week1數據與圖片請求

main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" tools:context="com.example.week_10month.MainActivity">

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:text="Hello world" />

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/tv"></ListView>
</RelativeLayout>

item

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

    <ImageView
        android:id="@+id/img"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:src="@mipmap/ic_launcher"/>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:id="@+id/tvtitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="124"/>
        <TextView
            android:id="@+id/tvdate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="124"/>
    </LinearLayout>

</LinearLayout>

bean類

public class Result {
    private List<News> newslist;

public class News {
    private String title;
    private String ctime;
    private String picUrl;

package com.example.week_10month;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.google.gson.Gson;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;

import static android.R.id.list;
import static android.net.wifi.WifiConfiguration.Status.strings;

public class MainActivity extends AppCompatActivity {

    private MyAdapter adapter;
    private TextView tv;
    private ListView lv;
    private List<String> data = new ArrayList<String>();
    private int index = 0;
    private List<News> newsData = new ArrayList<>();

    private android.os.Handler myhandler = new android.os.Handler() {
        @Override
        public void handleMessage(Message msg) {
            tv.setText(data.get(index % data.size()));
            index++;
            sendEmptyMessageDelayed(1, 3000);
        }
    };

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

        tv = (TextView) findViewById(R.id.tv);
        lv = (ListView) findViewById(R.id.lv);

        adapter = new MyAdapter();
        lv.setAdapter(adapter);
        LuJin();
        new Thread() {
            @Override
            public void run() {
                try {
                    URL url = new URL("http://www.toutiao.com/hot_words/");
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod("GET");
                    connection.setReadTimeout(5000);
                    connection.setConnectTimeout(5000);

                    if (connection.getResponseCode() == 200) {
                        InputStream stream = connection.getInputStream();
                        String str = streamToString(stream);
                        getJsonData(str);
                        myhandler.sendEmptyMessage(1);
                    }
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }.start();
    }

    private void LuJin() {
        AsyncString asyncString = new AsyncString();
        asyncString.execute("https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10&page=1");
    }

    class MyAdapter extends BaseAdapter {

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

        @Override
        public Object getItem(int position) {
            return newsData.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            convertView = View.inflate(MainActivity.this, R.layout.item, null);
            TextView tv1 = (TextView) convertView.findViewById(R.id.tvtitle);
            TextView tv2 = (TextView) convertView.findViewById(R.id.tvdate);
            ImageView iv = (ImageView) convertView.findViewById(R.id.img);
            tv1.setText(newsData.get(position).getTitle());
            tv2.setText(newsData.get(position).getCtime());
            Log.e("TAG", "getView: imgs" + newsData.get(position).getPicUrl());
            new AsyncImg(iv).execute(newsData.get(position).getPicUrl());
            return convertView;
        }
    }
        public void getJsonData(String str) {
            try {
                JSONArray array = new JSONArray(str);
                for (int i = 0; i < array.length(); i++) {
                    String dat = array.optString(i);
                    data.add(dat);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }

        public String streamToString(InputStream inputStream) {
            StringBuilder builder = new StringBuilder();
            try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "utf-8"));
                String con;
                while ((con = reader.readLine()) != null) {
                    builder.append(con);
                }
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return builder.toString();
        }

        class AsyncImg extends AsyncTask<String, Void, Bitmap> {
            private ImageView imageView;
            public AsyncImg(ImageView imageView) {
                this.imageView = imageView;
            }
            @Override
            protected Bitmap doInBackground(String... params) {
                try {
                    URL url = new URL(params[0]);
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    int code = connection.getResponseCode();
                    if (code == 200) {
                        InputStream inputStream = connection.getInputStream();
                        Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
                        return bitmap;
                    } else {
                        Log.e("LX", "doInBackground: code" + code);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return null;
            }

            @Override
            protected void onPostExecute(Bitmap bitmap) {
                super.onPostExecute(bitmap);
                imageView.setImageBitmap(bitmap);
            }
        }
//    class  MyTask extends AsyncTask<String,Void,String> {
//        @Override
//        protected String doInBackground(String... params) {
//            HttpClient httpClient=new DefaultHttpClient();
//            HttpGet httpGet = new HttpGet(params[0]);
//            try {
//                HttpResponse response = httpClient.execute(httpGet);
//                if(response.getStatusLine().getStatusCode()==200){
//                    HttpEntity entity = response.getEntity();
//                    return EntityUtils.toString(entity);
//
//                }
//            } catch (IOException e) {
//                e.printStackTrace();
//            }
//            return null;
//        }
//   }

        class AsyncString extends AsyncTask<String, Void, String> {

            @Override
            protected String doInBackground(String... strings) {
                try {
                    URL url = new URL(strings[0]);
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    int code = connection.getResponseCode();
                    if (code == 200) {
                        InputStream inputStream = connection.getInputStream();
                        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                        String string = "";
                        StringBuffer buffer = new StringBuffer();
                        while ((string = bufferedReader.readLine()) != null) {
                            buffer.append(string);
                        }
                        return buffer.toString();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return null;
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);

                Gson gson = new Gson();
                Result result = gson.fromJson(s, Result.class);
                List<News> newlist = result.getNewslist();
                Log.e("CDm", "onPostExecute:newlist " + newlist.toString());
                newsData.addAll(newlist);
                adapter.notifyDataSetChanged();
            }
        }
}