图书查询
#import "TableViewController.h"
#import "InsertViewController.h"
#import "DataHandel.h"
#import "book.h"
#import "MJRefresh.h"
@interface TableViewController ()
{
NSMutableArray *tableArr;
}
@end
@implementation TableViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = @"图书列表";
//导航栏右按钮 t t d s s s d s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s s d d d
UIBarButtonItem *right = [[UIBarButtonItem alloc]initWithTitle:@"+" style:UIBarButtonItemStylePlain target:self action:@selector(addBook)];
self.navigationItem.rightBarButtonItem = right;
[self setUpRefresh];
}
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
tableArr = [[DataHandel sharedFMDB]selectAll];
NSLog(@"%@",tableArr);
[self.tableView reloadData];
}
-(void)setUpRefresh
{
[self.tableView addHeaderWithTarget:self action:@selector(headerRefreshBook) dateKey:@"table"];
self.tableView.headerPullToRefreshText = @"下拉刷新";
}
-(void)headerRefreshBook
{
book *b = [[book alloc]init];
b.name = @"张超的操蛋人生";
b.author = @"熊哥";
b.price = @"100";
[[DataHandel sharedFMDB]insertBook:b];
[tableArr insertObject:b atIndex:0];
[self.tableView reloadData];
[self.tableView headerEndRefreshing];
}
-(void)addBook
{
InsertViewController *insert = [[InsertViewController alloc]init];
[self.navigationController pushViewController:insert animated:YES];
}
#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return tableArr.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *str = @"sd";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:str];
if (!cell) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:str];
}
book *b = [tableArr objectAtIndex:indexPath.row];
cell.textLabel.text = b.name;
cell.detailTextLabel.text = [NSString stringWithFormat:@"作者：%@ 价格：%@",b.author,b.price];
return cell;
}
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
book *b = [tableArr objectAtIndex:indexPath.row];
[[DataHandel sharedFMDB]deleteBook:b];
[tableArr removeObjectAtIndex:indexPath.row];
[self.tableView reloadData];
}
@end
#import <UIKit/UIKit.h>
@interface InsertViewController : UIViewController
@property (strong, nonatomic) IBOutlet UITextField *name;
@property (strong, nonatomic) IBOutlet UITextField *author;
@property (strong, nonatomic) IBOutlet UITextField *price;
- (IBAction)save:(id)sender;
@end
#import "AppDelegate.h"
#import "TableViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
TableViewController *tab = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tab];
self.window.rootViewController = nav;
return YES;
}
#import "AppDelegate.h"
#import "TableViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
TableViewController *tab = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tab];
self.window.rootViewController = nav;
return YES;
}
#import "AppDelegate.h"
#import "TableViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
TableViewController *tab = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tab];
self.window.rootViewController = nav;
return YES;
}
#import "AppDelegate.h"
#import "TableViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
TableViewController *tab = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tab];
self.window.rootViewController = nav;
return YES;
}
#import "AppDelegate.h"
#import "TableViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
TableViewController *tab = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tab];
self.window.rootViewController = nav;
return YES;
}
#import "InsertViewController.h"
#import "DataHandel.h"
#import "book.h"
@interface InsertViewController ()
@end
@implementation InsertViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
/**
* 添加方法
*
*/
- (IBAction)save:(id)sender
{
book *b = [[book alloc] init];
b.name = self.name.text;
b.author = self.author.text;
b.price = self.author.text;
[[DataHandel sharedFMDB]insertBook:b];
[self.navigationController popToRootViewControllerAnimated:YES];
[[[UIAlertView alloc]initWithTitle:@"添加成功" message:nil delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil]show];
}
@end
#import <Foundation/Foundation.h>
#import "FMDatabase.h"
#import "book.h"
@interface DataHandel : NSObject
+(instancetype)sharedFMDB;
-(void)insertBook:(book *)bo;
-(void)deleteBook:(book *)bo;
-(NSMutableArray *)selectAll;
@end
#import "DataHandel.h"
static DataHandel *data = nil;
static FMDatabase *fmdb = nil;
@implementation DataHandel
/**
* 单例
*/
+(instancetype)sharedFMDB
{
if (data == nil) {
data = [[DataHandel alloc] init];
[data initFMDB];
}
return data;
}
+(instancetype)allocWithZone:(struct _NSZone *)zone
{
if (!data) {
data = [super allocWithZone:zone];
}
return data;
}
-(id)mutableCopy
{
return self;
}
-(id)copy
{
return self;
}
//创建数据库
-(void)initFMDB
{
NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject];
//*********************************** 换成自己名字**************************//
NSString *path = [docPath stringByAppendingPathComponent:@"zhouwenhuan.sqlite"];
NSLog(@"%@",path);
fmdb = [FMDatabase databaseWithPath:path];
if ([fmdb open]) {
[fmdb executeUpdate:@"CREATE TABLE book(idd INTEGER PRIMARY KEY AUTOINCREMENT , name TEXT, author TEXT, price TEXT)"];
[fmdb close];
}
else
NSLog(@"创建数据表失败");
}
/**
* 查
*
* @return 所查出来的数组返回
*/
-(NSMutableArray *)selectAll
{
NSMutableArray *arr = [NSMutableArray array];
[fmdb open];
FMResultSet *fmSet = [[FMResultSet alloc]init];
fmSet = [fmdb executeQuery:@"SELECT * FROM book"];
while ([fmSet next]) {
int idd = [fmSet intForColumn:@"idd"];
NSString *name = [fmSet stringForColumn:@"name"];
NSString *author = [fmSet stringForColumn:@"author"];
NSString *price = [fmSet stringForColumn:@"price"];
book *b = [[book alloc]init];
b.idd = idd;
b.name = name;
b.author = author;
b.price = price;
NSLog(@"id = %d",idd);
[arr addObject:b];
}
[fmdb close];
return arr;
}
/**
* 增
*
* @param book Model类
*/
-(void)insertBook:(book *)bo
{
BOOL flag = false;
NSArray *arrBook = [self selectAll];
for (book *b in arrBook) {
if ([b.name isEqualToString:bo.name ] && [b.author isEqualToString:bo.author] && [b.price isEqualToString:bo.price]) {
flag = true;
}
}
if (flag) {
NSLog(@"数据相同");
}
else
{
[fmdb open];
BOOL addFlag = [fmdb executeUpdate:@"INSERT INTO book VALUES(null,?,?,?)",bo.name,bo.author,bo.price ];
if (addFlag) {
NSLog(@"添加成功");
}
else
{
NSLog(@"添加失败");
}
[fmdb close];
}
}
/**
* 删
*
* @param book Model类
*/
-(void)deleteBook:(book *)bo
{
[fmdb open];
NSString *sql = [NSString stringWithFormat:@"DELETE FROM book WHERE idd = %d",bo.idd];
BOOL deleteFlag = [fmdb executeUpdate:sql];
if (deleteFlag) {
NSLog(@"删除成功");
}
else
NSLog(@"删除失败");
[fmdb close];
}
@end
#import <Foundation/Foundation.h>
@interface book : NSObject
@property (nonatomic,strong) NSString *name;
@property (nonatomic,strong) NSString *author;
@property (nonatomic,strong) NSString *price;
@property (nonatomic,assign) int idd;
@end
#import "AppDelegate.h"
#import "TableViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
TableViewController *tab = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tab];
self.window.rootViewController = nav;
return YES;
}