寒假作业——家庭小账本开发1

1、连接Android自带的数据库

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

public class DBHelper extends SQLiteOpenHelper {
    // 数据库默认名字
    public static final String db_name= "familyBill2.db";

    //用于创建bill表——记录收入
    public static final String CREATE_IN = "create table bill ("
            + "id integer primary key autoincrement, "
            +"date text,"
            + "type text, "
            + "money text)";


    public DBHelper(Context context, int version) {
        super(context, db_name, null, version);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_IN);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    }


}

2、设计目录页面