集成Android IAP API

private SampleIapManager sampleIapManager; //商店购买收据数据（可选）
protected void onCreate(final Bundle savedInstanceState) //在onCreate中实现PurchasingListener
{
  super.onCreate(savedInstanceState);
  //setupApplicationSpecificOnCreate();
  setupIAPOnCreate();
}

private void setupIAPOnCreate() {
  sampleIapManager = new SampleIapManager(this);

  final SamplePurchasingListener purchasingListener = new SamplePurchasingListener(sampleIapManager);
  Log.d(TAG, "onCreate: registering PurchasingListener");

  PurchasingService.registerListener(this.getApplicationContext(), purchasingListener);

  Log.d(TAG, "IS_SANDBOX_MODE:" + PurchasingService.IS_SANDBOX_MODE); //检查应用是否处于测试模式
}

// ...
private String currentUserId =  null ;
private String currentMarketplace =  null ;

// ...

public void onUserDataResponse( final UserDataResponse response) {

 final UserDataResponse.RequestStatus status = response.getRequestStatus();

 switch (status) {
   case SUCCESSFUL:
	 currentUserId = response.getUserData().getUserId();
	 currentMarketplace = response.getUserData().getMarketplace();
	 break ;

   case FAILED:
   case NOT_SUPPORTED:
	 // 失败。
	 break ;
 }
}

@Override
protected void onResume() //仅调用onResume中的getPurchaseUpdates
{
  super.onResume();

//...

  PurchasingService.getUserData();

//...

  PurchasingService.getPurchaseUpdates(false);
}

public class MyPurchasingListener  implements PurchasingListener {
   boolean reset =  false ;
   //...

   public void onPurchaseUpdatesResponse( final PurchaseUpdatesResponse response) {
     //...
     // 处理收据
     switch (response.getPurchaseUpdatesRequestStatus()) {
       case SUCCESSFUL:
         for ( final Receipt receipt : response.getReceipts()) {
           // 处理收据
         }
         if (response.hasMore()) {
           PurchasingService.getPurchaseUpdates(reset);
         }
         break ;
       case FAILED:
         break ;
     }
   }
   //...
}

public void onPurchaseUpdatesResponse(final PurchaseUpdatesResponse response) {
// ....
switch (status) {
case SUCCESSFUL:
	iapManager.setAmazonUserId(response.getUserData().getUserId(), response.getUserData().getMarketplace());
	for (final Receipt receipt : response.getReceipts()) {
		iapManager.handleReceipt(receipt, response.getUserData());
	}
	if (response.hasMore()) {
		PurchasingService.getPurchaseUpdates(false);
	}
	iapManager.refreshOranges();
	break;
}
// ...
}              

protected void onResume() //仅在onResume中验证产品SKU
{
   super.onResume();

   // ...

   final Set <string>productSkus =  new HashSet<string>();
   productSkus.add( "com.amazon.example.iap.consumable" );
   productSkus.add( "com.amazon.example.iap.entitlement" );
   productSkus.add( "com.amazon.example.iap.subscription" );
   PurchasingService.getProductData(productSkus); //触发Purchase.Listener.onProductDataResponse()

   Log.v(TAG,  "Validating SKUs with Amazon" );
   }

public class MyPurchasingListener  implements PurchasingListener {
   //  ...

   public void onProductDataResponse( final ProductDataResponse response) {
     switch (response.getRequestStatus()) {
       case SUCCESSFUL:
         for ( final String s : response.getUnavailableSkus()) {
           Log.v(TAG,  "不可用SKU：" + s);
         }

         final Map <string,>products = response.getProductData();
         for ( final String key : products.keySet()) {
           Product product = products.get(key);
           Log.v(TAG, String.format( "产品：%s\n 类型：%s\n SKU：%s\n 价格：%s\n 描述：%s\n" , product.getTitle(), product.getProductType(), product.getSku(), product.getPrice(), product.getDescription()));
         }
         break ;

       case FAILED:
         Log.v(TAG,  "ProductDataRequestStatus: FAILED" );
         break ;
     }
   }

   //  ...
}

  public void onBuyOrangeClick(final View view) {
     final RequestId requestId = PurchasingService.purchase(MySku.ORANGE.getSku());
     Log.d(TAG, "onBuyOrangeClick: requestId (" + requestId + ")");
  }

public void onPurchaseResponse(final PurchaseResponse response) {
	switch (status) {
		// ...
		case SUCCESSFUL:
			final Receipt receipt = response.getReceipt();
			iapManager.setAmazonUserId(response.getUserData().getUserId(), response.getUserData().getMarketplace());
			Log.d(TAG, "onPurchaseResponse: receipt json:" + receipt.toJSON());
			iapManager.handleReceipt(receipt, response.getUserData());
			iapManager.refreshOranges();
			break;
	}
}

    public void handleConsumablePurchase(final Receipt receipt, final UserData userData) {
        try {
            if (receipt.isCanceled()) {
                revokeConsumablePurchase(receipt, userData);
            } else {
                // 我们强烈建议您在服务器端验证收据
                if (!verifyReceiptFromYourService(receipt.getReceiptId(), userData)) {
                    // 如果无法验证购买，
                    // 请向客户显示相关的错误消息。
                    mainActivity.showMessage("无法验证购买，请稍后重试。");
                    return;
                }
                if (receiptAlreadyFulfilled(receipt.getReceiptId(), userData)) {
                    // 如果之前已履行收据，则只需再次通知亚马逊
                    // 应用商店收据已履行。
                    PurchasingService.notifyFulfillment(receipt.getReceiptId(), FulfillmentResult.FULFILLED);
                    return;
                }

                grantConsumablePurchase(receipt, userData);
            }
            return;
        } catch (final Throwable e) {
            mainActivity.showMessage("无法完成购买，请稍后重试。");
        }
    }

private void grantConsumablePurchase(final Receipt receipt, final UserData userData) {
    try {
        // 以下示例代码是一个简单实现，请
        // 实现您自己的授予逻辑，使之具有线程安全、事务性和稳定性
        //的特点

        // 在您的应用/服务器中创建购买信息，
        //并向客户授予购买 - 在本例中将为客户
        // 提供一个橙子
        createPurchase(receipt.getReceiptId(), userData.getUserId());
        final MySku mySku = MySku.fromSku(receipt.getSku(), userIapData.getAmazonMarketplace());
        // 验证SKU是否仍然适用。
        if (mySku == null) {
            Log.w(TAG, "收据中的SKU [" + receipt.getSku() + "]不再有效");
            // 如果SKU不再适用，请使用
            //状态“UNAVAILABLE”调用PurchasingService.notifyFulfillment
            updatePurchaseStatus(receipt.getReceiptId(), null, PurchaseStatus.UNAVAILABLE);
            PurchasingService.notifyFulfillment(receipt.getReceiptId(), FulfillmentResult.UNAVAILABLE);
            return;
        }

        if (updatePurchaseStatus(receipt.getReceiptId(), PurchaseStatus.PAID, PurchaseStatus.FULFILLED)) {
            // 更新SQLite数据库中的购买状态成功
            userIapData.setRemainingOranges(userIapData.getRemainingOranges() + 1);
            saveUserIapData();
            Log.i(TAG, "已成功将购买从PAID更新为FULFILLED，收据ID为：" + receipt.getReceiptId());
            //将状态更新到亚马逊应用商店。在收到购买的
            // Fulfilled状态后，亚马逊不会再尝试将
            // 购买收据发送到应用程序
            PurchasingService.notifyFulfillment(receipt.getReceiptId(), FulfillmentResult.FULFILLED);
        } else {
            //更新SQLite数据库中的购买状态失败 - 状态
            // 已更改。
            // 通常意味着同一收据由另一个
            // onPurchaseResponse或onPurchaseUpdatesResponse回调更新。
            // 只需接受错误并将其记录在本示例代码中即可
            Log.w(TAG, "未能将购买从PAID更新为FULFILLED，收据ID为：" + receipt.getReceiptId()
                       + "，状态已更改。");
        }

    } catch (final Throwable e) {
        // 不管出于任何原因，如果该应用无法履行购买，
        // 请在此处添加您自己的错误处理代码。
        // 在您下次调用PurchasingService.getPurchaseUpdates API时，
        // 亚马逊会尝试再次发送消费品购买收据
        Log.e(TAG, "未能授予消费品购买，错误为" + e.getMessage());
    }
}