问题描述
Google Play 应用内结算服务{ice,er} V3 将在网络超时条件下返回哪些响应状态代码?这是所有功能中的统一吗?
Which response status code(s) will the Google Play In-App Billing Serv{ice,er} V3 return upon a network timeout condition? Is this uniform amongst all of its functions?
推荐答案
我将在这里描述我的发现.我已经在安装了全功能 GP(GP Store V3.10.10、GP Services 2.0.12、G Services Framework 4.1.2)的 AVD 上测试了这一点，方法是拔掉主机的插头.
I will describe my findings here. I have tested this on an AVD with a fully featured GP installed (GP Store V3.10.10, GP Services 2.0.12, G Services Framework 4.1.2), by pulling the host's plug.
- 如果可能，
getPurchases()方法会返回一个缓存的结果(请注意，我们不是谈论的是服务之外的缓存 这里只是直接调用 getPurchases).当然，这意味着几乎总是会得到一个缓存的结果，除非由于本地数据丢失而重新初始化服务 - 这种情况不太可能并且通常不需要在应用级别. consumePurchase()方法将在假定的内部网络超时 20 秒后返回整数值 6 (BILLING_RESPONSE_RESULT_ERROR)(所以在结果之前增加一点时间代码被调用者看到).尽管BILLING_RESPONSE_RESULT_ERROR被描述为API 操作期间的致命错误，但我还是怀疑这一点，因为这里没有其他错误代码有意义；不幸的是，fatal 这个词对于诸如超时之类的临时情况来说仍然有些不合适.getSkuDetails()的行为似乎与consumePurchase()类似.更新:现在有证据表明getSkuDetails()也可以访问本地服务中的缓存信息.- 如果服务已经知道该项目，那么看起来
getBuyIntent()在没有连接的情况下也能正常工作.这解释了 Hartok 看到空白 GP 购买屏幕的原因:在没有连接的情况下从 IAB V3 获得购买意图不是问题.
- The
getPurchases()method returns a cached result if possible (please note that we're not talking about a cache outside of the Service here but a direct call of getPurchases). Of course, this means that one will almost always get a cached result except when the Service is being re-initialized due to the loss of local data -- a case which is not very likely and often needs not be treated in special ways on the application level. - The
consumePurchase()method will return the integer value 6 (BILLING_RESPONSE_RESULT_ERROR) after a presumed internal net timeout of 20 seconds (so add a bit of time until the result code is seen by the caller). I was suspecting this despiteBILLING_RESPONSE_RESULT_ERRORbeing described as aFatal error during the API actionbecause no other error code would make sense here; unfortunately, the word fatal is still somewhat inappropriate for a temporary condition such as a timeout. getSkuDetails()appears to behave just likeconsumePurchase(). Update: There's now evidence thatgetSkuDetails()can access cached information within the local service, too.- It looks as if
getBuyIntent()works fine without connectivity if the item is already known to the service. This explains why Hartok sees a blank GP purchase screen: It's not a problem to get a buy intent from the IAB V3 without connectivity.
结论:In-App Billing Service V3 似乎可以使用内部缓存和 20 秒的服务器连接超时.对于本地缓存无法解决的服务器通信错误，使用响应代码 6.
Conclusion: The In-App Billing Service V3 appears to work with an internal cache and a server connection timeout of 20 seconds. For server communication errors which the local cache cannot resolve, response code 6 is used.
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