How to make bookings from my app
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I am having an android app for an e-shop. So far the user after he chooses an item, he gets a reservation number and then he can call the shop and using this number he can verify the order and he pays it there. What I want is to update my app and make the user be able to order and pay from the app- either with paypal or a cedit card? What should I use? Are there any references, any sample code,any books maybe on that? And how can I make it secure or test it? Is it possible in android or not?