DBOpenHelper.java

package com.pwp.dao;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

public class DBOpenHelper extends SQLiteOpenHelper {

	private final static int VERSION = 1;

	public DBOpenHelper(Context context, String name, CursorFactory factory,
			int version) {
		super(context, name, factory, version);
		// TODO Auto-generated constructor stub
	}

	public DBOpenHelper(Context context, String name, CursorFactory factory) {
		this(context, name, null, VERSION);
	}

	public DBOpenHelper(Context context, String name) {
		this(context, name, null);
	}

	@Override
	public void onCreate(SQLiteDatabase db) {
		Log.i("andli", "新建数据库");

		db.execSQL("CREATE TABLE IF NOT EXISTS schedule(scheduleID integer primary key autoincrement,scheduleTypeID integer,remindID integer,scheduleContent text,scheduleDate text)");
		db.execSQL("CREATE TABLE IF NOT EXISTS scheduletagdate(tagID integer primary key autoincrement,year integer,month integer,day integer,scheduleID integer)");

	}

	@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		Log.i("andli", "清空数据库");
		db.execSQL("DROP TABLE IF EXISTS schedule");
		db.execSQL("DROP TABLE IF EXISTS scheduletagdate");
		onCreate(db);
	}

}