冲刺第三天

完成了百度地图API的寻找申请了密钥，活力值榜和人数限制功能还在完善



`package com.example.yibaifen;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.ListView;
import android.widget.ArrayAdapter;

import androidx.appcompat.app.AppCompatActivity;

import com.example.yibaifen.Bean.Student;
import com.example.yibaifen.Dao.Mysqldb;

import java.util.ArrayList;

public class DisplayHuolizhiActivity extends AppCompatActivity {
private ListView listView;
private ArrayAdapter adapter;
private ArrayList huolizhiList;

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

    listView = findViewById(R.id.list_view);
    huolizhiList = new ArrayList<>();
    adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, huolizhiList);
    listView.setAdapter(adapter);

    // 调用异步任务获取数据
    new FetchHuolizhiTask().execute();
}

private class FetchHuolizhiTask extends AsyncTask<Void, Void, ArrayList<Student>> {
    @Override
    protected ArrayList<Student> doInBackground(Void... voids) {
        Mysqldb mysqldb = new Mysqldb();
        ArrayList<Student> students = mysqldb.getAllStudents();
        Log.d("DisplayHuolizhiActivity", "Number of students: " + students.size());
        return students;
    }

    @Override
    protected void onPostExecute(ArrayList<Student> students) {
        if (students != null && !students.isEmpty()) {
            for (Student student : students) {
                huolizhiList.add("ID: " + student.getId() + ", 活力值: " + student.getHuolizhi());
            }
            Log.d("DisplayHuolizhiActivity", "Huolizhi list: " + huolizhiList.toString());
            adapter.notifyDataSetChanged(); // 更新适配器的数据
        } else {
            Log.d("DisplayHuolizhiActivity", "No students found or empty list.");
        }
    }
}

}

`