1.创建NSObject
2.用单例模式创建
+(id)shareDataCenter
{//创建单例
DataCenter*dataCeter;
if(dataCeter==nil) {
dataCeter=[[DataCenteralloc]init];
}
returndataCeter;
}
3.重写父类init方法；
-(instancetype)init
{
self=[superinit];
if(self) {
[selfinitDataBase];
}
returnself;
}
4.在initDataBase方法中创建数据库
5.其它页面进行使用时：
1.加入数据库头文件；#import"DataCenter.h"
2.实例化单例对象；_center=[DataCentershareDataCenter];
3.用_center进行数据库操作；
//
// DataCenter.h
// aixianmian爱限免
//
// Copyright (c) 2015年Mickey. All rights reserved.
//
#import
#import"FMDatabase.h"//数据库第三方
#import"DetailModel.h"//详细信息模型
@interfaceDataCenter :NSObject
+(id)shareDataCenter;//单例模式
@property(nonatomic,strong)FMDatabase*dataBase;
#pragma mark -主页数据
//插入主页的数据
-(void)insertUserFaceDataWith:(NSArray*)arry;
//查询所有数据
-(NSArray*)selectRecordOfData;
//移除数据库数据
-(BOOL)deleteRecordFromOfData;
#pragma mark -收藏
//添加收藏
-(BOOL)addRecordWithAppModel:(DetailModel*)model;
//删除收藏通过ID
-(BOOL)deleteRecordWithAppId:(NSString*)appId;
//删除收藏通过字段
-(BOOL)deleteRecordWithByName:(NSString*)name;
//查询收藏
-(BOOL)selectRecordWith:(NSString*)appId;
//查询收藏的图片链接
-(NSArray*)selectImgUrlRecord;
#pragma mark -专题数据库
//创建专题的表
-(BOOL)createTopicTable;
//创建推荐应用的表
-(BOOL)createSuggestTable;
//插入专题的数据
-(void)insertTopicDataWith:(NSArray*)array;
//插入推荐应用的数据
-(void)insertSuggestDataWith:(NSArray*)array andTitle:(NSString*)title;
//查询专题和推荐应用的数据
-(NSArray*)selectTopicdata;
//删除表
-(void)deleteDataFromTable;
@end
//
// DataCenter.m
// aixianmian爱限免
// Copyright (c) 2015年Mickey. All rights reserved.
//
#import"DataCenter.h"
#import"DataModelOfTopic.h"
#import"applicationsModel.h"
#import"DataModel.h"
@implementationDataCenter
+(id)shareDataCenter
{//创建单例
DataCenter *dataCeter;
if(dataCeter==nil) {
dataCeter=[[DataCenter alloc]init];
}
returndataCeter;
}
-(instancetype)init
{
self=[superinit];
if(self) {
[selfinitDataBase];
}
returnself;
}
-(void)initDataBase
{
//创建数据库
NSString *strPath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES)[0];
NSString *dbPath=[strPath stringByAppendingPathComponent:@"MM.db"];//拼接数据库名
// NSLog(@"%@",dbPath);//获取沙盒路径
_dataBase=[FMDatabase databaseWithPath:dbPath];
if([_dataBaseopen]) {//判断数据库是否打开
// NSLog(@"数据库成功打开");
}else
{
NSLog(@"数据库打开失败");
}
//创建表(收藏)
NSString*sqlCreateTable=@"create table if not exists ybh(Id integer primary key autoincrement,name text,applicationId text)";
BOOLb=[_dataBaseexecuteUpdate:sqlCreateTable];
if(!b) {
NSLog(@"创建失败");
}
//添加收藏图片路径字段
NSString*sqlAdd=@"alter table ybh add column ulrImg text";
[_dataBaseexecuteUpdate:sqlAdd];
//添加收藏类型字段
NSString*sqlAddcate=@"alter table ybh add column categoryName text";
[_dataBaseexecuteUpdate:sqlAddcate];
//创建表2(APP)
NSString*appSql=@"create table if not exists appTabl (id integer primary key autoincrement not null, applicationId text,name text,iconUrl text,type text,lastPrice text,currentPrice text,startCount text,shareTime text,favorites text,downloads text)";
BOOLb1=[_dataBaseexecuteUpdate:appSql];
if(!b1) {
NSLog(@"创建App表格失败");
}
[selfcreateTopicTable];
[selfcreateSuggestTable];
}
#pragma mark -主页数据
//插入主页的数据
-(void)insertUserFaceDataWith:(NSArray *)arry
{
NSString * sql =@"insert into appTabl (applicationId,name,iconUrl,type,lastPrice,currentPrice,startCount,shareTime,favorites,downloads) values (?,?,?,?,?,?,?,?,?,?)";
for(inti=0; i
DataModel *model=arry[i];
[_dataBase executeUpdate:sql,model.applicationId,model.name,model.iconUrl,model.categoryName,model.lastPrice,model.currentPrice,model.starCurrent,model.shares,model.favorites,model.downloads];
}
}
//查询所有数据
-(NSArray *)selectRecordOfData
{
NSString *sql=@"select * from appTabl";
NSMutableArray *arr=[[NSMutableArray alloc]init];
FMResultSet *set=[_dataBase executeQuery:sql];
while(set.next) {
DataModel *model=[[DataModel alloc]init];
model.applicationId = [set stringForColumn:@"applicationId"];
model.name = [set stringForColumn:@"name"];
model.iconUrl = [set stringForColumn:@"iconUrl"];
model.categoryName = [set stringForColumn:@"type"];
model.lastPrice = [set stringForColumn:@"lastPrice"];
model.starCurrent = [set stringForColumn:@"startCount"];
model.shares = [set stringForColumn:@"shareTime"];
model.favorites = [set stringForColumn:@"favorites"];
model.downloads = [set stringForColumn:@"downloads"];
model.currentPrice = [set stringForColumn:@"currentPrice"];
[arr addObject:model];
}
returnarr;
}
//移除数据
-(BOOL)deleteRecordFromOfData
{
NSString *sqlDele=@"delete from appTabl";
BOOLb=[_dataBase executeUpdate:sqlDele];
returnb;
}
#pragma mark -详情页收藏(按钮)
//添加收藏
-(BOOL)addRecordWithAppModel:(DetailModel *)model
{
NSString *sql=@"insert into ybh(name,applicationId,ulrImg,categoryName)values(?,?,?,?)";
BOOLb=[_dataBase executeUpdate:sql,model.name,model.applicationId,model.iconUrl,model.categoryName];
returnb;
}
//删除收藏
-(BOOL)deleteRecordWithAppId:(NSString *)appId
{
NSString *deleteSql=@"delete from ybh where applicationId=?";
BOOLb=[_dataBase executeUpdate:deleteSql,appId];
returnb;
}
//删除收藏通过name字段
-(BOOL)deleteRecordWithByName:(NSString *)name
{
NSString *deleteSql=@"delete from ybh where name=?";
BOOLb=[_dataBase executeUpdate:deleteSql,name];
returnb;
}
//查询收藏的图片链接
-(NSArray *)selectImgUrlRecord
{
NSString *selectSql=@"select * from ybh";
NSMutableArray *arr=[[NSMutableArray alloc]init];
FMResultSet *set=[_dataBase executeQuery:selectSql];
while(set.next) {
DetailModel *detaiModel=[[DetailModel alloc]init];
detaiModel.iconUrl=[set stringForColumn:@"ulrImg"];
detaiModel.name=[set stringForColumn:@"name"];
detaiModel.applicationId=[set stringForColumn:@"applicationId"];
detaiModel.categoryName=[set stringForColumn:@"categoryName"];
[arr addObject:detaiModel];
}
returnarr;
}
//查询收藏
-(BOOL)selectRecordWith:(NSString *)appId
{
NSString *selectSql=@"select count(*)from ybh where applicationId=?";
FMResultSet *set=[_dataBase executeQuery:selectSql,appId];
intcount=0;
while(set.next) {
count=[set intForColumnIndex:0];
}
returncount>0;
}
//创建专题的表
-(BOOL)createTopicTable
{
//创建表
NSString *sqlCreateTable=@"create table if not exists TopicTable(id integer primary key autoincrement not null,title text,desc text,desc_img text,img text)";
BOOLb=[_dataBase executeUpdate:sqlCreateTable];
if(!b) {
NSLog(@"创建失败");
}
returnb;
}
//创建推荐应用的表
-(BOOL)createSuggestTable
{
//创建表
NSString *sqlCreateTable=@"create table if not exists SuggestTable(id integer primary key autoincrement not null,applicationId text,downloads text,iconUrl text,name text,ratingOverall text,starOverall text)";
BOOLb=[_dataBase executeUpdate:sqlCreateTable];
if(!b) {
NSLog(@"创建失败");
}
//添加字段
NSString *addSql=@"alter table SuggestTable add column title text";
[_dataBase executeUpdate:addSql];
returnb;
}
//插入专题的数据
-(void)insertTopicDataWith:(NSArray *)array
{
//由专题界面调用该方法将arry数据传输过来
NSString *sql=@"insert into TopicTable(title,desc,desc_img,img) values (?,?,?,?)";
for(inti=0; i
DataModelOfTopic *topic=array[i];
BOOLb=[_dataBase executeUpdate:sql,topic.title,topic.desc,topic.desc_img,topic.img];
if(b) {
// NSLog(@"专题插入成功");
[selfinsertSuggestDataWith:topic.arrApplications andTitle:topic.title];//调用插入推荐应用数据方法
}else
{
NSLog(@"专题插入失败");
}
}
}
//插入推荐应用的数据(由插入专题单独调用),在插入专题时插入推荐应用
-(void)insertSuggestDataWith:(NSArray *)array andTitle:(NSString *)title
{
//array由专题模型的数组属性传递,title为两个数据表的外键;
NSString *sql=@"insert into SuggestTable(title,applicationId,downloads,iconUrl,name,ratingOverall,starOverall)values(?,?,?,?,?,?,?)";
for(inti=0; i
applicationsModel *application=array[i];
BOOLb=[_dataBase executeUpdate:sql,title,application.applicationId,application.downloads,application.iconUrl,application.name,application.ratingOverall,application.starOverall];
if(b) {
// NSLog(@"推荐应用插入成功");
}else
{
NSLog(@"推荐应用插入失败");
}
}
}
//查询专题和推荐应用的数据
-(NSArray *)selectTopicdata
{
NSString *sql=@"select * from TopicTable";
NSMutableArray *arrDB=[[NSMutableArray alloc]init];
FMResultSet *set=[_dataBase executeQuery:sql];
while(set.next) {
DataModelOfTopic *topic=[[DataModelOfTopic alloc]init];
topic.title=[set stringForColumn:@"title"];
topic.desc=[set stringForColumn:@"desc"];
topic.desc_img=[set stringForColumn:@"desc_img"];
topic.img=[set stringForColumn:@"img"];
topic.arrApplications=[selfselectSuggesTableArrayTitle:topic.title];//调用推荐应用的查询方法,用外键title传入
[arrDB addObject:topic];
}
returnarrDB;
}
-(NSArray *)selectSuggesTableArrayTitle:(NSString*)title
{
NSString *sql=@"select * from SuggestTable where title=?";
NSMutableArray *arry=[[NSMutableArray alloc]init];
FMResultSet *set=[_dataBase executeQuery:sql,title];
while(set.next) {
applicationsModel *application=[[applicationsModel alloc]init];
application.applicationId=[set stringForColumn:@"applicationId"];
application.downloads=[set stringForColumn:@"downloads"];
application.iconUrl=[set stringForColumn:@"iconUrl"];
application.name=[set stringForColumn:@"name"];
application.ratingOverall=[set stringForColumn:@"ratingOverall"];
application.starOverall=[set stringForColumn:@"starOverall"];
[arry addObject:application];
}
returnarry;
}
#pragma mark -删除数据
-(void)deleteDataFromTable
{
NSString *sql=@"delete from TopicTable";
NSString *sqlSuggest=@"delete from SuggestTable";
[_dataBase executeUpdate:sql];
[_dataBase executeUpdate:sqlSuggest];
}
@end