Fragment嵌套和TabLayout切换

//在activity_main的布局

//在fragmentone中的布局
//导入依赖 compile ‘com.youth.banner:banner:1.4.10’

//在子布局中

//fragmentone中的另一个子布局

//Fragmentone中的代码 package ningjiaxin1.bwie.com.week3_2.Fragment;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;

import ningjiaxin1.bwie.com.week3_2.R;

public class Fragmentone extends Fragment {
    private TabLayout tab;
    private ViewPager pager;
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragmentone, container, false);
        tab = view.findViewById(R.id.tablatout);
        pager = view.findViewById(R.id.pager);
        final ArrayList tit=new ArrayList<>();
        tit.add("正在上映");
        tit.add("即将上映");
        final ArrayList fragments=new ArrayList<>();
        fragments.add(new Fragmenta());
        fragments.add(new Fragmentb());
        pager.setAdapter(new FragmentPagerAdapter(getActivity().getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int i) {

                return fragments.get(i);
            }

            @Override
            public int getCount()
            {

                return fragments.size();
            }

            @Nullable
            @Override
            public CharSequence getPageTitle(int position) {
                return tit.get(position);
            }
        });
        tab.setupWithViewPager(pager);
        return view;
    }

//Tab中的第一个页面
package com.example.zk3_demo03.fragment;

import android.content.ContentValues;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.Toast;

import com.example.zk3_demo03.R;
import com.example.zk3_demo03.adapter.MyAdapter;
import com.example.zk3_demo03.bean.Bean;
import com.example.zk3_demo03.gg.Wangluo;
import com.example.zk3_demo03.netutil.NetUtil;
import com.example.zk3_demo03.sql.Dao;
import com.google.gson.Gson;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

import java.util.ArrayList;
import java.util.List;

public class Fragment_a extends Fragment {
i

nt page;
    String urlString = "http://api.expoon.com/AppNews/getNewsList/type/1/p/";
    ArrayList lists = new ArrayList();
    private MyAdapter myAdapter;
    private PullToRefreshListView pull;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_a, container, false);

        pull = view.findViewById(R.id.pull);

        //设置支持
        pull.setMode(PullToRefreshListView.Mode.BOTH);

        init(page);


        //创建适配器
        myAdapter = new MyAdapter(getActivity(), lists);
        //设置适配器
        pull.setAdapter(myAdapter);

        //监听时间
        pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase pullToRefreshBase) {
                lists.clear();
                init(0);
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase pullToRefreshBase) {
                init(page++);
            }
        });

        return view;
    }

    private void init(int page) {

        //有网状态
        if(Wangluo.isGG(getActivity()))
        {
            new My().execute(urlString + page);
        }
        else
        {
            //无网络状态
            Toast.makeText(getActivity(), "滚", Toast.LENGTH_SHORT).show();
            //查询数据库
            Dao dao = new Dao(getActivity());
            Cursor query = dao.query("person", null, null, null, null, null, null);
            //创建集合
            ArrayList beans = new ArrayList<>();
            //判断查询第一条是否有数据
            if(query.moveToFirst())
            {
                do {
                    String news_title = query.getString(query.getColumnIndex("news_title"));
                    //创建对象
                    Bean.DataBean dataBean = new Bean.DataBean(news_title);
                    //将对象存入集合中
                    beans.add(dataBean);
                }while (query.moveToNext());
            }
            lists.addAll(beans);
        }

    }

    class My extends AsyncTask
    {

        private long insert;

        @Override
        protected String doInBackground(String... strings) {
            String string = NetUtil.getJson(strings[0]);
            return string;
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            //开始解析
            Gson gson = new Gson();
            Bean bean = gson.fromJson(s, Bean.class);
            List data = bean.getData();
            //集合包集合
            lists.addAll(data);

            //刷新适配器
            myAdapter.notifyDataSetChanged();

            pull.onRefreshComplete();



            //导入数据库
            /**
             * news_id : 13811
             * news_title : 深港澳台千里连线，嘉年华会今夏入川
             * news_summary : 6月17—20日，“2016成都深港澳台嘉年华会”(简称嘉年华会)将在成都世纪城国际会展中心举办。其主办方励展华博借力旗
             * pic_url : http://f.expoon.com/sub/news/2016/01/21/887844_230x162_0.jpg
             */
            Dao dao = new Dao(getActivity());
            for (int i = 0; i < lists.size(); i++) {
                Bean.DataBean bean1 = lists.get(i);
                ContentValues values = new ContentValues();
                values.put("news_id",bean1.getNews_id());
                values.put("news_title",bean1.getNews_title());
                values.put("news_summary",bean1.getNews_summary());
                values.put("pic_url",bean1.getPic_url());
                insert = dao.insert("person", null, values);
            }
            Toast.makeText(getActivity(), "添加数据库条数为:"+insert, Toast.LENGTH_SHORT).show();
        }
    }
}

//Tab中的第二个页面

}

//添加权限