using ContentProviderClient vs ContentResolver to access content provider

Question

The documentation on Android content providers describes using a ContentResolver, obtained from getContentResolver(), to access the content.

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Answer 1

I think the another import difference is ContentProviderClient can be cast into your custom provider object and access other method besides CRUD.

ContentProvider cp = getContentResolver().acquireContentProviderClient(mCurUri).getLocalContentProvider();
yourProvider fld = (yourProvider)cp;
fld.query(...);           // you can query as ContentResolver
fld.addFolder(newFolder); // also can invoke the extend method of your custom ContentProvider