我正在使用以下代码验证应用内购买收据:
- (void) completeTransaction:(SKPaymentTransaction*) transaction
{
NSData* receipt = nil;
// 1. Attempt <app receipt> first (iOS 7.x)
NSBundle* mainBundle = [NSBundle mainBundle];
if ([mainBundle respondsToSelector:@selector(appStoreReceiptURL)]) {
NSURL* appStoreReceiptURL = [mainBundle appStoreReceiptURL]; // <- CRASH
receipt = [NSData dataWithContentsOfURL:appStoreReceiptURL];
}
// 2. Fallback to <transaction receipt> (iOS < 7.0)
if (!receipt) {
receipt = [transaction transactionReceipt];
}
// 3. Have server verify it with iTunes:
[self verifyReceipt:receipt forTransaction:transaction];
}
在iOS 6设备上,执行到
NSURL* appStoreReceiptURL = [mainBundle appStoreReceiptURL];
这一行时,控制台会报错:-[NSBundle appStoreReceiptURL]: unrecognized selector sent to instance 0x208492d0
。我是否漏掉了什么?难道
-respondsToSelector:
不应该处理这个吗?必须直接检查操作系统版本吗?