Author ：JerryYang
Create by 2021.03.24

环境：
Unity：2020.3.0f1c1

一、后台商品配置

1. 进入苹果开发者后台，填写税务信息，银行信息（不填会出现购买失败）；
2. 选择你要添加内购的应用，找到 In-App Purchases 选项，点击 Manage；
   
   选择你要添加内购的应用
3. 点击添加商品，然后完善商品信息；

注意：这里要填写所以信息，包括截图，直到状态为 Ready to Submit 为止，不然也会出现购买失败

添加商品

二、unity API接入

1. 点击 manage service 打开services面板；

   
   
   Services
2. 选择一个组织，没有的话创建一个；

3. 根据提示打开Purchasing，导入包，如果需要更新，请点击update；

   
   
   导入

4. 购买功能可以通过unity提供的组件实现，也可以用代码实现，我们选择用代码实现。

   
   
   Unity IAP

三、代码部分

using UnityEngine;
using UnityEngine.Purchasing;
using System;

public class PurchasingManager : IStoreListener
{
    public static readonly PurchasingManager Instance = new PurchasingManager();
    private IStoreController storeController;
    private static IExtensionProvider extensionProvider;
    private static IAppleExtensions appleExtension;
    //private static IGooglePlayStoreExtensions googleExtension;

    private Action<string> failedCallback;
    private Action<Product> successedCallback;

    PurchasingManager()
    {
        
    }

    /// <summary>
    /// 初始化商品
    /// 建议在游戏初始化完成的时候就去初始化商品
    /// </summary>
    public void InitProduct()
    {
        if (IsInitialized()) return;
        var module = StandardPurchasingModule.Instance();
        ConfigurationBuilder builder = ConfigurationBuilder.Instance(module);
        builder.AddProduct("goods_coins100", ProductType.Consumable);
        builder.AddProduct("goods_vip7days", ProductType.NonConsumable);
        UnityPurchasing.Initialize(this, builder);
    }

    /// <summary>
    /// 发起内购
    /// </summary>
    /// <param name="_productId">要购买的商品ID</param>
    /// <param name="_successedCallback">购买成功回调</param>
    /// <param name="_failedCallback">购买失败回调</param>
    public void Purchase(string _productId, Action<Product> _successedCallback, Action<string> _failedCallback)
    {
        failedCallback = _failedCallback;
        successedCallback = _successedCallback;

        if (!IsInitialized())
        {
            OnFailedCallback("Not initialized.");
            return;
        }

        var product = storeController.products.WithID(_productId);
        if (product == null || !product.availableToPurchase)
        {
            OnFailedCallback("Either is not found or is not available for purchase");
            return;
        }

        Debug.Log($"Inicializando compra del producto {product.metadata.localizedTitle} en la tienda.");
        storeController.InitiatePurchase(product);
    }

    /// <summary>
    /// IOS恢复内购
    /// Google会在删除应用后，第一次安装是自动恢复
    /// </summary>
    /// <param name="restoreCallback">恢复回调</param>
    public void IosRestore(Action<bool> restoreCallback)
    {
        if (appleExtension != null)
        {
            appleExtension.RestoreTransactions(restoreCallback);
        }
        else
        {
            Debug.LogWarning("IAppleExtensions is null");
            restoreCallback(false);
        }
    }

    //======================================分割线=========================================


    public void OnInitialized(IStoreController controller, IExtensionProvider extensions)
    {
        storeController = controller;
        extensionProvider = extensions;
        appleExtension = extensions.GetExtension<IAppleExtensions>();
        //googleExtension = extensions.GetExtension<IGooglePlayStoreExtensions>();
    }

    public void OnInitializeFailed(InitializationFailureReason error)
    {
        Debug.LogWarning("OnInitializeFailed Reason:" + error);
    }

    public void OnPurchaseFailed(Product product, PurchaseFailureReason failureReason)
    {
        Debug.LogWarning("OnPurchaseFailedproduct:"+ product.transactionID + "  failureReason:"+ failureReason);
    }

    public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs purchaseEvent)
    {
        if (successedCallback != null)
        {
            successedCallback(purchaseEvent.purchasedProduct);
        }
        return PurchaseProcessingResult.Complete;
    }

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

    private void OnFailedCallback(string _reason)
    {
        if (failedCallback != null)
        {
            failedCallback(_reason);
        }
    }
}

四、打包测试

1. 包名一定和你后台的包名对应；

2. 商品ID和类型也要和后台对应；

3. 在苹果开发者后台的用户和访问菜单中找到沙盒，添加沙盒测试人员；

   
   
   添加测试员

4. 在App Store登陆该测试账号；

5. 点击要购买的商品，输入密码，弹出以下弹窗的时候说明购买成功了

   
   
   购买成功

走到这里说明你接成功了，恭喜你。

暂时写这么多，有不懂的或者需要补充的请私信我。