor Tutorials and Examples: Coordinates | Pura Vida Apps

Taifun

not working, i stored pickup and drop location in mysql and i want that in the deliver app when click on button it opens google maps showing directions from pickup to drop location

Taifun