IAP Button

IAP Button is a way to purchase or restore products without writing code.

Adding IAP Button to the Scene

To add an IAP Button to your Scene, in the Unity Editor, select Window > Unity IAP > Create IAP Button.

Handling OnProductFetched

This event will be triggered when IAP retrieves product information from the app stores. It is a good idea to update all text related to the product in the UI with this event such as title, description and price.

On Product Fetched script example:

public class IAPButtonView : MonoBehaviour
{
    [SerializeField]
    Text title;
    [SerializeField]
    TMP_Text price;

    public void OnProductFetched(Product product)
    {
        if (title != null)
        {
            title.text = product.metadata.localizedTitle;
        }

        if (price != null)
        {
            price.text = product.metadata.localizedPriceString;
        }
    }
}

A script like above can be added to the IAPButton to link different views with this event.

Restore Button

Some app stores, including iTunes, require apps to have a Restore button. Codeless IAP provides an easy way to implement a restore button in your app.

To add a Restore button:

1. Add an IAP Button to your Scene (Services > In-App Purchasing > Create IAP Button).
2. With your IAP Button selected, locate its IAP Button (Script) component in the Inspector, then select Restore from the Button Type drop-down menu (most of the component's other fields will disappear from the Inspector view).
3. (Optional) You can add a script by clicking the plus (+) button to add a script to the On Transactions Restored (Boolean, String).
4. (Optional) Drag the GameObject with the restore transactions script onto the event field in the component’s Inspector, then select your function from the dropdown menu.

On Transactions Restored script example:

public void OnTransactionsRestored(bool success, string? error)
{
    Debug.Log($"TransactionsRestored: {success} {error}");
}

When a user selects this button at run time, the button calls the purchase restoration API for the current store. This functionality works on the iOS App Store, the Mac App Store and the Windows Store. You may want to hide the Restore button on other platforms.

Unity IAP will always invoke the On Transactions Restored (Boolean, String) function on the Restore IAP Button with the result and the associated error message if the restore fails. If the restore succeeds, Unity IAP invokes the On Purchase Complete (Product) function on the IAP Button associated with that Product.