记账本开发6

今天完成账单的显示。（代码参考自CSDN、百度等）

package com.example.myapp0;

import androidx.appcompat.app.AppCompatActivity;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.Toast;

import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import java.util.ArrayList;
import java.util.List;

public class ZD extends AppCompatActivity 
{
    private List<Account> accountList=new ArrayList<Account>();
    private ListView listView;

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

        initAccount();
        AccountAdapter adapter=new AccountAdapter(ZD.this,R.layout.item,accountList);
        listView=findViewById(R.id.zd);
        listView.setAdapter(adapter);

    }
    private void initAccount()
　　{
        MyDatabaseHelper databaseHelper=new MyDatabaseHelper(this);
        SQLiteDatabase db=databaseHelper.getWritableDatabase();
        Cursor cursor=db.query("AcountBook",null,null,null,null,null);
        while(cursor.moveToNext())
　　　　 {
            String je=cursor.getString(cursor.getColumnIndex("je"));
            String name=cursor.getString(cursor.getColumnIndex("name"));
            String bz=cursor.getString(cursor.getColumnIndex("bz"));
            String time=cursor.getString(cursor.getColumnIndex("time"));
            Account account=new Account(je,name,bz,time);
            accountList.add(account);
        }
    }
}

 

package com.example.myapp0;

import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.content.Context;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.List;

public class AccountAdapter extends ArrayAdapter 
{
    private final int resourceId;
    public AccountAdapter(Context context,int textViewResourceId,List<Account> objects){
        super(context,textViewResourceId,objects);
        resourceId=textViewResourceId;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent)
　　{
        Account account = (Account) getItem(position);
        View view = LayoutInflater.from(getContext()).inflate(resourceId, null);
        TextView je,name,bz,time;
        je=view.findViewById(R.id.je);
        name=view.findViewById(R.id.name);
        bz=view.findViewById(R.id.bz);
        time=view.findViewById(R.id.time);
        je.setText(account.getJe());
        name.setText(account.getName());
        bz.setText(account.getBz());
        time.setText(account.getTime());
        return view;
    }
}