首先是主函数，其次是各个类函数，有三个类：News、Channel、ChannelManagment
=========================================================
主函数：
#import "News.h"
#import "Channel.h"
#import "ChannelManagement.h"
int main(int argc, const char * argv[]) {
@autoreleasepool {
//新闻对象
News
*ne1 = [[News alloc]initWithTitle:@"kill" link:[NSURL
URLWithString:@"www.baidu.com"] description:@"a people killed another
one!"];
News *ne2 = [[News alloc]initWithTitle:@"number" link:[NSURL URLWithString:@"www.number.com"] description:@"this is a number!"];
News *ne3 = [[News alloc]initWithTitle:@"hello" link:[NSURL URLWithString:@"www.hello.com"] description:@"helloworld!"];
NSLog(@"%@",ne1);
//对新闻进行输出
NSLog(@"%@",ne2);
//频道对象
Channel *ch1 = [[Channel alloc]initWithSubject:@"NEWS" link:[NSURL URLWithString:@"www.imau.edu.cn"]];
//添加新闻到频道里
[ch1 addNews:ne1];
[ch1 addNews:ne2];
[ch1 addNews:ne3];
Channel *ch2 = [[Channel alloc]initWithSubject:@"READ" link:[NSURL URLWithString:@"www.read.cn"]];
[ch2 addNews:ne1];
[ch2 addNews:ne2];
Channel *ch3 = [[Channel alloc]initWithSubject:@"MUSIC" link:[NSURL URLWithString:@"www.music.cn"]];
[ch3 addNews:ne1];
[ch3 addNews:ne2];
//NSLog(@"%@",ch1);
//频道管理
ChannelManagement * chma = [[ChannelManagement alloc]initWithFileName:@"News.txt"];
//添加函数 字典中添加新闻和频道
[chma addNews:ne1 andChannel:ch1];
[chma addNews:ne2 andChannel:ch2];
[chma addNews:ne2 andChannel:ch3];
NSLog(@"%@",chma);
NSLog(@"channelCount : %lu",[chma channelCount]);
NSInteger i = 1;
//查找字典中指定元素
NSLog(@"channelAtIndex %ld : %@",i,[chma channelAtIndex:i]);
//移除字典中指定元素
[chma removeChannels:i];
NSLog(@"%@",chma);
//移除频道下面的指定元素
[chma removeNews:i channel:ch2];
NSLog(@"%@",chma);
//查找频道下面指定的元素
NSLog(@"newsAtIndex %ld in channel %@ is: %@",i,@"ch2",[chma newsAtIndex:i channel:ch2]);
//计算字典中频道下指定的元素
NSLog(@"channel %@ count is : %ld",@"cha2",[chma newCountAtChannel:ch2]);
//保存函数 把字典中的成员写入文件
[chma write];
//还原函数 把字典中的成员读取出来
[chma read];
}
return 0;
}
=========================================================
News.h文件：
#import@interface News : NSObject<NSCopying,NSCoding>
{
NSString * title; //新闻标题
NSURL * link; //新闻链接
NSString * description; //新闻内容
}
@property(nonatomic,copy) NSString * title;
@property(nonatomic,retain) NSURL * link;
@property(nonatomic,copy)NSString * description;
-(id)copyWithZone:(NSZone *)zone;
//对数据成员进行初始化
-(id)initWithTitle:(NSString *)_title link:(NSURL *)_link description:(NSString *)_description;
//打印函数，输出新闻的头、链接、内容
-(NSString *)description;
@end
=========================================================
News.m 文件：
#import "News.h"
@implementation News
@synthesize title,link,description;
-(id)copyWithZone:(NSZone *)zone
{
News * n = [[[self class]allocWithZone:zone]init];
[n setTitle:title];
[n setLink:link];
[n setDescription:description];
return n;
}
//对数据成员进行初始化
-(id)initWithTitle:(NSString *)_title link:(NSURL *)_link description:(NSString *)_description
{
if (self = [super init]) {
title = _title;
link = _link;
description = _description;
}
return self;
}
//归档
-(void)encodeWithCoder:(NSCoder *)aCoder
{
[aCoder encodeObject:title forKey:@"TITLE"];
[aCoder encodeObject:link forKey:@"LINK"];
[aCoder encodeObject:description forKey:@"DESCRIPTION"];
}
//解档
-(id)initWithCoder:(NSCoder *)aDecoder
{
if (self = [super init]) {
title = [aDecoder decodeObjectForKey:@"TITLE"];
link = [aDecoder decodeObjectForKey:@"LINK"];
description = [aDecoder decodeObjectForKey:@"DESCRIPTION"];
}
return self;
}
//打印函数，输出新闻的头、链接、内容
-(NSString *)description
{
NSString * str = [NSString stringWithFormat:@"News==> title:%@,link:%@,description:%@",title,link,description];
return str;
}
@end
=========================================================
Chann.h 文件：
#import#import "News.h"
@interface Channel : NSObject<NSCopying,NSCoding>
{
NSString *subject; //频道标题
NSURL *link; //频道链接
NSMutableArray * arraylist; //频道中新闻列表
}
@property(nonatomic,copy) NSString * subject;
@property(nonatomic,retain) NSURL * link;
@property(nonatomic,retain) NSMutableArray * arraylist;
-(id)copyWithZone:(NSZone *)zone;
//初始化数据成员
-(id)initWithSubject:(NSString *)_subject link:(NSURL *)_link;
//添加新闻
-(void)addNews:(News *)_news;
//移除指定的下标元素
-(void)removeNews:(NSInteger)index;
//计算数组元素个数
-(NSInteger)newsCount;
//打印函数 输出标题、链接、数组
-(NSString *)description;
@end
=========================================================
Channel.m文件：
#import "Channel.h"
@implementation Channel
@synthesize subject,link,arraylist;
-(id)copyWithZone:(NSZone *)zone
{
Channel *ch = [[[self class]allocWithZone:zone]init];
[ch setSubject:subject];
[ch setLink:link];
[ch setArraylist:arraylist];
return ch;
}
//归档
-(void)encodeWithCoder:(NSCoder *)aCoder
{
[aCoder encodeObject:subject forKey:@"SUBJECT"];
[aCoder encodeObject:link forKey:@"LINK"];
[aCoder encodeObject:arraylist forKey:@"ARRAYLIST"];
}
//解档
-(id)initWithCoder:(NSCoder *)aDecoder
{
if (self = [super init]) {
subject = [aDecoder decodeObjectForKey:@"SUBJECT"];
link = [aDecoder decodeObjectForKey:@"LINK"];
arraylist = [aDecoder decodeObjectForKey:@"ARRAYLIST"];
}
return self;
}
//初始化数据成员
-(id)initWithSubject:(NSString *)_subject link:(NSURL *) _link
{
if (self = [super init]) {
subject = _subject;
link = _link;
arraylist = [[NSMutableArray alloc] initWithCapacity:1];
}
return self;
}
//添加新闻
-(void)addNews:(News *)_news
{
BOOL flag = YES;
for (id objc in arraylist)
{
if (_news == objc)
{
NSLog(@"News exist！！");
flag = NO;
}
}
if (flag)
{
[arraylist addObject:_news];
}
}
//移除指定的下标元素
-(void)removeNews:(NSInteger)index
{
[arraylist removeObjectAtIndex:index];
}
//计算数组元素个数
-(NSInteger)newsCount
{
return [arraylist count];
}
//打印函数 输出标题、链接、数组
-(NSString *)description
{
NSString *str = [NSString stringWithFormat:@"Subject:%@,Link:%@,Arraylist:%@",subject,link,arraylist];
return str;
}
@end
=========================================================
ChannelManagement.h 文件：
#import#import "Channel.h"
@interface ChannelManagement : NSObject
{
NSMutableDictionary *channels; //频道管理字典
NSString *filename; //文件名
}
@property(nonatomic,retain) NSMutableDictionary *channels;
@property(nonatomic,retain) NSString *filename;
//始化数据成员
-(id)initWithFileName:(NSString *)_filename;
//添加一个字典对象
-(void)addChannels:(NSDictionary *)_channel;
//移除字典中指定下标的元素
-(void)removeChannels:(NSInteger)index;
//查找字典中指定下标的元素
-(Channel*)channelAtIndex:(NSInteger)index;
//计算字典里元素的个数
-(NSInteger)channelCount;
//添加函数 字典中添加新闻和频道
-(void)addNews:(News *)_news andChannel:(Channel *)_channel;
//移除频道下面的指定元素
-(void)removeNews:(NSInteger)index channel:(Channel *)_channel;
//查找频道下面指定的元素
-(News*)newsAtIndex:(NSInteger)index channel:(Channel *)_channel;
//计算字典中频道下指定的元素
-(NSInteger)newCountAtChannel: (Channel*)_channel;
//保存函数 把字典中的成员写入文件
-(void) write;
//还原函数 把字典中的成员读取出来
-(void) read;
//打印函数 输出频道、存放数据的文件名
-(NSString *)description;
@end
=========================================================
ChannelManagement.m 文件：
#import "ChannelManagement.h"
@implementation ChannelManagement
@synthesize channels,filename;
//初始化数据成员
-(id)initWithFileName:(NSString *)_filename
{
if(self = [super init])
{
filename = _filename;
channels = [[NSMutableDictionary alloc]initWithCapacity:2];
}
return self;
}
//添加一个字典对象
-(void)addChannels:(NSDictionary *)_channel
{
// [channels setObject:_channel.subject forKey:@"channel.subject"];
// [channels setObject:_channel.link forKey:@"channel.link"];
// [channels setObject:_channel.arraylist forKey:@"channel.arraylist"];
[channels addEntriesFromDictionary:_channel];
}
//移除字典中指定下标的元素
-(void)removeChannels:(NSInteger)index
{
NSArray *array = [channels allKeys];
NSString *str = [array objectAtIndex:index];
[channels removeObjectForKey:str];
}
//查找字典中指定下标的元素
-(Channel*)channelAtIndex:(NSInteger)index
{
NSArray *array = [channels allKeys];
NSString *str = [array objectAtIndex:index];
Channel * ch = [channels objectForKey:str];
return ch;
}
//计算字典里元素的个数
-(NSInteger)channelCount
{
return [channels count];
}
//添加函数 字典中添加新闻和频道
-(void)addNews:(News *)_news andChannel:(Channel *)_channel
{
// for (id objc in _channel.arraylist)
// {
// if (_news == objc)
// {
// NSLog(@"%@ have exist this news",_channel.subject);
// }
// }
[_channel addNews:_news];
NSString *sub = _channel.subject;
[channels setObject:_channel forKey:sub];
}
//移除频道下面的指定元素
-(void)removeNews:(NSInteger)index channel:(Channel *)_channel
{
[_channel.arraylist removeObjectAtIndex:index];
}
//查找频道下面指定的元素
-(News*)newsAtIndex:(NSInteger)index channel:(Channel *)_channel
{
News *ne = [_channel.arraylist objectAtIndex:index];
return ne;
}
//计算字典中频道下指定的元素
-(NSInteger)newCountAtChannel: (Channel*)_channel
{
NSInteger count = [_channel.arraylist count];
return count;
}
//保存函数 把字典中的成员写入文件
-(void)write
{
BOOL result = [NSKeyedArchiver archiveRootObject:channels toFile:filename];
if (result)
{
NSLog(@"write success!");
}
else
{
NSLog(@"write fail!");
}
}
//还原函数 把字典中的成员读取出来
-(void)read
{
NSArray *array = [NSKeyedUnarchiver unarchiveObjectWithFile:filename];
NSString *str = [NSString stringWithFormat:@"%@",array];
//NSLog(@"Content of %@ is : %@",filename,array);
NSLog(@"%@",str);
}
//打印函数 输出频道、存放数据的文件名
-(NSString *)description
{
NSLog(@"**************************频道管理***************************");
NSString *str = [NSString stringWithFormat:@"filename:%@",filename];
NSLog(@"***********************************************************");
NSArray *array = [channels allKeys];
for (id element in array ) {
NSLog(@"CHANNEL:%@ = %@",element,[channels objectForKey:element]);
}
return str;
}
@end
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