> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tonder.io/llms.txt
> Use this file to discover all available pages before exploring further.

# SDK Methods

This page provides a reference for the core methods available in the `InlineCheckout` class of the Flutter Full SDK.

## Core Methods

The Tonder Flutter Full SDK provides these essential methods for initializing, configuring, and rendering the payment interface. Each method serves a specific purpose in the payment integration workflow.

| Method                   | Description                                                                 |
| ------------------------ | --------------------------------------------------------------------------- |
| `new InlineCheckout(..)` | Initializes the SDK with configuration like `apiKeyTonder` and `returnUrl`. |
| `setPaymentData(data)`   | Loads the customer data (name, email, etc.) into the SDK instance.          |
| `setCartTotal(total)`    | Sets the total amount for the transaction.                                  |
| `injectCheckout()`       | Renders the pre-built checkout UI.                                          |

## Method Details

Each method in the Tonder Flutter Full SDK serves a specific purpose in the payment integration workflow. Below you'll find detailed information about each method, including their parameters, usage examples, and practical implementation guidance.

<AccordionGroup>
  <Accordion title="InlineCheckout Constructor">
    Creates a new instance of the InlineCheckout class with the necessary configuration for secure payment processing. This constructor establishes the connection with Tonder's services and configures the payment environment.

    | Parameter             | Type   | Description                                             |
    | --------------------- | ------ | ------------------------------------------------------- |
    | `apiKeyTonder`        | String | Your Tonder API key for authentication                  |
    | `returnUrl`           | String | URL where users are redirected after payment completion |
    | `successUrl`          | String | URL for successful payment redirects                    |
    | `renderPaymentButton` | bool   | Whether to show the SDK's built-in payment button       |

    Here's an example of how to initialize the InlineCheckout class:

    ```dart theme={null}
    InlineCheckout(
      apiKeyTonder: "YOUR_API_KEY",
      returnUrl: "https://your-app.com/return",
      successUrl: "https://your-app.com/success",
      renderPaymentButton: false,
    )
    ```
  </Accordion>

  <Accordion title="setPaymentData">
    Configures the customer information that will be used during the payment process. This data is used to pre-fill the checkout form and associate the transaction with the customer.

    | Parameter | Type                  | Description                                      |
    | --------- | --------------------- | ------------------------------------------------ |
    | `data`    | Map\<String, dynamic> | Customer information including name, email, etc. |

    Here's an example of how to set the customer data:

    ```dart theme={null}
    final customerData = {
      'first_name': 'Juan',
      'last_name': 'Pérez',
      'email': 'juan.perez@example.com'
    };
    _fullPlugin!.setPaymentData(customerData);
    ```
  </Accordion>

  <Accordion title="setCartTotal">
    Sets the total amount for the transaction. This value is displayed in the checkout interface and used for payment processing.

    | Parameter | Type | Description                                  |
    | --------- | ---- | -------------------------------------------- |
    | `total`   | int  | Total amount in cents (e.g., 399 for \$3.99) |

    Here's an example of how to set the cart total:

    ```dart theme={null}
    _fullPlugin!.setCartTotal(399); // $3.99
    ```
  </Accordion>

  <Accordion title="injectCheckout">
    Renders the pre-built payment interface within your Flutter widget. This method creates the complete checkout form with card input fields, validation, and styling.

    | Parameter | Type | Description                     |
    | --------- | ---- | ------------------------------- |
    | None      | -    | This method takes no parameters |

    Here's an example of how to inject the checkout:

    ```dart theme={null}
    await _fullPlugin!.injectCheckout();
    ```
  </Accordion>
</AccordionGroup>

## Next Steps

Now that you're familiar with the available methods in the Flutter Full SDK, explore these guides to enhance your implementation:

* Learn how to [make a payment](/sdk-integration/mobile/flutter-full/make-a-payment) using the Flutter Full SDK.