FMDB数据库的简单实用

 1 #define dataBasePath [[(NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES)) lastObject]stringByAppendingPathComponent:dataBaseName]
 2 #define dataBaseName @"MyDatabase.db"
 3 #import "ViewController.h"
 4 #import "FMDatabase.h"
 5 #import "FMDatabaseAdditions.h"
 6 #import "FMDatabaseQueue.h"
 7 
 8 
 9 #import "MYDataBase.h"
10 @interface ViewController ()
11 
12 @end
13 
14 @implementation ViewController
15 
16 - (void)viewDidLoad
17 {
18     [super viewDidLoad];
19     // Do any additional setup after loading the view, typically from a nib.
20     FMDatabase *db = [FMDatabase databaseWithPath:dataBasePath];
21     if (![db open]) {
22         NSLog(@"no");
23         return;
24     }NSLog(@"111");
25     //建立新表
26     [db executeUpdate:@"CREATE TABLE PersonList (Name text, Age integer, Sex integer, Phone text, Address text, Photo blob)"];
27     
28     //插入一条数据
29     [db executeUpdate:@"INSERT INTO PersonList (Name, Age, Sex, Phone, Address, Photo) VALUES (?,?,?,?,?,?)",
30      @"Jone", [NSNumber numberWithInt:20], [NSNumber numberWithInt:0], @"091234567", @"Taiwan, R.O.C", nil];
31     //更新数据
32     [db executeUpdate:@"UPDATE PersonList SET Age = ? WHERE Name = ?",[NSNumber numberWithInt:30],@"John"];
33     
34     
35    //取数据
36     //返回数据库中第一条满足条件的结果
37     NSString *aa=[db stringForQuery:@"SELECT Name FROM User WHERE Name = ?",@"John"];
38     
39     //fan返回满足条件的全部结果
40    // FMResultSet *rs = [db executeQuery:@"SELECT Name, Age FROM PersonList"];
41     //
42     FMResultSet *rs = [db executeQuery:@"SELECT * FROM PersonList"];
43     
44     while ([rs next]) {
45         
46         NSString *name = [rs stringForColumn:@"Name"];
47         
48         int age = [rs intForColumn:@"Age"];
49         NSLog(@"name=%@,age = %d",name,age);
50         
51     }
52     
53     [rs close];
54     
55     
56     
57     //快速读取一个row的一个数据
58     //找地址
59     
60     NSString *address = [db stringForQuery:@"SELECT Address FROM PersonList WHERE Name = ?",@"John"];
61     NSLog(@"address=%@",address);
62                          //找年齡
63                     
64                          int age = [db intForQuery:@"SELECT Age FROM PersonList WHERE Name = ?",@"John"];
65     
66     NSLog(@"age2 = %d",age);
67     
68     
69     //可以多个参数穿进去
70     NSDictionary *argsDict = [NSDictionary dictionaryWithObjectsAndKeys:@"donghongqiang", @"name",@"14",@"Age",@"dezhou",@"Address", nil];
71     [db executeUpdate:@"INSERT INTO PersonList (Name,Age,Address) VALUES (:name,:Age,:Address)" withParameterDictionary:argsDict];
72 
73     
74     NSString *address2 = [db stringForQuery:@"SELECT Address FROM PersonList WHERE Name = ?",@"donghongqiang"];
75     NSLog(@"address2=%@",address2);
76     
77     
78 }

 1 -(void)FMDbatabasequeue
 2 
 3 {
 4 
 5     
 6 
 7     // 创建，最好放在一个单例的类中
 8 
 9     FMDatabaseQueue *queue = [FMDatabaseQueuedatabaseQueueWithPath:dataBasePath];
10 
11     
12 
13     // 使用
14 
15     [queue inDatabase:^(FMDatabase *db) {
16 
17         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:1]];
18 
19         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:2]];
20 
21         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:3]];
22 
23         
24 
25         FMResultSet *rs = [db executeQuery:@"select * from foo"];
26 
27         while ([rs next]) {
28 
29             // …
30 
31         }
32 
33     }];
34 
35     
36 
37     // 如果要支持事务
38 
39     [queue inTransaction:^(FMDatabase *db, BOOL *rollback) {
40 
41         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:1]];
42 
43         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:2]];
44 
45         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:3]];
46 
47         
48 
49 //        if (whoopsSomethingWrongHappened) {
50 
51 //            *rollback = YES;
52 
53 //            return;
54 
55 //        }
56 
57         // etc…
58 
59         [db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumbernumberWithInt:4]];
60 
61     }];
62 
63     
64 
65     
66 
67     
68 
69     
70 
71     
72 
73     [queue close];
74 
75 }
76 
77  

//  Created by apple on 14-4-28.
//  Copyright (c) 2014年 apple. All rights reserved.
//
#define dataBasePath [[(NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES)) lastObject]stringByAppendingPathComponent:dataBaseName]
#define dataBaseName @"MyDatabase.db"

#import <Foundation/Foundation.h>
#import "FMDatabaseQueue.h"
#import "Pins.h"
#import "FMDatabaseAdditions.h"
#import "FMDatabase.h"
@interface MYDataBase : NSObject
{
    
}
@property(nonatomic,retain)FMDatabaseQueue *dbQueue;

+(MYDataBase*)sharedInstance;
-(Pins*)rsToPins:(FMResultSet*)rs;
- (void)addPins:(Pins*)pin;
- (NSArray *)getPins;
@end

//
//  MYDataBase.m
//  TextFMDB
//
//  Created by apple on 14-4-28.
//  Copyright (c) 2014年 apple. All rights reserved.
//

#import "MYDataBase.h"
static MYDataBase *mydatabase = nil;
@implementation MYDataBase

- (id)init
{
    
    self = [super init];
    if (self)
    {
       // self.dbFile = [DbFileManager dbFilePath];
        self.dbQueue = [FMDatabaseQueue databaseQueueWithPath:dataBasePath];
        
        
    }
    return  self;
}
+(MYDataBase*)sharedInstance{
    
    
    @synchronized(self)
    {
        if (mydatabase == nil)
            mydatabase = [[MYDataBase alloc] init];
    }
    return mydatabase;
}

//huoq获取pin
-(Pins*)rsToPins:(FMResultSet*)rs
{
    Pins *pin = [[Pins alloc] init] ;
//    user.ID = [rs intForColumn:@"_id"];
//    user.name = [rs stringForColumn:@"name"];
//    user.password = [rs  stringForColumn:@"password"];
    return pin;
    
}

- (void)addPins:(Pins*)pin
{
    [self.dbQueue inTransaction:^(FMDatabase *db, BOOL *rollback) {
        [db open];
//        NSString *sql = @"insert into tbl_user(name, password) values (?, ?)";
//        [db executeUpdate:sql,user.name, user.password];
        [db close];
    }];
}

- (NSArray *)getPins;
{
    __block NSMutableArray *users = [[NSMutableArray alloc] init];
    [self.dbQueue inDatabase:^(FMDatabase *db)   {
        [db open];
        NSString *sql = @"select * from tbl_user ";
        FMResultSet *rs = [db executeQuery:sql];
        while ([rs next])
        {
            [users addObject:[self rsToPins :rs]];
        }
        [db close];
    }];
    return users;
}

@end

#import <Foundation/Foundation.h>

@interface Pins : NSObject
{
    
}
@property(nonatomic,assign)int ID;
@property(nonatomic,retain)NSString *name;
@property(nonatomic,retain)NSString *address;
@property(nonatomic,retain)NSData *imagedata;

//+(Pins*)sharedInstance;

@end

#import "Pins.h"

@implementation Pins
@synthesize ID = _ID,name = _name,address = _address,imagedata = _imagedata;



@end