iOS-FMDB数据库

#import "FMDataBaseC.h"
#import "AddViewController.h"
#import "UpViewController.h"
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
{
UITableView *theTableView;
NSMutableArray *arr;
}
@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

//创建表格
theTableView = [[UITableView alloc] initWithFrame:[UIScreen mainScreen].bounds];
[self.view addSubview:theTableView];
theTableView.delegate = self;
theTableView.dataSource = self;

//右按钮
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"+" style:UIBarButtonItemStylePlain target:self action:@selector(add)];
}
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
arr = [[FMDataBaseC shareData] getAll];
//刷新表格
[theTableView reloadData];

}
//添加
-(void)add
{
AddViewController *add = [[AddViewController alloc] init];
[self.navigationController pushViewController:add animated:YES];
}

//表格行数
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

return arr.count;
}
//表格单元格内容
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID];
}
Book *boo = arr[indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:@"书名：%@\n备注：%@",boo.nameBook,boo.beiZhu];
cell.textLabel.numberOfLines = 0;

return cell;
}
//表格行高
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 150;
}
//修改
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UpViewController *up = [[UpViewController alloc] init];
up.boo = arr[indexPath.row];

[self.navigationController pushViewController:up animated:YES];
}
//删除
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
Book *boo = arr[indexPath.row];
[[FMDataBaseC shareData] deleteData:boo];
[arr removeObjectAtIndex:indexPath.row];
[theTableView reloadData];
}

#import "FMDataBaseC.h"
@interface AddViewController ()
@property (strong, nonatomic) IBOutlet UITextField *nameBookTF;
@property (strong, nonatomic) IBOutlet UITextField *nameTF;
@property (strong, nonatomic) IBOutlet UITextField *fenLeiTF;
@property (strong, nonatomic) IBOutlet UITextField *priceTF;
@property (strong, nonatomic) IBOutlet UITextField *beiZhuTF;

@end

@implementation AddViewController

- (void)viewDidLoad {
[super viewDidLoad];

}
//添加
- (IBAction)addBtn:(id)sender
{
Book *boo = [[Book alloc] init];
boo.nameBook = self.nameBookTF.text;
boo.name = self.nameTF.text;
boo.fenLei = self.fenLeiTF.text;
boo.price = self.priceTF.text;
boo.beiZhu = self.beiZhuTF.text;
[[FMDataBaseC shareData] insertData:boo];

[self.navigationController popViewControllerAnimated:YES];
}

#import "Book.h"
@interface UpViewController : UIViewController
@property(nonatomic , strong)Book *boo;

#import "UpViewController.h"
#import "FMDataBaseC.h"
@interface UpViewController ()
@property (strong, nonatomic) IBOutlet UITextField *nameBookTF;
@property (strong, nonatomic) IBOutlet UITextField *nameTF;
@property (strong, nonatomic) IBOutlet UITextField *fenLeiTF;
@property (strong, nonatomic) IBOutlet UITextField *priceTF;
@property (strong, nonatomic) IBOutlet
cccd
UITextField *beiZhuTF;

@end

@implementation UpViewController

- (void)viewDidLoad {
[super viewDidLoad];

self.nameBookTF.text = self.boo.nameBook;
self.nameTF.text = self.boo.name;
self.fenLeiTF.text = self.boo.fenLei;
self.priceTF.text = self.boo.price;
self.beiZhuTF.text = self.boo.beiZhu;

}
//修改
- (IBAction)upBtn:(id)sender {
Book *boo = [[Book alloc] init];
boo.ids = self.boo.ids;
boo.nameBook = self.nameBookTF.text;
boo.name = self.nameTF.text;
boo.fenLei = self.fenLeiTF.text;
boo.price = self.priceTF.text;
boo.beiZhu = self.beiZhuTF.text;
[[FMDataBaseC shareData] upData:boo];

[self.navigationController popViewControllerAnimated:YES];
}

@interface Book : NSObject
@property(nonatomic , assign)NSInteger ids;
@property(nonatomic , strong)NSString *nameBook,*name,*fenLei,*price,*beiZhu;
@end

#import <Foundation/Foundation.h>
#import "Book.h"
#import <FMDatabase.h>
#import <FMResultSet.h>
@interface FMDataBaseC : NSObject

//单例
+(instancetype)shareData;
//添加
-(void)insertData:(Book *)book;
//删除
-(void)deleteData:(Book *)book;
//修改
-(void)upData:(Book *)book;
//查询
-(NSMutableArray *)getAll;

#import "FMDataBaseC.h"
static FMDataBaseC *fm = nil;
static FMDatabase *fmdb;
@implementation FMDataBaseC
//单例
+(instancetype)shareData
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
fm = [[FMDataBaseC alloc] init];
[fm initCre];
});
return fm;
}
+(instancetype)allocWithZone:(struct _NSZone *)zone
{
if (!fm) {
fm = [super allocWithZone:zone];
}
return fm;
}
-(id)copy{
return self;
}
-(id)mutableCopy{
return self;
}
//创建数据库
-(void)initCre
{
NSString *str = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *path = [str stringByAppendingPathComponent:@"BookManagerSy.DB"];
fmdb = [[FMDatabase alloc] initWithPath:path];
if ([fmdb open]) {
[fmdb executeUpdate:@"create table BookInfo(ids integer primary key autoincrement, nameBook text, name text, fenLei text, price text, beiZhu text)"];
NSLog(@"创建成功");
[fmdb close];
}else{
NSLog(@"创建失败");
}
}
//添加
-(void)insertData:(Book *)book
{
[fmdb open];
BOOL insert = [fmdb executeUpdate:@"insert into BookInfo values(null,?,?,?,?,?)",book.nameBook,book.name,book.fenLei,book.price,book.beiZhu];
if (insert) {
NSLog(@"添加成功");
}else{
NSLog(@"添加失败");
}
[fmdb close];
}
//删除
-(void)deleteData:(Book *)book
{
[fmdb open];
NSString *str = [NSString stringWithFormat:@"delete from BookInfo where ids = %ld",book.ids];
BOOL delete = [fmdb executeUpdate:str];
if (delete) {
NSLog(@"删除成功");
}else{
NSLog(@"删除失败");
}
[fmdb close];
}
//修改
-(void)upData:(Book *)book
{
[fmdb open];
NSString *str = [NSString stringWithFormat:@"update BookInfo set nameBook = '%@', name = '%@', fenLei = '%@', price = '%@', beiZhu = '%@' where ids = %ld",book.nameBook,book.name,book.fenLei,book.price,book.beiZhu,book.ids];
BOOL delete = [fmdb executeUpdate:str];
if (delete) {
NSLog(@"修改成功");
}else{
NSLog(@"修改失败");
}
[fmdb close];
}
//查询
-(NSMutableArray *)getAll
{
[fmdb open];
NSMutableArray *arr = [NSMutableArray array];
FMResultSet *fmset = [[FMResultSet alloc] init];
fmset = [fmdb executeQuery:@"select * from BookInfo"];
while ([fmset next]) {
NSInteger ids = [fmset intForColumn:@"ids"];
NSString *nameBook = [fmset stringForColumn:@"nameBook"];
NSString *name = [fmset stringForColumn:@"name"];
NSString *fenLei = [fmset stringForColumn:@"fenLei"];
NSString *price = [fmset stringForColumn:@"price"];
NSString *beiZhu = [fmset stringForColumn:@"beiZhu"];
Book *boo = [[Book alloc] init];
boo.ids = ids;
boo.nameBook = nameBook;
boo.name = name;
boo.fenLei = fenLei;
boo.price = price;
boo.beiZhu = beiZhu;
[arr addObject:boo];
}
[fmdb close];
return arr;
}