Hello, I was really wondering the same thing (for a different purpose), however no-one clearly answered your original question here, so I've actually tested it directly.
First thing, I had to modify the LVL library to take a package name and version code as parameter instead of using the current app's information automatically. Without the other paid app installed, I received a ERROR_INVALID_PACKAGE_NAME. Once the other paid app was installed, I unfortunately received a ERROR_NON_MATCHING_UID. As I couldn't find any UID information in the LVL library, the answer is now pretty clear: it's not possible. On Thursday, January 6, 2011 1:27:25 AM UTC+1, andfan22 wrote: > > Hi all > > Just wondering if I can use LVL to check that the user is licensed to > use a DIFFERENT app from the current one -- ie. one with a different > package name. > > Why would I want to do this? I'm developing an app which I'm > considering publishing using a free + pro license model. The main app > would be a free, ad supported app. To turn off ads the user would > purchase a pro license key from the market (published as a paid app > containing no functionality). The user would continune to use the app > that was downloaded for free, which checks if the paid app is > installed, and if so it disables ads. I prefer this model to a fully > featured paid app model, as it eliminates the need to migrate data > from the free version to the paid when the user upgrades. > > Under this model I would like the free app to check if the paid app is > installed, and if so the free app would then use LVL to check if the > user has purchased the paid app via the market. Will it be possible > for the free app to pass the package name of the paid app to LVL, and > to get back a result confirming whether the paid app has been > purchased or not? > > Looking at the LVL source code I suspect I can do this by modifying > the constructor of LicenseChecker to set mPAckageName to a supplied > argument rather than setting it to mContext.getPackageName(). > > Are there any gotcha's I may be missing? > > Thanks ... > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
