import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
-import android.support.v4.app.FragmentActivity;
-import android.support.v4.app.FragmentManager;
+import androidx.fragment.app.FragmentActivity;
+import androidx.fragment.app.FragmentManager;
import android.view.*;
import android.widget.*;
import android.app.AlertDialog;