I\'m new in android. I want to get contacts data using loaderCallbacks
I write some code but here is some problem I don\'t know why this happen
Can
Since you're using AppCompatActivity and calling getSupportLoaderManager(), i suppose you would like to use the support library implementation of Loader as well.
If so, change the following of your import statements:
import android.app.LoaderManager;
import android.content.CursorLoader;
import android.content.Loader;
To this:
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
If you do not, call getLoaderManager() instead of getSupportLoaderManager().