Displaying text 2 column downwards dynamically using xml

I am trying to display the text 2 columns in dynamic rows depending on the data gotten. Below are my code of the adapter and xml file. I am not sure where I have done wrong or how should i do it.

public class BlogAdapter extends ArrayAdapter<String>{
private final Context context;
private final String[] values;

public BlogAdapter(Context context, String[] values) {
    super(context, R.layout.fragment_blogs_list_item, values);
    this.context = context;
    this.values = values;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater) context
                .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        convertView = mInflater.inflate(R.layout.fragment_blogs_list_item, null);
    }
    TextView txtTitle = (TextView) convertView.findViewById(R.id.gridView1);
    txtTitle.setText(values[position]);
    // Change icon based on name
    //String s = values[position];

    //System.out.println(s);

    return convertView;
}
}

xml

<LinearLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center" >

<GridView
    android:id="@+id/gridView1"
    android:numColumns="auto_fit"
    android:gravity="center"
    android:columnWidth="50dp"
    android:stretchMode="columnWidth"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" />

</LinearLayout>