[android-developers] Re: LVL Retry Count

I use the default implementation of the Server Managed Policy (read about it here) for a paid version of my app, and haven't had any problems of note. I haven't had any complaints about false-negatives, or the like -- however, this doesn't mean that it doesn't happen, it just means that if it does, then nobody has complained about it to me.

As for you concerns: 

What problems with the grace period are you referring to? The grace period will actually help you out if the case of "Retry" responses from the server.

As for the licensing implementation with no network access, you shouldn't worry too much about that either. Normally, you get about 10 retries before the 503 error occurs. However, if the user has already checked the license with a Server Managed Policy, then the license is cached on the phone for a period of time. So, if the user starts the app up while their device is in Airplane mode (let's say 10 hours into a 12 hour cross-oceanic flight), then the cached license could still give the user a valid response -- even with no network access. This all depends on the VT extra from the initial license response. I'm not sure what a typical value is, but I know it last at least several hours, if not a day or more (if you wanted you could check out the value yourself by setting a breakpoint in the default implementation). Now, if the user hasn't ever received a valid license check, then it will fail without network connection. At which point, in my app, I ask the user to check for network connectivity and retry.

Something to note: I haven't verified this with anyone on the Android dev team, but I'm pretty sure that once you release your application with LVL enabled on your phone and you don't buy your own app (i.e. you have the release version installed on your device, but haven't actually bought it through the market), then the VT extra in the licensing response is not a date that a typical user will receive. That is, I've found that without actually purchasing the app, the licensing server gives me a validity time which basically disables any valid cached response. Again, I've only seen this once I actually release the app, and have NOT bought it myself.

Nick

--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en