TabLayout和Viewpager

===============================mainactivity==============================================================================

package news1510a.bawei.com.a12_tablayout_viewpager;

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.support.v7.app.AppCompatActivity;
import android.os.Bundle;

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

/**
 * 二.tablayout结合viewPager使用
 *
 * 参考博客:http://www.jb51.net/article/120336.htm
 *
 *
 */
public class MainActivity extends AppCompatActivity {

    private TabLayout tabLayout;
    private ViewPager viewPager;
    private List<String> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tabLayout = (TabLayout) findViewById(R.id.tab);
        viewPager = (ViewPager) findViewById(R.id.view_pager);

        list = new ArrayList<>();

        list.add("头条");
        list.add("军事");
        list.add("娱乐");
        list.add("新闻");
        list.add("财经");
        list.add("体育");
        list.add("科技");
        list.add("游戏");
        list.add("汽车");
        list.add("环保");
        list.add("视频");
        list.add("国内");

        //1.给viewPager设置适配器
        /**
         * 管理者对象有几种????
         * getSupportFragmentManager()...activity管理他身上的fragment的时候使用
         * getChildFragmentManager()...fragment嵌套的时候,,,管理孩子需要使用这个管理者
         * getFragmentManager()....孩子里面还有fragment的话就使用这个
         */
        viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {

            //2.重写这个方法getPageTitle,,,得到当前页面的标题
            @Override
            public CharSequence getPageTitle(int position) {

                return list.get(position);
            }

            @Override
            public Fragment getItem(int position) {

                NewsFragment newsFragment = new NewsFragment();

                //应该要做的是传值,,,,去fragment里面获取,,,获取到值之后,,,在进行url路径的拼接

                Bundle bundle = new Bundle();

                bundle.putString("name","头条");
                newsFragment.setArguments(bundle);

                return newsFragment;
            }

            @Override
            public int getCount() {
                return list.size();
            }
        });

        //3.将tabLayout和viewPager关联起来
        tabLayout.setupWithViewPager(viewPager);

    }
}
=======================================MyAdapter=========================================================================

package news1510a.bawei.com.a12_tablayout_viewpager;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.List;

/**
 * @author Dash
 * @date 2017/10/12
 * @description:
 */
public class MyAdapter extends BaseAdapter {
    Context context;
    List<DataDataBean.ResultBean.DataBean> data;

    public MyAdapter(Context context, List<DataDataBean.ResultBean.DataBean> data) {
        this.context = context;
        this.data = data;
    }

    @Override
    public int getCount() {
        return data.size();
    }

    @Override
    public Object getItem(int i) {
        return data.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {

        //只是复用的优化
        if (view == null){
            view = View.inflate(context,android.R.layout.simple_list_item_1,null);
        }

        TextView textView = view.findViewById(android.R.id.text1);

        textView.setText(data.get(i).getTitle());


        return view;
    }
}

=============================newsFragment============================================================================

package news1510a.bawei.com.a12_tablayout_viewpager;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

import com.google.gson.Gson;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * @author Dash
 * @date 2017/10/12
 * @description:
 */
public class NewsFragment extends Fragment {

    private ListView listView;

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

        listView = view.findViewById(R.id.list_view);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        //获取数据
        String name =  getArguments().getString("name", "");

        //判断
        if (name.equals("头条")){
            name = "top";
        }else if (name.equals("军事")){
            name = "junshi";
        }else if (name.equals("社会")){
            name = "shehui";
        }else if (name.equals("财经")){
            name = "caijing";
        }else if (name.equals("国内")){
            name = "guonei";
        }

        getDataFromNet(name);


    }

    private void getDataFromNet(final String name) {
        AsyncTask<Void, Void, String> asyncTask = new AsyncTask<Void, Void, String>() {
            @Override
            protected String doInBackground(Void... voids) {
                try {
                    URL url = new URL("http://v.juhe.cn/toutiao/index?type="+name+"&key=c4479ad58f41e7f78a8fa073d0b1f1b5");

                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();

                    connection.setRequestMethod("GET");
                    connection.setReadTimeout(5000);
                    connection.setConnectTimeout(5000);

                    //获取
                    int responseCode = connection.getResponseCode();
                    if (responseCode == 200){
                        InputStream inputStream = connection.getInputStream();

                        String json = streamToString(inputStream,"utf-8");

                        //打印字符串
                        Log.i("---",json);

                        return json;
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }


                return null;
            }

            @Override
            protected void onPostExecute(String s) {

                Gson gson = new Gson();
                DataDataBean dataDataBean = gson.fromJson(s, DataDataBean.class);

                MyAdapter myAdapter = new MyAdapter(getActivity(), dataDataBean.getResult().getData());

                listView.setAdapter(myAdapter);
            }
        };

        asyncTask.execute();
    }

    private String streamToString(InputStream inputStream,String charset) {
        try {
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream,charset);

            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String s = null;
            StringBuilder builder = new StringBuilder();
            while ((s = bufferedReader.readLine()) != null){
                builder.append(s);
            }

            bufferedReader.close();
            return builder.toString();

        } catch (Exception e) {
            e.printStackTrace();
        }

        return  null;
    }
}

===================================activity_main===========================================================================

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.TabLayout
        android:id="@+id/tab"
        app:tabGravity="center"
        app:tabIndicatorColor="@color/colorAccent"
        app:tabMode="scrollable"
        app:tabSelectedTextColor="@color/colorPrimaryDark"
        app:tabTextColor="@color/colorPrimary"
        android:layout_width="match_parent"
        android:layout_height="40dp" />

    <android.support.v4.view.ViewPager
        android:layout_below="@+id/tab"
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v4.view.ViewPager>
</RelativeLayout>
=============================fragmentLayout==================================================================================

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:id="@+id/list_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </ListView>

</LinearLayout>