You absolutely want to modify the LVL classes. Not modifing your class is an invitation for automated cracking of your app.
http://android-developers.blogspot.com/2010/09/securing-android-lvl-applications.html On Jan 6, 2:27 pm, Brill Pappin <br...@pappin.ca> wrote: > I like that concept... it would certainly save me some hassle :) > > But, you maybe don't need to modify the LVL classes. > > All you really need is some way to check that they paid for something. > Why not set up a content provider that contains the license details > (you could actually do multiple levels of license then) and simply > fail gracefully if the provider was not present? > > Another way would be to have the paid app write the license key to a > shared preferences location when run. > > I agree that LVL should be able to do all this, but I think Google is > simply not interested in improving LVL to work *with* the market. > > I'd be interested in developing a solution as well. > What I was looking for was paid levels of license (all LVL would > really need to do is return a licensing level instead of a boolean). > > - Brill Pappin > > On Jan 5, 7:27 pm, andfan22 <andfa...@gmail.com> 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 ...- Hide quoted text - > > - Show quoted text - -- 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+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
