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验证 SKProduct 对象的购买状态的方法是什么?您是否必须创建一个支付队列并检查它返回的交易?没有更好的方法吗?
我只想默默地查看购买状态。如果没有存储的购买状态,假设一切都被锁定会更好吗?您如何知道恢复选项是否可用?