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

Basically what I did is, create an abstract base class for each of my ContentProviders and inherit from that for each app I want to make, overriding the authority path. So in my AbstractContentProvider I have:

public AbstractContentProvider() {
    sURIMatcher.addURI(getAuthority(), BASE_PATH, ITEMS);
    sURIMatcher.addURI(getAuthority(), BASE_PATH + "/#", ITEM_ID);
}

protected abstract String getAuthority();

and then in each subclass I have:

private static final String AUTHORITY = "my.package.app1.ContentProvider";

@Override
protected String getAuthority() {
    return AUTHORITY;
}

In the AndroidManifest I register these with:

Now the trick is, I want to access these content providers in common (library) code, that doesn't know about the app specific classes. To do that, I define a String in my strings.xml, that I override for each app. Then I can use:

Uri.parse(getString(R.string.contentProviderUri))

and in every app the right ContentProvider is used without any conflicts. So basically using the configuration mechanism for dependency injection.