sqlite数据库增删改查
2016-10-25 18:40
369 查看
package com.example.db;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
public class Gooddao {
private ShopHelper helper;
public Gooddao(Context context) {
helper=new ShopHelper(context);
}
//添加
public void add(Shop s){
SQLiteDatabase db=helper.getWritableDatabase();
ContentValues values=new ContentValues();
values.put("sid", s.getId());
values.put("goods_name", s.getGoods_name());
values.put("shop_price", s.getShop_price());
values.put("goods_img", s.getGoods_img());
values.put("num", s.getNum());
db.insert("goods", null, values);
db.close();
}
//修改
public void update(Shop s){
SQLiteDatabase db=helper.getWritableDatabase();
db.execSQL("update goods set price=? where name=?",new Object[]{s.getGoods_name(),s.getShop_price(),s.getGoods_img()});
db.close();
}
//查询
public ArrayList<Shop> select(){
SQLiteDatabase db=helper.getReadableDatabase();
Cursor cursor=db.query("goods", null, null, null, null, null, null);
ArrayList<Shop> data=new ArrayList<Shop>();
while(cursor.moveToNext()){
String id=cursor.getString(cursor.getColumnIndex("sid"));
String goods_name=cursor.getString(cursor.getColumnIndex("goods_name"));
double shop_price=cursor.getDouble(cursor.getColumnIndex("shop_price"));
String goods_img=cursor.getString(cursor.getColumnIndex("goods_img"));
int num=cursor.getInt(cursor.getColumnIndex("num"));
Shop s=new Shop(id, goods_name, goods_img, shop_price, num);
data.add(s);
}
db.close();
return data;
}
//删除
public void delete(List<String> id){
SQLiteDatabase db=helper.getWritableDatabase();
for (String str : id) {
db.execSQL("delete from goods where sid=?",new String[]{str});
}
db.close();
}
}
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
public class Gooddao {
private ShopHelper helper;
public Gooddao(Context context) {
helper=new ShopHelper(context);
}
//添加
public void add(Shop s){
SQLiteDatabase db=helper.getWritableDatabase();
ContentValues values=new ContentValues();
values.put("sid", s.getId());
values.put("goods_name", s.getGoods_name());
values.put("shop_price", s.getShop_price());
values.put("goods_img", s.getGoods_img());
values.put("num", s.getNum());
db.insert("goods", null, values);
db.close();
}
//修改
public void update(Shop s){
SQLiteDatabase db=helper.getWritableDatabase();
db.execSQL("update goods set price=? where name=?",new Object[]{s.getGoods_name(),s.getShop_price(),s.getGoods_img()});
db.close();
}
//查询
public ArrayList<Shop> select(){
SQLiteDatabase db=helper.getReadableDatabase();
Cursor cursor=db.query("goods", null, null, null, null, null, null);
ArrayList<Shop> data=new ArrayList<Shop>();
while(cursor.moveToNext()){
String id=cursor.getString(cursor.getColumnIndex("sid"));
String goods_name=cursor.getString(cursor.getColumnIndex("goods_name"));
double shop_price=cursor.getDouble(cursor.getColumnIndex("shop_price"));
String goods_img=cursor.getString(cursor.getColumnIndex("goods_img"));
int num=cursor.getInt(cursor.getColumnIndex("num"));
Shop s=new Shop(id, goods_name, goods_img, shop_price, num);
data.add(s);
}
db.close();
return data;
}
//删除
public void delete(List<String> id){
SQLiteDatabase db=helper.getWritableDatabase();
for (String str : id) {
db.execSQL("delete from goods where sid=?",new String[]{str});
}
db.close();
}
}
相关文章推荐
- Android学习---SQLite数据库的增删改查和事务(transaction)调用
- 数据库的增删改查 →创建sqlite数据库
- Sqlite数据库,增删改查,升级和事物
- SQLite数据库——增删改查
- 轻量级 SQLite数据库帮助类 增删改查 分页
- 【Android Sqlite】萌动的sqlite数据库,简单实现:用户增删改查
- fmdb实现sqlite数据库的增删改查功能(上)
- android开发之sqlite数据库增删改查
- SQLite数据库增删改查操作
- iOS object-c语言使用SQLite数据库增删改查
- sqlite数据库的基本增删改查操作MainActivity类代码
- Android开发(10)使用SQLiteDatabase操作SQLite数据库实现增删改查(源码)
- SQlite---SQLite数据库增删改查操作
- SQLite数据库的增删改查
- 2014-10-31Android学习------SQLite数据库操作(四)-----数据库模块(二)增删改查实例展示
- 实验九 SQLite数据库的增删改查
- sqlite数据库之增删改查
- fmdb实现sqlite数据库的增删改查功能(下)
- 通过API函数来控制SQLite数据库增删改查
- 通过Sql语句和android封装好的方法控制SQLite数据库增删改查