Android 活动到片段转换

如何将此活动转换为片段我的问题是，我想将其添加到导航抽屉中，但我不知道如何将此活动转换为片段，但如何转换？请帮忙！谢谢

package com.google.samples.apps.topeka.activity;

import android.database.Cursor;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

import com.google.samples.apps.topeka.R;
import com.google.samples.apps.topeka.helper.FavoriteHelper;


public class Paboritomain extends AppCompatActivity {

    FavoriteHelper mydb;


    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.paborito_list);
        mydb = new FavoriteHelper(this);
        mydb.getWritableDatabase();

        populateListView();


    }

    private void populateListView(){

        Cursor cursor = mydb.getAllRows();
        String[] fromFieldNames = new String[] {FavoriteHelper.COL_2};
        int[] toViewIDs = new int[]{R.id.paboritotext};
        SimpleCursorAdapter myCursorAdapter;
        myCursorAdapter = new SimpleCursorAdapter(getBaseContext(),R.layout.paborito_items,cursor,fromFieldNames,toViewIDs,0);
        ListView myList = (ListView)findViewById(R.id.list_paborito);
        myList.setAdapter(myCursorAdapter);



    }





}

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片段是这样使用的…

public class YourFragment extends Fragment {

private View rootview;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    rootview = inflater.inflate(R.layout.activity_main, container, false);

return rootview;
}
}

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