如何将paypal交易证明发送到服务器，以便在iPhone中确认和完成交易

我通过NSlog显示NSDictionary，结果如下 这是您的付款证明：

{
client =     {
    environment = sandbox;
    "paypal_sdk_version" = "1.0.5";
    platform = iOS;
    "product_name" = "PayPal iOS SDK";
};
payment =     {
    amount = "190.50";
    "currency_code" = USD;
    "short_description" = Vegetables;
};
"proof_of_payment" =     {
    "adaptive_payment" =         {
        "app_id" = "APP-80W284485P519543T";
        "pay_key" = "AP-0W362760MW159460W";
        "payment_exec_status" = COMPLETED;
        timestamp = "2013-07-25T04:12:46.646-07:00";
    };
};

我读过文件

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通过这个链接，我了解到PayPalRESTAPI使用OAuth 2.0框架进行授权。现在如何处理这个结果来查看我的paypal帐户（沙箱）中的一些真实的流动交易？下一步怎么办？我已经解析了JSON，但是如何通过简单地将这些值存储在变量中来处理它们呢？谢谢

当您与Paypal的交易完成后，您将获得“payKey” 在pay paymentSuccessWithKey委托方法中。您可以在此处调用web服务以将结果存储到服务器

#pragma mark PayPalPaymentDelegate methods

-(void)paymentSuccessWithKey:(NSString *)payKey andStatus:(PayPalPaymentStatus)status; {
    paymentStatus = PAYMENTSTATUS_SUCCESS;
    NSLog(@"...payKey...........%@", payKey);
    [self performSelector:@selector(tellserverYouHavePaid:) withObject:payKey afterDelay:0.2];

}

-(void)tellserverYouHavePaid{
//call your web services here
}