import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
-import android.preference.PreferenceManager;
import android.util.SparseBooleanArray;
import android.view.ActionMode;
import android.view.Menu;
import androidx.core.content.ContextCompat;
import androidx.cursoradapter.widget.CursorAdapter;
import androidx.fragment.app.DialogFragment; // The AndroidX dialog fragment must be used or an error is produced on API <=22.
+import androidx.preference.PreferenceManager;
import com.google.android.material.snackbar.Snackbar;