MyFrist

来源：互联网发布：知乎下水道疏通除尿碱编辑：程序博客网时间：2024/05/22 17:25

//主Activity
import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ListView;import com.google.gson.Gson;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.conn.ssl.AllowAllHostnameVerifier;import org.apache.http.conn.ssl.SSLSocketFactory;import org.apache.http.impl.client.DefaultHttpClient;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import java.util.List;import adapter.MyAdapter;import bean.UserBean;public class MainActivity extends Activity {    private ListView listView;    private Button button_httprelconnection;    private Button button_httpclient;    Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            if (msg.what == 0){                UserBean userBean= (UserBean) msg.obj;                List<UserBean.NewslistBean> newslist = userBean.getNewslist();                MyAdapter myAdapter = new MyAdapter(MainActivity.this, newslist);                listView.setAdapter(myAdapter);            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        listView = (ListView) findViewById(R.id.list_view);        button_httpclient = (Button) findViewById(R.id.button_httpclient);        button_httprelconnection = (Button) findViewById(R.id.button_httprelconnection);        button_httpclient.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                listView.setAdapter(null);                MyTask myTask = new MyTask();                myTask.execute("https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10");                Log.i("button_httpclient监听" , "button_httpclient监听------>" + "成功");            }        });        button_httprelconnection.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                new Thread(){                    @Override                    public void run() {                        Log.i("button_httprelconnection监听" , "button_httprelconnection监听------>" + "成功");//                        listView.setAdapter(null);                        String path = "https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10";                        try {                            URL url = new URL(path);                            HttpURLConnection connection = (HttpURLConnection) url.openConnection();                            connection.setRequestMethod("GET");                            connection.setReadTimeout(5000);                            connection.setConnectTimeout(5000);                            int responseCode = connection.getResponseCode();                            Log.i("button_httprelconnection监听" , "button_httprelconnection监听------>" + "成功" +responseCode);                            if (responseCode == 200){                                InputStream inputStream = connection.getInputStream();                                String json = StreanToString(inputStream, "utf-8");                                Gson gson = new Gson();                                UserBean userBean = gson.fromJson(json, UserBean.class);                                Log.i("信息",userBean.toString());                                Message msg =Message.obtain();                                msg.obj=userBean;                                msg.what=0;                                handler.sendMessage(msg);                            }                        } catch (Exception e) {                            e.printStackTrace();                        }                    }                }.start();            }        });    }    private String StreanToString(InputStream inputStream, String s) {        try {            InputStreamReader inputStreamReader = new InputStreamReader(inputStream);            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);            StringBuilder builder = new StringBuilder();            String string = null;            while ((string = bufferedReader.readLine()) != null){                builder.append(string);            }            bufferedReader.close();            Log.i("builder02" , "builder02------>" + builder.toString());            return builder.toString();        } catch (IOException e) {            e.printStackTrace();        }        return null;    }    class MyTask extends AsyncTask<String , Integer , String> {        @Override        protected String doInBackground(String... strings) {            try {                Log.i("builder" , "builder------>");                SSLSocketFactory.getSocketFactory().setHostnameVerifier(new AllowAllHostnameVerifier());                DefaultHttpClient defaultHttpClient = new DefaultHttpClient();                HttpGet httpGet = new HttpGet(strings[0]);                HttpResponse execute = defaultHttpClient.execute(httpGet);                int statusCode = execute.getStatusLine().getStatusCode();                Log.i("builder" , "builder------>" + statusCode);                if (statusCode == 200){                    HttpEntity entity = execute.getEntity();                    InputStream inputStream = entity.getContent();                    InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");                    BufferedReader bufferedReader = new BufferedReader(inputStreamReader);                    String s = null;                    StringBuilder builder = new StringBuilder();                    while ((s=bufferedReader.readLine()) != null){                        builder.append(s);                    }                    bufferedReader.close();                    Log.i("builder" , "builder------>"+builder.toString());                    return builder.toString();                }            } catch (Exception e) {                e.printStackTrace();            }            return null;        }        @Override        protected void onPostExecute(String s) {            super.onPostExecute(s);            Gson gson = new Gson();            UserBean userBean = gson.fromJson(s, UserBean.class);            List<UserBean.NewslistBean> list = userBean.getNewslist();            MyAdapter adapter = new MyAdapter(MainActivity.this, list);            listView.setAdapter(adapter);        }    }}
//Bean类

package bean;import java.util.List;/** * Created by Lonely on 2017/9/4. */public class UserBean {        private int code;    private String msg;    private List<NewslistBean> newslist;    public int getCode() {        return code;    }    public void setCode(int code) {        this.code = code;    }    public String getMsg() {        return msg;    }    public void setMsg(String msg) {        this.msg = msg;    }    public List<NewslistBean> getNewslist() {        return newslist;    }    public void setNewslist(List<NewslistBean> newslist) {        this.newslist = newslist;    }    public static class NewslistBean {               private String ctime;        private String title;        private String description;        private String picUrl;        private String url;        public String getCtime() {            return ctime;        }        public void setCtime(String ctime) {            this.ctime = ctime;        }        public String getTitle() {            return title;        }        public void setTitle(String title) {            this.title = title;        }        public String getDescription() {            return description;        }        public void setDescription(String description) {            this.description = description;        }        public String getPicUrl() {            return picUrl;        }        public void setPicUrl(String picUrl) {            this.picUrl = picUrl;        }        public String getUrl() {            return url;        }        public void setUrl(String url) {            this.url = url;        }    }}

//adapter

package adapter;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.example.lonely.zhoukao01.MainActivity;import com.example.lonely.zhoukao01.R;import java.util.List;import bean.UserBean;import util.ImageUtil;/** * Created by Lonely on 2017/9/4. */public class MyAdapter extends BaseAdapter {    Context context;    List<UserBean.NewslistBean> list;    public MyAdapter(Context context, List<UserBean.NewslistBean> list) {        this.context = context;        this.list = list;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int i) {        return list.get(i);    }    @Override    public long getItemId(int i) {        return i;    }    @Override    public View getView(int i, View view, ViewGroup viewGroup) {        ViewHolder holder;        if (view == null){            holder = new ViewHolder();            view = View.inflate(context , R.layout.list_view_demo , null);            holder.image_picUrl = view.findViewById(R.id.image_picUrl);            holder.text_title = view.findViewById(R.id.text_title);            holder.text_ctime = view.findViewById(R.id.text_ctime);            view.setTag(holder);        }else{            holder = (ViewHolder) view.getTag();        }        new ImageUtil().ImageNei(list.get(i).getPicUrl() , holder.image_picUrl);        holder.text_title.setText(list.get(i).getTitle());        holder.text_ctime.setText(list.get(i).getCtime());        return view;    }    class ViewHolder{        ImageView image_picUrl;        TextView text_title;        TextView text_ctime;    }}
//util

package util;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.AsyncTask;import android.widget.ImageView;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection;/** * Created by Lonely on 2017/9/4. */public class ImageUtil {    public void ImageNei(final String picUrl, final ImageView image_picUrl) {        AsyncTask<Void, Void, Bitmap> asyncTask = new AsyncTask<Void, Void, Bitmap>() {            @Override            protected Bitmap doInBackground(Void... voids) {                try {                    URL url = new URL(picUrl);                    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();                    urlConnection.setRequestMethod("GET");                    urlConnection.setConnectTimeout(5000);                    urlConnection.setReadTimeout(5000);                    int responseCode = urlConnection.getResponseCode();                    if (responseCode == 200){                        InputStream inputStream = urlConnection.getInputStream();                        Bitmap bitmap = BitmapFactory.decodeStream(inputStream);                        return bitmap;                    }                } catch (Exception e) {                    e.printStackTrace();                }                return null;            }            @Override            protected void onPostExecute(Bitmap bitmap) {                super.onPostExecute(bitmap);                image_picUrl.setImageBitmap(bitmap);            }        };        asyncTask.execute();    }}

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