Use the paid-for app unlocks the free-app approach then you don't need to share the database. In the free just test for the presence of your paid-for unlock app. If you find it run with full functionality, if you don't then run just with the restricted functionality of the free- app.
This make upgrading from free to paid very simple and also gives you less code to maintain. Have a read of threads: http://groups.google.com/group/android-developers/browse_thread/thread/ba56064a2e6b33f4 http://groups.google.com/group/android-beginners/browse_thread/thread/7d5698ab66aadd62 -- RichardC On Oct 27, 7:26 am, skyhigh <[email protected]> wrote: > I am to the point in developing my paid application version where I > need to implement the support for copying the database. > > I found that using CONTEXT_IGNORE_SECURITY gets me past the call to > createPackageContext without a SecurityException, but it does not > allow me to access the database files from my free version. I have > given both my free and paid applications the same shared user id > string, but when I use CONTEXT_INCLUDE_CODE I am still getting a > SecurityException when I call createPackageContext. > > In my manifest file for both the free and paid versions of my > application I have set: > android:sharedUserId="@string/shared_user_id" > and in the strings.xml file I have set: > <string name="shared_user_id">myappname</string> > > However when I call createPackageContext with the parameter > CONTEXT_INCLUDE_CODE it generates the SecurityException: > Requesting code from com.mydomain.myappnamefree (with uid 10033) to > be run in process com.mydomain.myappnamepaid (with uid 10049) > > Since the SecurityException is showing two different uid's it seems > that setting the sharedUserId in the manifest file didn't actually > result in both apps getting the same user id. > > The code I am trying to use to copy the database, from my free app, > when my paid app starts up is: > > public static void readPreviousPackageDb(Context myContext) > { > File myDbFile = myContext.getDatabasePath(DATABASE_NAME); > if (myDbFile.exists()) { > // Paid app database already exists > return; > } > > Context freeContext = null; > try { > freeContext = myContext.createPackageContext( > FREE_VERSION_PACKAGE_NAME, > Context.CONTEXT_INCLUDE_CODE); > if (freeContext == null) { > // Free version is not installed > return; > } > } catch (Exception e) { > String error = e.getMessage(); > Log.e(TAG, "Could not copy previous edition database > " + > error); > return; > } > File freeDbFile = freeContext.getDatabasePath(DATABASE_NAME); > if (!freeDbFile.exists()) { > Log.e(TAG, "Free database file is missing"); > return; > } > long freeDbSize = freeDbFile.length(); > Log.v(TAG, "File size is " + freeDbSize + " for file " + > freeDbFile.getAbsolutePath()); > try { > //FileInputStream inputStream = new > FileInputStream(freeDbFile); > InputStream inputStream = freeContext.getAssets().open > (freeDbFile.getAbsolutePath()); > myDbFile.createNewFile(); > FileOutputStream outputStream = new > FileOutputStream(myDbFile); > byte buffer[] = new byte[2048]; > long copySize = 0; > do { > int bytesRead = inputStream.read(buffer); > if (bytesRead <= 0) { > break; > } > outputStream.write(buffer, 0, bytesRead); > copySize += bytesRead; > } while (true); > Log.i(TAG, "Copied " + copySize + " of " + > freeDbSize); > inputStream.close(); > outputStream.close(); > } catch (FileNotFoundException e) { > String error = e.getMessage(); > Log.e(TAG, "Can't copy database from previous edition > " + error); > } catch (SecurityException e) { > String error = e.getMessage(); > Log.e(TAG, "Can't copy database from previous edition > " + error); > } catch (IOException e) { > String error = e.getMessage(); > Log.e(TAG, "Can't copy database from previous edition > " + error); > } > } > > I have tried generating a signed version of my app and installing it, > in case the shared user id does not work with unsigned debug code, but > that didn't seem to change the behavior at all. > > I would really appreciate some help, as I cannot figure out why my two > versions of the application are getting assigned different uids by > Android when they both have the same shared user id string value. > > If I use CONTEXT_IGNORE_SECURITY instead of CONTEXT_INCLUDE_CODE it > gets past the call to createPackageContext without any > SecurityException. It is able to detect that the free database file > exists and can see the correct size of this file. But when I call to > create the InputStream it generates a FileNotFoundException. > > I am guessing that the problem is because the SecurityException > reports that each application has a different UID. However since I > specified the same sharedUserId in the manifest file for both > applications I don't understand why they have different UID values. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
