Asycntast异步

package com.example.word_day0608;

import android.os.Bundle;
import android.support.annotation.NonNull;
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.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;

public class FragmentOne extends Fragment {

    private String path="https://www.zhaoapi.cn/quarter/getJokes?source=android&appVersion=101";

    private ListView listview;
    private List<ConnectionBean.DataBean> data;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View view= inflater.inflate(R.layout.fragmentone,container,false);

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

        new Thread(){
            @Override
            public void run() {
                super.run();
                try {
                    URL url = new URL(path);
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod("GET");

                    if (connection.getResponseCode() == 200) {
                        InputStream inputStream = connection.getInputStream();
                       String  s = StreamToString(inputStream);
                        Log.i("TAG",s);

                        Gson gson = new Gson();
                        ConnectionBean bean = gson.fromJson(s, ConnectionBean.class);
                        data = bean.getData();
                        Log.i("TAG", data.size()+"");
                        //在线程中更改主线程的UI
                        getActivity().runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                ///创建适配器
                                MyBase myBase = new MyBase(getActivity(), data);
                                listview.setAdapter(myBase);
                            }
                        });


                    }


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

            }
        }.start();


        return view;
    }

    private String StreamToString(InputStream inputStream) {

        InputStreamReader streamReader = new InputStreamReader(inputStream);
        BufferedReader reader = new BufferedReader(streamReader);
        String b= null;
        StringBuilder builder = new StringBuilder();
        try {
            while ((b=reader.readLine())!=null){
                builder.append(b);
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }


        return builder.toString();
    }
}