ADD file via upload

BS体系结构-网络动态数据浏览系统/internetdata.java

@@ -0,0 +1,102 @@
+package edu.hzuapps.shudongapp;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.loopj.android.http.AsyncHttpClient;
+import com.loopj.android.http.AsyncHttpResponseHandler;
+
+import java.util.List;
+
+import edu.hzuapps.shudongapp.bean.NewInfo;
+import edu.hzuapps.shudongapp.bean.User;
+
+public class internetdata extends AppCompatActivity {
+
+    private LinearLayout loading;
+    private ListView lvUsers;
+    private List<User> users;
+    private User user;
+    private TextView tv_story;
+    private TextView tv_name;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_internetdata);
+        initView();
+        fillData();
+    }
+    private void initView() {                                  //初始化空间
+        loading = (LinearLayout) findViewById(R.id.loading);
+        lvUsers = (ListView) findViewById(R.id.lv_users);
+    }
+    //使用AsyncHttpClient访问网路
+    private void fillData() {
+        //创建AsyncHttpClient实例
+        AsyncHttpClient client = new AsyncHttpClient();
+        //使用GET方式请求
+        client.get(getString(R.string.serverurl),new AsyncHttpResponseHandler() {
+            @Override
+            public void onSuccess(int i,org.apache.http.Header[] headers,byte[] bytes) {
+                //调用jsonparse工具类解析json文件
+                try {
+                    String json = new String(bytes,"utf-8");
+                    users = JsonParse.getUser(json);
+                    if (users == null) {
+                        Toast.makeText(internetdata.this,"解析失败",Toast.LENGTH_SHORT).show();
+                    }else{      //更新界面
+                        loading.setVisibility(View.INVISIBLE);
+                        lvUsers.setAdapter(new UsersAdapter());
+                    }
+                }catch (Exception e) {
+                    e.printStackTrace(); }
+            }
+            @Override                                                   //请求失败
+            public void onFailure(int i, org.apache.http.Header[] headers,byte[] bytes,Throwable throwable) {
+                Toast.makeText(internetdata.this,"请求失败",Toast.LENGTH_SHORT).show();
+            }
+
+        });
+    }
+    //ListView适配器
+    private class UsersAdapter extends BaseAdapter {
+        //ListView的Item数
+        @Override
+        public int getCount() {
+            return users.size();
+        }
+        //得到ListView条目视图
+        @Override
+        public View getView(int position, View converView, ViewGroup parent) {
+            View view = View.inflate(internetdata.this, R.layout.user_item, null);
+            tv_story = (TextView) view.findViewById(R.id.tv_story);
+            tv_name = (TextView) view.findViewById(R.id.tv_name);
+            user = users.get(position);
+            //设置故事描述
+            tv_story.setText(user.getStory());
+            //设置作者姓名
+            tv_name.setText("姓名:"+ user.getName());
+            return view;
+        }
+        //条目对象
+        @Override
+        public Object getItem(int position) {
+            return null;
+        }
+        //条目id
+        @Override
+        public long getItemId(int position) {
+            return 0;
+        }
+    }
+
+}