第三周总结

本周学习了sqllite的用法

package net.hnjdzy.tinyaccount.db;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import net.hnjdzy.tinyaccount.R;

import java.text.SimpleDateFormat;
import java.util.Date;

public class DatabaseHelper extends SQLiteOpenHelper {

   private static final String DATABASE_NAME = "account.db";
   private static final int DATABASE_VERSION = 1;

   public DatabaseHelper(Context context) {
      //建库
      super(context, DATABASE_NAME, null, DATABASE_VERSION);
   }

   @Override
   public void onCreate(SQLiteDatabase db) {
      // 建表
      //收入类别
      String sql = "CREATE TABLE accountincometype(id integer primary key autoincrement,category text,icon integer)";
      db.execSQL(sql);
      //收入明细表(id,类别，金额，备注，日期时间)
      sql = "CREATE TABLE accountincome(id integer primary key autoincrement,category text,"+
            "money double,remark text,date text)";
      db.execSQL(sql);

      //支出类别
      sql = "CREATE TABLE accountoutlaytype(id integer primary key autoincrement,category text,icon integer)";
      db.execSQL(sql);
      //支出明细表(id,类别，金额，备注，日期时间)
      sql = "CREATE TABLE accountoutlay(id integer primary key autoincrement,category text,"+
            "money double,remark text,date text)";
      db.execSQL(sql);

      initData(db);
   }
   //自动增长的列表，不需要给值；某个字段不想给值，不出现在表名后的列表中
   private void initData(SQLiteDatabase db) {
      //收入类别
      String sql = String.format("insert into accountincometype(category,icon) values('工资',%d)", R.drawable.fund_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountincometype(category,icon) values('奖金',%d)", R.drawable.insurance_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountincometype(category,icon) values('兼职收入',%d)", R.drawable.baby_icon);
      db.execSQL(sql);

      //支出类别
      sql = String.format("insert into accountoutlaytype(category,icon) values('交通',%d)", R.drawable.traffic_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountoutlaytype(category,icon) values('食物',%d)", R.drawable.breakfast_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountoutlaytype(category,icon) values('图书',%d)", R.drawable.book_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountoutlaytype(category,icon) values('电影',%d)", R.drawable.film_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountoutlaytype(category,icon) values('房租',%d)", R.drawable.housing_loan_icon);
      db.execSQL(sql);
      sql = String.format("insert into accountoutlaytype(category,icon) values('运动',%d)", R.drawable.sport_icon);
      db.execSQL(sql);

      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
      String currentDate = sdf.format(new Date());
      //收入明细
      sql = "insert into accountincome(category,money,date) values('工资',10000,'"+currentDate+"')";
      db.execSQL(sql);
      sql = "insert into accountincome(category,money,date) values('奖金',1000,'"+currentDate+"')";
      db.execSQL(sql);

      //支出明细
      sql = "insert into accountoutlay(category,money,date) values('交通',100,'"+currentDate+"')";
      db.execSQL(sql);
      sql = "insert into accountoutlay(category,money,date) values('食物',200,'"+currentDate+"')";
      db.execSQL(sql);
      sql = "insert into accountoutlay(category,money,date) values('图书',150,'"+currentDate+"')";
      db.execSQL(sql);
      sql = "insert into accountoutlay(category,money,date) values('电影',100,'"+currentDate+"')";
      db.execSQL(sql);

   }

   @Override
   public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {
      // TODO Auto-generated method stub

   }

}