So, in this article, I will be showing you how you can add Google Pay to your Flutter app with literally one button. No card-number form, no CVV field, no "add a payment method" screen. The user taps the Google Pay button, picks a card that Google Pay already knows, confirms with their fingerprint, and the payment data is on its way.
I keep getting asked about payments in Flutter, and after PayPal and Stripe, Google Pay is the one people want next. The good news: it is the easiest of the three, because Google has done the hard work. In this article I'll show you the exact dependencies, the button, the flow, and the pitfalls I hit when I first shipped it — so you don't lose a day to the same setup trap.
Let's jump into the coding part.
Adding the Dependencies
For this purpose, we need to add these dependencies in your pubspec.yaml file:
