第一阶段冲刺2

 做了一个标签栏：

package com.example.zbytexttwo;

 

import android.content.Context;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteDatabase.CursorFactory;

import android.database.sqlite.SQLiteOpenHelper;

public class dbHelper extends SQLiteOpenHelper {

    public static final String TB_NAME = "bills";

    public dbHelper(Context context, String name, CursorFactory factory, int version) {

        super(context, name, factory, version);

        // TODO Auto-generated constructor stub    }

    @Override

    public void onCreate(SQLiteDatabase db) {

        // TODO Auto-generated method stub

        db.execSQL("CREATE TABLE IF NOT EXISTS " +

                TB_NAME + " ( _id integer primary key autoincrement," +

                "leixing varchar," +

                "riqi varchar,"+

                "jine integer," +

                "beizhu varchar"+

                ") ");

    }

    @Override

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

        // TODO Auto-generated method stub

        db.execSQL("DROP TABLE IF EXISTS " + TB_NAME);

        onCreate(db);

    }

}