Activity 到 Fragment 的转换

Posted 2023-04-13

【中文标题】Activity 到 Fragment 的转换

【英文标题】：Activity to fragment conversion

【发布时间】：2016-10-26 15:29:07

【问题描述】：

如何将此活动转换为片段我的问题是我想将它添加到我的导航抽屉但我不知道我需要如何将此活动转换为片段但是如何？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);



    

【问题讨论】：

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【参考方案1】：

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;