s secure approval page inside your app. intlhelps with formatting amounts correctly. Let https://www. paypal. com/checkoutnow?token=$orderId s approval page. finaloutcome=awaitapproveOrder(context,orderId);if(outcome!= ){if(mounted)ScaffoldMessenger. of(context). showSnackBar(constSnackBar(content:Text( )));return;}// 3. Capture on the backend, then confirm to the user. finalcap=awaithttp. post(Uri. parse(