Android duplicate provider authority problem

Question

We\'re trying to publish a pay ad-free version of a casual app that\'s currently published free with ads. We refactored all package names to com.mycompanyname.appname.

Answer 1

Lets say your library package is com.android.app.library free package is com.android.app.free paid package is com.android.app.paid

In your free project and paid project, make an identical file in a package which can be anything, but must be the same.

Example:

1. Create a new package in your free version with com.android.app.data

2. Create a file called Authority.java and inside (Authority.java) put:

   public class Authority {

   `public static final String CONTENT_AUTHORITY = "YOUR PROVIDER";`
   

   }

3. Repeat this for the paid version, remember to keep the package name the same and class name.

Now, in your contract file, in your library use the following:

public static String AUTHORITY = initAuthority();

    private static String initAuthority() {
        String authority = "something.went.wrong.if.this.is.used";

        try {

            ClassLoader loader = Contract.class.getClassLoader();

            Class clz = loader.loadClass("com.android.app.data.Authority");
            Field declaredField = clz.getDeclaredField("CONTENT_AUTHORITY");

            authority = declaredField.get(null).toString();
        } catch (ClassNotFoundException e) {} 
        catch (NoSuchFieldException e) {} 
        catch (IllegalArgumentException e) {
        } catch (IllegalAccessException e) {
        }

        return authority;
    }

    public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY);

Now you should be able to use two authorities.

Credit: Ian Warick Android - Having Provider authority in the app project