家庭记账本（七）

package com.example.jizhangben;

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

public class CostDB extends SQLiteOpenHelper {

    public static final String TABLE_NAME = "costs";
    public static final String MONEY = "money";
    public static final String DATE = "date";
    public static final String TITLE = "title";

    public CostDB(Context context) {
        super(context, "costs1", null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table if not exists "+ TABLE_NAME +"("+
                "id integer primary key, "+
                "title varchar, "+
                "date varchar, "+
                "money varchar)");
    }
    public void insertCost(costBean costBean1)
    {
        SQLiteDatabase database=getWritableDatabase();
        ContentValues cv=new ContentValues();
        cv.put(TITLE,costBean1.costTitle);
        cv.put(DATE,costBean1.costDate);
        cv.put(MONEY,costBean1.costMoney);
        database.insert("TABLE_NAME",null,cv);
    }
    public Cursor getAllCostData(){
        SQLiteDatabase database = getReadableDatabase();
        return database.query("TABLE_NAME",null,null,null,null,null,null);
    }
    public void deleteAllData(){
        SQLiteDatabase database=getWritableDatabase();
        database.delete("TABLE_NAME",null,null);
    }
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    }
}