IExtensionProvider.GetExtension

Returns

T 扩展类型。

Description

获取指定类型的特定于商店的扩展。

使用 GetExtension 恢复之前完成的购买交易的示例类：

using UnityEngine;
using UnityEngine.Purchasing;

public class MyStoreClass : MonoBehaviour, IStoreListener
{
    IExtensionProvider m_ExtensionProvider;
    void Awake()
    {
        ConfigurationBuilder builder = ConfigurationBuilder.Instance(StandardPurchasingModule.Instance());
        builder.AddProduct("levelpackfoo", ProductType.NonConsumable);
        UnityPurchasing.Initialize(this, builder);
    }

    public void OnInitialized(IStoreController controller, IExtensionProvider extensions)
    {
        m_ExtensionProvider = extensions;
    }

    public void OnInitializeFailed(InitializationFailureReason error) {}
    public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs e) { return PurchaseProcessingResult.Complete; }
    public void OnPurchaseFailed(Product item, PurchaseFailureReason r) {}
    public void RestoreTransactions()
    {
        if (m_ExtensionProvider != null)
        {
            // NOTICE: No need here for Application.platform tests. Move platform tests to UI.
            // Extensions are designed in a way to work regardless of which platform they are
            // run on. For the UI, only when on Apple platforms display a "Restore Purchases"
            // button, per Apple's In-App Purchase Programming Guide.
            IAppleExtensions apple = m_ExtensionProvider.GetExtension<IAppleExtensions>();
            apple.RestoreTransactions((result) => {
                    // Restore purchases initiated. See ProcessPurchase for any restored transactions.
                });
        }
    }
}