Let the free app (main) ask the paid app (the unlocker) run the LVL check and report results using any of the available inter-application communication options available on Android.
As far as security goes - encrypting / signing the communication is one option, signing both apps with the same key and using a signature-protected permission is another. 5 декабря 2011 г. 21:28 пользователь androidmediadeveloper <kamathaj...@gmail.com> написал: > sorry, not clear. the free app can check if the paid app was > purchased ? it is the same publisher. > > also, seems like i can use the android:sharedUserId and write the > license into shared prefs from one app and have the other read from > it. Is this a security issue ? > > thanks > ajith > > On Dec 5, 11:50 am, b0b <pujos.mich...@gmail.com> wrote: >> Yes this is doable if both app have the same userId >> >> You can implement a remote service in the unlocker paid app that check the >> license. >> Then your free app invoke binds to that remote service to do the check. >> >> If both of your apps share the same android:sharedUserId you're not forced >> to make the service public. >> If you don't have already have set a android:sharedUserId don't change it >> afterwards or it will cause problems (file permissions). > > -- > 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 -- 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
