上一个项目用到了In App Purchase,发现现在大家对这个挺关注的，把上次写的总结贴出来给大家看一下，希望对大家有点帮助!
一、有关如何在程序中加入In APP Purchase 的内容参考下面的连接
二、我的程序具体步骤
1.添加Storekit.Framework,编写自己的storeObsever，用于处理交易，代码如下，其中completeTransaction 和failedTransaction两个函数是自定义的用来处理交易成功与失败其它的就都是SKPaymentTransactionObserver 这个代理要求的。
- #import <Foundation/Foundation.h>
- #import <StoreKit/StoreKit.h>
- #import <StoreKit/SKPaymentTransaction.h>
- @interface MyStoreObserver : NSObject < SKPaymentTransactionObserver > {
- }
- - (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions;
- -(void) PurchasedTransaction: (SKPaymentTransaction *)transaction;
- - (void) completeTransaction: (SKPaymentTransaction *)transaction;
- - (void) failedTransaction: (SKPaymentTransaction *)transaction;
- -(void) paymentQueueRestoreCompletedTransactionsFinished: (SKPaymentTransaction *)transaction;
- -(void) paymentQueue:(SKPaymentQueue *) paymentQueue restoreCompletedTransactionsFailedWithError:(NSError *)error;
- @end
- - (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions函数用来更新transactions的状态
- - (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
- for (SKPaymentTransaction* transaction in transactions) {
- switch (transaction.transactionState) {
- case SKPaymentTransactionStatePurchased:
- [self completeTransaction:transaction];
- break;
- case SKPaymentTransactionStateFailed:
- [self failedTransaction:transaction];
- break;
- case SKPaymentTransactionStateRestored:
- break;
- default:
- break;
- }
- }
- }
2.在程序中添加storeObsever,最好在applicationDidFinishLaunching中添加
- MyStoreObserver *tempObserver = [[MyStoreObserver alloc] init];
- self.observer = tempObserver;
- [tempObserver release];
- [[SKPaymentQueue defaultQueue] addTransactionObserver:self.observer];
3.发送付费请求,在相应的类中实现SKProductsRequestDelegate，别忘记定义自己产品的identifier
- //请求产品信息
- #define kMyFeatureIdentifier yourProductIdentifiers （你自己的产品identifiers)
- SKProductsRequest *request= [[SKProductsRequest alloc] initWithProductIdentifiers:
- [NSSet setWithObject: kMyFeatureIdentifier]];
- request.delegate = self;
- [request start];
代理方法相关代码,如果请求成功的话就可以发送付费请求
- #pragma mark request delegate
- //!收到产品的消息
- - (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response{
- SKPayment *payment = [SKPayment paymentWithProductIdentifier:kMyFeatureIdentifier];
- [[SKPaymentQueue defaultQueue] addPayment:payment];
- [request autorelease];
- }
- - (void)request:(SKRequest *)request didFailWithError:(NSError *)error{
- UIAlertView *alerView = [[UIAlertView alloc] initWithTitle:@"Alert" message:[error localizedDescription] delegate:nil c
- ancelButtonTitle:NSLocalizedString(@"Close",nil) otherButtonTitles:nil]; [alerView show]; [alerView release];
- }
4.接下来就是Apple自己的付费相关处理了，需要做是就是点击按钮来确定付费
5.交易完成后需要向Apple验证这次交易是否成功，要不然没成功就把产品给别人的话，那就亏了，在１中可以看到当交易成功时会调用自定义的 completeTransaction函数，在该函数中我们需要验证transactionReceipt 关于验证SKPaymentTransaction的transactionReceipt transactionReceipt是只有当 SKPaymentTransaction完成时，即transactionState 被设置为SKPaymentTransactionStatePurchased 或 SKPaymentTransactionStateRestored时才被创建，因此只有这两种状态下能去验证transactionReceipt
原始思路及具体步骤如下:
a、从SKPaymentTranscation的实例中将transactionReceipt转化为NSString
- NSString *temptransactionReceipt = [[NSString alloc] initWithData:[mytransaction transactionReceipt] encoding:NSUTF8StringEncoding];
如果用NSLog的方法将其写出来显示如下,里边有很多的‘+’
- { "signature" =
- "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"; "purchase-info" = "ewoJIml0ZW0taWQiID0gIjMzMDU5OTg4MCI7Cgkib3JpZ2luYWwtdHJhbnNhY3Rpb24taWQiID0gIjEwMDAwMDAwMDAwOTEyNTgiOwoJInB1cmNoYXNlLWRhdGUiID0gIjIwMDktMTAtMTQgMDY6MDY6NTQgRXRjL0dNVCI7CgkicHJvZHVjdC1pZCIgPSAiY29tLnNlbnNreS5jbmFtZXNpZ3B1cmNoYXNlY29uc3VtYWJsZSI7CgkidHJhbnNhY3Rpb24taWQiID0gIjEwMDAwMDAwMDAwOTEyNTgiOwoJInF1YW50aXR5IiA9ICIxIjsKCSJvcmlnaW5hbC1wdXJjaGFzZS1kYXRlIiA9ICIyMDA5LTEwLTE0IDA2OjA2OjU0IEV0Yy9HTVQiOwoJImJpZCIgPSAiY29tLnNlbnNreS5jc2lnbmF0dXJlYXBwIjsKCSJidnJzIiA9ICIxLjAiOwp9"; "pod" = "100"; "signing-status" = "0";}
b、然后通过Post的方法将其提交给服务器,在这里只是将transactionReceipt传给服务器，验证由服务器完成。代码如下，
- NSString *requestStirng =[NSString stringWithFormat: @"receipt_data=%@",temptransactioReceipt];
- requestStirng = [requestStirng stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
- NSData *postData = [NSData dataWithBytes:[requestStirng UTF8String] length:[requestStirng length]];
- NSMutableURLRequest *connectionRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[kURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
- [connectionRequest setHTTPMethod:@"POST"];
- [connectionRequest setTimeoutInterval:120.0];
- [connectionRequest setCachePolicy:NSURLRequestUseProtocolCachePolicy];
- [connectionRequest setHTTPBody:postData];
出现的错误，服务器用传过去的receipt_data向Apple验证，通不过，但将用NSLog的方法在后台写出的 temptransactionreceipt向Apple验证能通过 错误原因 对比发现通过URL传给服务器的字符串不能很好的完成urlEncode，在里边出现的+不能自动进行编码转化，因为在Objective-C 中不能将NSString 真正的实现URL encode ,
解决方法可参考下面的地址
http://simonwoodside.com/weblog/2009/4/22/how_to_really_url_encode/
但当我用上面地址给出的方法进行编码后仍不能解决该问题,原因不明
解决办法:
在将transactionReceipt转化成的NSString传给服务器之前先进行转化，将里边的+转换为%2B ， 将步骤a中的代码改为
- NSString *temptransactionReceipt = [[NSString alloc] initWithData:[mytransaction transactionReceipt] encoding:NSUTF8StringEncoding];
- temptransactionReceipt = [temptransactionReceipt stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];
6.服务器端验证相关代码 其中XML为自定义的一个类，getHeader所做的工作就是把receipt数据Post给Apple然后得到返回的结果返回
- $url = "https://buy.itunes.apple.com/verifyReceipt";/ $receipt = json_encode(array("receipt-data" => base64_encode($receipt_data)));
- $response_json = $Xml->getHeader($url, $receipt);
- $response = json_decode($response_json['content'], true);
- getHeader的代码如下 public function getHeader($url, $data) {
- $ch = curl_init();
- $timeout = 300; // set to zero for no timeout
- curl_setopt($ch, CURLOPT_URL, $url);
- // curl_setopt($ch, CURLOPT_ENCODING, 'gzip');
- curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1); //post到https
- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
- curl_setopt($ch, CURLOPT_POST, true);
- curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
- curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);//跟随页面的跳转
- // curl_setopt($ch, CURLOPT_HEADER, true);
- curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
- $handles = curl_exec($ch);
- $header = curl_getinfo($ch);
- curl_close($ch);
- $header['content'] = $handles;
- return $header;
- }
把自己写的测试的例子传上来供大家参考下
下载Demo例子源码下载地址：http://down.51cto.com/data/611901
