User.h文件
#import <Foundation/Foundation.h>
#import "sqlite3.h"
@interface User : NSObject
{
sqlite3 * linik;
NSString * path;
}
//添加四个数据
-(NSInteger )addNewGoods:(NSString*)addGoodname withPrice:(NSString *)addwithPrice andStorage : (NSString * )addGoodsStorage;
-(NSMutableArray *) showNewGoodsInformation;
User.m文件
#import "User.h"
@implementation User
-(id)init{
self =[super init];
//根目录
path =@"/Users/feifanchengxuyuan/Desktop/MicroMall.db";
//打开数据库
sqlite3_open([path UTF8String], &linik);
//创建表
NSString * createGoodsTable=@"create table if not exists goods(goods_id integer primary key autoincrement,goods_name varchar(40),goods_Price varchar(7),goods_storage varchar(8) )";
//执行
sqlite3_exec(linik, [createGoodsTable UTF8String], nil, nil, nil);
return self;
}
//插数据
-(NSInteger )addNewGoods:(NSString*)addGoodname withPrice:(NSString *)addwithPrice andStorage : (NSString * )addGoodsStorage{
//辅助
sqlite3_stmt * state;
NSString * goodsId;
//创建表
NSString * insertGoods=[NSString stringWithFormat:@"insert into goods(goods_name,goods_Price,goods_storage) values(\"%@\",\"%@\",\"%@\")",addGoodname,addwithPrice,addGoodsStorage];
//如果每一个表都插入成功 SQLITE_OK代表都插进了
if (sqlite3_exec(linik, [insertGoods UTF8String], nil, nil, nil)==SQLITE_OK) {
//查找新添加商品Id
NSString * selectNewGoods=[NSString stringWithFormat:@"select goods_id from goods where goods_name=\"%@\" ",addGoodname];
//预处理
sqlite3_prepare_v2(linik, [selectNewGoods UTF8String], -1, &state, nil);
// SQLITE_ROW代表每一行插进去了
while (sqlite3_step(state)==SQLITE_ROW) {
goodsId =[NSString stringWithUTF8String:( char *)sqlite3_column_text(state, 0)];
}
}
NSLog(@"jdsfhk");
return [goodsId integerValue];
}
//从数据库中提取字段
-(NSMutableArray *)showNewGoodsInformation{
//辅助的
sqlite3_stmt *state;
//接收从数据库中拿出来的值
NSString * goodsId;
NSString * goodsName;
NSString * goodsPrice;
NSString * goodsStorge;
//将值用可变数组接收
NSMutableArray * muarray=[[NSMutableArray alloc]initWithCapacity:10];
NSDictionary * dic;
//查看商品表
NSString * selectGoods=[[NSString alloc]initWithFormat:@"select * from goods order by goods_id desc;"];//order by goods_id desc 降序
//预编译
sqlite3_prepare_v2(linik, [selectGoods UTF8String], -1, &state, nil);
//取出下一行0，1，2，3列字段所有的值
while (sqlite3_step(state) == SQLITE_ROW) {
//取出地一列的所有值
goodsId =[[NSString alloc]initWithCString:(char *)sqlite3_column_text(state, 0) encoding:NSUTF8StringEncoding];
//取出第二列的所有值
goodsName = [[NSString alloc]initWithCString:(char *)sqlite3_column_text(state, 1) encoding:NSUTF8StringEncoding];
//取出第三列的所有值
goodsPrice =[[NSString alloc]initWithCString:(char *)sqlite3_column_text(state, 2) encoding:NSUTF8StringEncoding];
//取出第四列的所有值
goodsStorge =[[NSString alloc]initWithCString:(char *)sqlite3_column_text(state, 3) encoding:NSUTF8StringEncoding];
//先用字典包装
dic=@{ @"goodsId":goodsId,
@"goodsName":goodsName,
@"goodsPrice":goodsPrice,
@"goodsStorge":goodsStorge,
};
//再用数组包装
[muarray addObject:dic];
}
return muarray;
}
@end
ViewController.h文件
#import <UIKit/UIKit.h>
#import "User.h"
#import "ChakanViewController.h"
@interface ViewController : UIViewController
@property(nonatomic,strong)UITextField * shangPinMingShuRuKuang;
@property(nonatomic,strong)UITextField *jiaGeShuRuKuang;
@property(nonatomic,strong)UITextField * kuCunShuRuKuang;
@property(nonatomic,strong)ChakanViewController * chakanjiemian;
@end
ViewController.m文件
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//商品名标签
UILabel * mingzilabel=[[UILabel alloc]initWithFrame:CGRectMake(40, 100, 80, 20)];
mingzilabel.textColor=[UIColor redColor];
mingzilabel.text=@"商品名:";
[self.view addSubview:mingzilabel];
//商品名输入框
_shangPinMingShuRuKuang=[[UITextField alloc]initWithFrame:CGRectMake(100, 100, 200, 25)];
//设置边框宽度
_shangPinMingShuRuKuang.layer.borderWidth=2;
//设置边框颜色
_shangPinMingShuRuKuang.layer.borderColor=[UIColor redColor].CGColor;
[self.view addSubview:_shangPinMingShuRuKuang];
//商品价格标签
UILabel * jiagelabel=[[UILabel alloc]initWithFrame:CGRectMake(40, 140,80 , 20)];
jiagelabel.textColor=[UIColor redColor];
jiagelabel.text=@"价格:";
[self.view addSubview:jiagelabel];
//商品价格输入框
_jiaGeShuRuKuang=[[UITextField alloc]initWithFrame:CGRectMake(100, 140, 200, 25)];
_jiaGeShuRuKuang.layer.borderColor=[UIColor redColor].CGColor;
_jiaGeShuRuKuang.layer.borderWidth=2;
[self.view addSubview:_jiaGeShuRuKuang];
//库存标签
UILabel * kuCunlabel=[[UILabel alloc]initWithFrame:CGRectMake(40, 180,80 , 20)];
kuCunlabel.textColor=[UIColor redColor];
kuCunlabel.text=@"库存:";
[self.view addSubview:kuCunlabel];
//库存输入框
_kuCunShuRuKuang=[[UITextField alloc]initWithFrame:CGRectMake(100, 180, 200,25 )];
_kuCunShuRuKuang.layer.borderColor=[UIColor redColor].CGColor;
_kuCunShuRuKuang.layer.borderWidth=2;
[self.view addSubview:_kuCunShuRuKuang];
//添加按钮
UIButton * tianJiabutton=[[UIButton alloc]initWithFrame:CGRectMake(80, 260, 50, 20)];
tianJiabutton.backgroundColor=[UIColor redColor];
[tianJiabutton setTitle:@"添加" forState:UIControlStateNormal];
[self.view addSubview:tianJiabutton];
[tianJiabutton addTarget:self action:@selector(tianjia) forControlEvents:UIControlEventTouchUpInside];
//查看按钮
UIButton * chaKanbutton=[[UIButton alloc]initWithFrame:CGRectMake(230, 260, 50, 20)];
chaKanbutton.backgroundColor=[UIColor redColor];
[chaKanbutton setTitle:@"查看" forState:UIControlStateNormal];
[self.view addSubview:chaKanbutton];
[chaKanbutton addTarget:self action:@selector(chakan) forControlEvents:UIControlEventTouchUpInside];
NSLog(@"添加");
}
-(void)tianjia{
User *user=[[User alloc]init];
//向数据库插值
[user addNewGoods:_shangPinMingShuRuKuang.text withPrice:_jiaGeShuRuKuang.text andStorage:_kuCunShuRuKuang.text];
}
-(void)chakan{
ChakanViewController * II=[[ChakanViewController alloc]init];
[self presentViewController:II animated:YES completion:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
ChakanViewController.h文件
#import <UIKit/UIKit.h>
@interface ChakanViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>
@property(nonatomic,strong)UITableView * tableview;
//定义一个数组去接收数据库中返回的值
@property(nonatomic,strong)NSMutableArray * muarray;
@end
ChakanViewController.m文件
#import "ChakanViewController.h"
#import "User.h"
@interface ChakanViewController ()
@end
@implementation ChakanViewController
- (void)viewDidLoad {
[super viewDidLoad];
_tableview =[[UITableView alloc]initWithFrame:CGRectMake(0,40 , 400, 700)];
self.view.layer.backgroundColor=[UIColor whiteColor].CGColor;
_tableview.dataSource=self;
_tableview.delegate=self;
[self.view addSubview:_tableview];
UIButton * fanhui=[[UIButton alloc]initWithFrame:CGRectMake(10, 10, 40, 20)];
fanhui.layer.backgroundColor=[UIColor redColor].CGColor;
[fanhui setTitle:@"返回" forState:UIControlStateNormal];
[fanhui addTarget:self action:@selector(fanhui) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:fanhui];
//实例化一个User 用它的方法
User * user=[User new];
//将User中的返回数据赋值给_muarray
_muarray=[user showNewGoodsInformation];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [_muarray count];
}
-(UITableViewCell * )tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString * cell=@"cell";
UITableViewCell * Cell=[tableView dequeueReusableCellWithIdentifier:cell];
if (Cell ==nil) {
Cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cell];
}
//数组中的是字典 现在用字典将其接收
NSDictionary * dic=_muarray[indexPath.row];
NSString *s=[NSString stringWithFormat:@"数量:%@ 价格: %@",dic[@"goodsStorge"], dic[@"goodsPrice"] ];
Cell.textLabel.text=dic[@"goodsName"];
Cell.detailTextLabel.text=s;
return Cell;
}
-(void)fanhui{
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
