A bit late to this thread, but I do have a few comments relevant to the OP...
On Nov 16, 5:50 pm, Nathan <[email protected]> wrote: > Besides all the other things I need to figure out to build this (I'm > trying the library method), I'd like to transfer preferences smoothly > from DEMO app to paid App. I'm sure that some of you are old hands at > this and can give some advice. I use shared prefs and have code like this when I first start the paid version: final int sigMatch = pkgMgr.checkSignatures(getPackageName(), sourcePkg); if (sigMatch == PackageManager.SIGNATURE_MATCH) { // Import the settings Context importContext; try { importContext = createPackageContext(sourcePkg, 0); } catch (NameNotFoundException e) { return false; } final SharedPreferences importSrc = importContext.getSharedPreferences(sourcePkg + "_preferences", Context.MODE_WORLD_READABLE); final SharedPreferences importDest = this.getSharedPreferences(this.getPackageName() + "_preferences", Context.MODE_WORLD_READABLE); final Editor editor = importDest.edit(); editor.putBoolean("pref_name_1", importSrc.getBoolean("pref_name_1", false)); editor.putString("pref_name_2", importSrc.getString("pref_name_2", "")); // etc, etc } The major caveat here is that your free version needs to have created the prefs as WORLD_READABLE. I did that because I thought I might do something like this someday, and my prefs aren't anything sensitive. But if you didn't do that, then this approach won't work. > I've tried the DEMO and LICENSE, where a license app will unlock the > DEMO app and make it full. Yeah, I've been round that block too. I did eventually get to a place where I wasn't getting complaints; my license had a launcher intent that popped a dialog telling the user to run the "trial", and a button to remove itself from the launcher. Seemed to cover most of the idiots out there. ;^) But the kicker was, my sales increased several-fold when I ditched the trial/license approach in favor of just having separate free & paid versions. My best explanation is that it just makes more sense to novice users; the free/paid paradigm is more widely understood than trial/license. Or, in the words of one of my testers, "I don't want to buy a license, I want to buy the app!" Whatever... the bottom line is free/paid makes more money. String -- 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
