草稿FMDB

// UserManager.m

// ChiHuo

// Created by administrator on 12-8-28.

#import "UserManager.h"

#import "AppDelegate.h"

#import "User.h"

@implementation UserManager

@synthesize db = _db;

-(void)showAlert:(NSString *)msg

{

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"

message:msg

delegate:nil

cancelButtonTitle:@"OK"

otherButtonTitles:nil];

[alert show];

[alert release];

}

-(BOOL)openDB

{

NSString *dataPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/chihuo.sqlite"];

self.db = [FMDatabase databaseWithPath:dataPath];

if(![_db open])

{

[self showAlert:@"数据库打开失败"];

return NO;

}

return YES;

}

-(void)registerWithName:(NSString *)name Password:(NSString *)pwd Phone:(NSString *)phone Address:(NSString *)address Email:(NSString *)email

{

if([self openDB])

{

if([_db executeUpdate:[NSString stringWithFormat:@"insert into member (name,password,phone,address,email) values ('%@','%@','%@' )",name,pwd,email]])

[self showAlert:@"注册成功"];

else

[self showAlert:@"注册失败"];

}

-(User *)loginUserByName:(NSString *)name AndPassword:(NSString *)pwd

{

User *resUser = [[[User alloc] init] autorelease];

resUser.userID = 0;

if([self openDB])

{

FMResultSet *fResult = [_db executeQuery:[NSString stringWithFormat:@"select * from member where name = '%@' and password = '%@'",pwd ]];

if([fResult next])

{

resUser.userID = [fResult intForColumn:@"memberID"];

resUser.name = [ fResult stringForColumn:@"name"];

resUser.pwd = [fResult stringForColumn:@"password"];

resUser.phone = [fResult stringForColumn:@"phone"];

resUser.address = [fResult stringForColumn:@"address"];

resUser.email = [fResult stringForColumn:@"email"];

}

[fResult close];

}

[_db close];

return resUser;

}

-(User *)getUserByID:(int)uid

{

User *resUser = [[[User alloc] init] autorelease];

resUser.userID = 0;

if([self openDB])

{

FMResultSet *fResult = [_db executeQuery:[NSString stringWithFormat:@"select * from member where memberID = %d",uid ]];

if([fResult next])

{

resUser.userID = [fResult intForColumn:@"memberID"];

resUser.name = [ fResult stringForColumn:@"name"];

resUser.pwd = [fResult stringForColumn:@"password"];

resUser.phone = [fResult stringForColumn:@"phone"];

resUser.address = [fResult stringForColumn:@"address"];

resUser.email = [fResult stringForColumn:@"email"];

}

[fResult close];

}

[_db close];

return resUser;

}

-(void)leaveMessage:(NSString *)message andMemberID:(int)mid

{

if([self openDB])

{

if([_db executeUpdate:[NSString stringWithFormat:@"insert into message (message,memberID) values ('%@',%d)",message,mid]])

[self showAlert:@"吐槽成功"];

else

[self showAlert:@"吐槽失败"];

}

[_db close];

}

-(NSMutableArray *)returnAllMessage;

{

NSMutableArray *msgArray = [[[NSMutableArray alloc] init] autorelease];

if([self openDB])

{

FMResultSet *fResult = [_db executeQuery:@"select * from message"];

while([fResult next])

{

//根据留言者ID获取留言人信息

int mid = [fResult intForColumn:@"memberID"];

User * msgUser = [self getUserByID:mid];

NSMutableDictionary *msgDic = [NSMutableDictionary dictionary];

[msgDic setObject:[fResult stringForColumn:@"message"] forKey:@"message"];

[msgDic setObject:msgUser.name forKey:@"name"];

[msgArray addObject:msgDic];

// [msgDic release];

}

[fResult close];

}

[_db close];

return msgArray;

}

-(BOOL)modifyPwdByUserID:(int)mid withNewPwd:(NSString *)pwd

{

if([self openDB])

{

if([_db executeUpdate:[NSString stringWithFormat:@"update member set password = '%@' where memberID = %d",mid]])

[self showAlert:@"密码修改成功"];

else

{

[self showAlert:@"密码修改失败"];

return NO;

}

[_db close];

return YES;

}

-(NSMutableArray *)returnAllCar

{

NSMutableArray *carArray = [[[NSMutableArray alloc] init] autorelease];

if([self openDB])

{

AppDelegate *appDlg = (AppDelegate *)[[UIApplication sharedApplication] delegate];

//从AppDelegate中的carDic中依次取出所有的key和value的值

//获取字典中的所有的Key的值：keyEnumerator；Value值：objectEnumerator

NSEnumerator *keyEnum = [appDlg.carDic keyEnumerator];

id obj; //定义一个不确定类型的对象

//遍历字典输出所有的key

while (obj = [keyEnum nextObject])

{

NSLog(@"键值为：%@",obj);

//定义一个字典用于向数组中放入数据

NSMutableDictionary *car = [NSMutableDictionary dictionary];

//根据根据键值获取其对应的value（表示此菜的数目）的值

id objValue = [appDlg.carDic objectForKey:obj];

[car setObject:obj forKey:@"foodID"]; //存入食物的ID

[car setObject:objValue forKey:@"count"];//存入食物的数量count

//根据食物的ID获取食物的信息

FMResultSet *foodResult = [_db executeQuery:[NSString stringWithFormat:@"select * from food where foodID = %@",obj]];

if([foodResult next])

{

//存入食物的名称name

//存入食物价格price

//存入食物的图片image

[car setObject:[foodResult stringForColumn:@"name"] forKey:@"name"];

[car setObject:[foodResult stringForColumn:@"price"] forKey:@"price"];

[car setObject:[foodResult stringForColumn:@"image"] forKey:@"image"];

}

[foodResult close];

[carArray addObject:car];

}

[_db close];

return carArray;

}

-(float)returnMoney

{

float money = 0;

if([self openDB])

{

AppDelegate *appDlg = (AppDelegate *)[[UIApplication sharedApplication] delegate];

//从AppDelegate中的carDic中依次取出所有的key和value的值

//获取字典中的所有的Key的值：keyEnumerator；Value值：objectEnumerator

NSEnumerator *keyEnum = [appDlg.carDic keyEnumerator];

id obj; //定义一个不确定类型的对象

//遍历字典输出所有的key

while (obj = [keyEnum nextObject])

{

int foodID = [obj integerValue]; //存入食物的ID

int count = [[appDlg.carDic objectForKey:obj] integerValue]; //存入食物的数量

int memberID = appDlg.user.userID;

NSLog(@"键值为：%@",obj);

//将数据存入数据库中

if([_db executeUpdate:[NSString stringWithFormat:@"insert into car (foodID,count,memberID) values (%d,%d,foodID,memberID]])

{

//根据食物的ID获取食物的信息

FMResultSet *foodResult = [_db executeQuery:[NSString stringWithFormat:@"select * from food where foodID = %@",obj]];

if([foodResult next])

{

int oldNum = [[foodResult stringForColumn:@"sale"] integerValue];

//计算所有总订单的价钱

money = money + [[foodResult stringForColumn:@"price"] floatValue] * count;

[_db executeUpdate:[NSString stringWithFormat:@"update food set sale = %d where foodID = %d",count + oldNum,foodID]];

}

[foodResult close];

}

else

[self showAlert:@"订单提交失败"];

//根据食物的ID获取食物的信息

FMResultSet *foodResult = [_db executeQuery:[NSString stringWithFormat:@"select * from food where foodID = %@",obj]];

if([foodResult next])

{

//计算所有总订单的价钱

money = money + [[foodResult stringForColumn:@"price"] floatValue] * count;

}

[foodResult close];

}

[_db close];

[self showAlert:@"订单提交成功"];

return money;

}

@end

原文链接：https://www.f2er.com/sqlite/201625.html

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