Unity IAP IOS支付代码

以下是Unity中实现IOS支付的示例代码：

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Purchasing;
using UnityEngine.UI;

public class IAPManager : MonoBehaviour, IStoreListener
{
    private static IStoreController storeController;
    private static IExtensionProvider extensionProvider;

    public Text logText;

    private void Start()
    {
        InitializePurchasing();
    }

    public void InitializePurchasing()
    {
        var builder = ConfigurationBuilder.Instance(StandardPurchasingModule.Instance());
        builder.AddProduct("com.yourgame.product1", ProductType.Consumable, new IDs { { "com.yourgame.product1", AppleAppStore.Name } });
        builder.AddProduct("com.yourgame.product2", ProductType.NonConsumable, new IDs { { "com.yourgame.product2", AppleAppStore.Name } });
        builder.AddProduct("com.yourgame.product3", ProductType.Subscription, new IDs { { "com.yourgame.product3", AppleAppStore.Name } });

        UnityPurchasing.Initialize(this, builder);
    }

    public void BuyProduct(string productId)
    {
        if (storeController != null)
        {
            Product product = storeController.products.WithID(productId);

            if (product != null && product.availableToPurchase)
            {
                storeController.InitiatePurchase(product);
            }
            else
            {
                Log("BuyProductID: " + productId + " fail. Not purchasing product, either is not found or is not available for purchase");
            }
        }
        else
        {
            Log("BuyProductID FAIL. Not initialized.");
        }
    }

    public void RestorePurchases()
    {
        if (!IsInitialized())
        {
            return;
        }

        if (Application.platform == RuntimePlatform.IPhonePlayer || Application.platform == RuntimePlatform.OSXPlayer)
        {
            Log("RestorePurchases started ...");

            var apple = extensionProvider.GetExtension<IAppleExtensions>();
            apple.RestoreTransactions((result) =>
            {
                Log("RestorePurchases continuing: " + result + ". If no further messages, no purchases available to restore.");
            });
        }
        else
        {
            Log("RestorePurchases FAIL. Not supported on this platform. Current = " + Application.platform);
        }
    }

    public bool IsInitialized()
    {
        return storeController != null && extensionProvider != null;
    }

    public void OnInitialized(IStoreController controller, IExtensionProvider extensions)
    {
        Log("OnInitialized: PASS");

        storeController = controller;
        extensionProvider = extensions;
    }

    public void OnInitializeFailed(InitializationFailureReason error)
    {
        Log("OnInitializeFailed InitializationFailureReason:" + error);
    }

    public void OnPurchaseFailed(Product product, PurchaseFailureReason failureReason)
    {
        Log(string.Format("OnPurchaseFailed: FAIL. Product: '{0}', PurchaseFailureReason: {1}", product.definition.id, failureReason));
    }

    public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs args)
    {
        Log(string.Format("ProcessPurchase: PASS. Product: '{0}'", args.purchasedProduct.definition.id));

        // TODO: 按照购买的商品类型处理逻辑

        return PurchaseProcessingResult.Complete;
    }

    private void Log(string message)
    {
        Debug.Log(message);
        logText.text = message;
    }
}

上述代码实现了Unity IAP插件的初始化、商品购买、恢复购买、支付回调等功能。在使用时，需要根据实际情况修改商品ID、商品类型、处理逻辑等信息。同时，需要在Unity IAP控制台中配置相应的商品信息，并在Xcode中进行支付设置和支付回调处理。