IOS Sqlite用戶界面增刪改查案例

1.案例簡介

對SQLite操作進行了簡單的封裝，將對數據表操作轉變成對對象的操作，並通過UI界面完成對用戶表的增、刪、改、查，運行界面如下圖所示

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2.項目工程目錄

UserModel類爲用戶對象模型，與數據庫表中字段一一對應

BaseDB類爲對sqlite簡單封裝，抽象出對數據庫操作的三個方法，具體內容看http://blog.csdn.net/whzhaochao/article/details/38865535博文

UserDB繼承於BaseDB，主要是完成UserModel對象的增、刪、改、查，其內容如下

UserDB.h

//
//  UserDB.h
//  SqliteDemo
//
//  Created by 趙超 on 14-8-27.
//  Copyright (c) 2014年 趙超. All rights reserved.
//

#import "BaseDB.h"
#import "UserModel.h"

@interface UserDB : BaseDB{

}
//單例
+(id)shareUserDB;
//創建User表
-(void)creatTableWithDataBaseName:(NSString*) dbName;
//增加一個UserModel
-(BOOL)addUser:(UserModel*)userModel dbName:(NSString*)dbName;
//修改一個UserModel
-(BOOL)updateUser:(UserModel*)userModel dbName:(NSString*)dbName;
//查詢所有
-(NSArray*)findAllUser:(NSString*)dbName;
//刪除一個對象
-(BOOL) deleteUser:(UserModel*)userModel dbName:(NSString*)dbName;

@end

UserDB.m

//
//  UserDB.m
//  SqliteDemo
//
//  Created by 趙超 on 14-8-27.
//  Copyright (c) 2014年 趙超. All rights reserved.
//

#import "UserDB.h"

@implementation UserDB

static UserDB * db;

+(id) shareUserDB{
    if (db==nil) {
        db= [[UserDB alloc] init];
    }
    return  db;
}

-(void)creatTableWithDataBaseName:(NSString*) dbName{
    NSString *sql=@"create table user( userName text primary key,passWord text, userEmail text)";
    [self createTable:sql dataBaseName:dbName];

}

-(BOOL) deleteUser:(UserModel*)userModel dbName:(NSString*)dbName{
        NSString *sql=@"delete from user where userName =?";
        NSArray *params=@[ userModel.userName];
     return  [self execSql:sql parmas:params dataBaseName:dbName];
}


-(BOOL)addUser:(UserModel *)userModel dbName:(NSString *)dbName{
    NSString *sql=@"insert into user (userName,passWord,userEmail) values (?,?,?)";
    NSArray *params=@[userModel.userName,userModel.passWord,userModel.userEmail];
    return  [self execSql:sql parmas:params dataBaseName:dbName];
}
-(NSArray*) findAllUser:(NSString *)dbName{
    NSString *sql=@"select userName,passWord,userEmail from user";
    NSArray *result= [self selectSql:sql parmas:nil dataBaseName:dbName];
    NSMutableArray *users=[NSMutableArray array];
    for (NSDictionary *dic in result) {
        UserModel *user=[[UserModel alloc] init];
        user.userName=[dic objectForKey:@"userName"];
        user.passWord=[dic objectForKey:@"passWord"];
        user.userEmail=[dic objectForKey:@"userEmail"];
        [users addObject:user];
    }

    return users;

}

-(BOOL)updateUser:(UserModel *)userModel dbName:(NSString *)dbName{
    NSString *sql=@"update user set userName=?,passWord=?,userEmail=? where userName=?";
    NSArray *params=@[userModel.userName,userModel.passWord,userModel.userEmail,userModel.userName];

    return [self execSql:sql parmas:params dataBaseName:dbName];

}


@end

MainViewController是用戶顯示所有用戶列表

AddViewController用於增加和修改用戶界面的顯示

完整項目代碼下載http://download.csdn.net/detail/whzhaochao/7829829

轉載:http://blog.csdn.net/whzhaochao/article/details/38875739