ObjectC----实现简单的通讯录(增删改查)

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经过两天的低迷，状态在慢慢的回归了，生活还要继续，人生还需奋斗！

祝：好人一生平安！！！

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题目描述：

1.创建AddressBook类. 1)使⽤用字典作为容器,字典的Key值为分组名(姓名⾸首字⺟母,⼤大写),value值为数组,数组

中存放联系⼈人(Person实例).(5分) 2)添加联系⼈人.要求(20分)
不能有重名).
a.判断姓名和电话不能为空否则添加失败. b.判断是否已经存在分组,存在直接存储.不存在创建分组后再存储.(注:联系⼈人
c.添加成功返回YES,姓名为空或者有重名的添加失败返回NO. d.数据使⽤用Person存储.
e.⽅方法:- (BOOL)addPerson:(Person *)aPerson;
3)按照姓名删除联系⼈人.(15分)
a.⽅方法:- (BOOL)deletePersonWithName:(NSString*)aPersonName; b.删除成功返回YES,否则返回NO; c.当删除联系⼈人后分组为空时,需要删除该分组。
4)删除⼀一个分组.(10分)
a:⽅方法:- (BOOL)deleteGroup:(NSString *)aGroupName; b.删除成功返回YES,否则返回NO;
5)根据电话查找某个联系⼈人.(10分)
a:⽅方法:-(Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum; b:如果找到返回该联系⼈人,否则返回nil. c.忽略电话重复问题,只返回第⼀一个查找到的联系⼈人。
6)根据性别查找联系⼈人,并将查到的联系⼈人按照年龄升序排序(15分) a:⽅方法:-(NSArray *)findPersonsWithSex:(NSString *)aSex; b:查找到联系⼈人放⼊入数组,排序的时候使⽤用block.
7)根据姓名,更改联系⼈人信息.(10分) a:⽅方法:-(BOOL)changePersonWithName:(NSString *)name phoneNum:
(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger) aAge; b:找到该联系⼈人并修改该成功返回YES,否则返回NO
c.修改电话、性别、年龄,参数不能为空。
8)展⽰示通讯录中的所有联系⼈人信息(5分) a:⽅方法:-(void)showAll;
b.通过重写description⽅方法展⽰示联系⼈人信息。
2.使⽤用Person类.(属性:姓名,年龄,性别,电话,分组) 1)分组是姓名⾸首字⺟母(⼤大写),使⽤用提供的NSString类⺫⽬目中的⽅方法获取。 2)重写description⽅方法,输出“姓名:张三性别:男年龄:22 电话:
123456789”.(5分) 3)定义Person类的便利构造器⽅方法,⽅方法包含参数:姓名、年龄、性别、电话.(5分)
3.main函数中的实现 1).创建⼀一个AddressBook类的实例(通讯录).
2).使⽤用便利构造器创建四个Person类的实例(联系⼈人). 姓名:Lucy 性别:⼥女电话:123 年龄:21
姓名:Joe 性别:男电话:456 年龄:17
姓名:Baby 性别:⼥女电话:789 年龄:27

姓名:Linda 性别:⼥女电话:000 年龄:21 3).调⽤用添加联系⼈人⽅方法,将四个联系⼈人添加到通讯录中.  4).根据电话查找联系⼈人,并打印(查找电话:456); 5).根据性别查找联系⼈人,并将查到的联系⼈人按照年龄升序排序,并打印(查找性别:⼥女) 6).根据姓名,更改联系⼈人信息.(修改Linda的信息: 性别:⼥女电话:012 年龄:25); 7).按照姓名删除联系⼈人,并展⽰示通信录中所有⼈人信息.(删除联系⼈人:Baby) 8).删除⼀一个分组,并展⽰示通信录中所有⼈人信息.(删除L组)

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AddressBook.h:

<span style="font-size:18px;">- (BOOL)addPerson:(Person *)aPerson;- (BOOL)isGroupExist:(NSString *)groupName;- (Person *)selectPersonWithName:(NSString *)name;- (BOOL)deletePersonWithName:(NSString *)aPersonName;- (BOOL)deleteGroup:(NSString *)aGroupName;- (Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum;- (NSArray *)findPersonsWithSex:(NSString *)aSex;- (BOOL)changePersonWithName:(NSString *)name phone:(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger)aAge;- (void)showAll;</span>

AddressBook.m:

<span style="color:#333333;"><span style="font-size: 18px;">// 根据姓名查找对应的人</span><span style="font-size:18px;">- (Person *)selectPersonWithName:(NSString *)name{    NSString * grup = [name uppercasePinYinFirstLetter];    BOOL  isGupExist = [self isGroupExist:grup];    if (!isGupExist) {        return nil;    }    else{        NSMutableArray * arr = [_dic objectForKey:grup];        for (Person * per in arr) {            if ([per.name isEqualToString:name]) {                return per;            }        }    }    return nil;}// 判断是否存在guoupName组- (BOOL)isGroupExist:(NSString *)groupName{    for (NSString * key in _dic) {        if ([key isEqualToString:groupName]) {            return YES;        }    }    return NO;}// 添加联系人- (BOOL)addPerson:(Person *)aPerson{    Person * per = [self selectPersonWithName:aPerson.name];    if (per) {        NSLog(@"The Person is  Exist!");        return NO;    }    BOOL isGroupExt = [self isGroupExist:aPerson.group];    if (!isGroupExt) {        NSMutableArray *arr = [NSMutableArray array];        [_dic setObject:arr forKey:aPerson.group];        [arr addObject:aPerson];    }    else{        NSMutableArray * arr = [_dic objectForKey:aPerson.group];        [arr addObject:aPerson];    }    return YES;}// 按照姓名删除联系人- (BOOL)deletePersonWithName:(NSString *)aPersonName{    Person * per = [self selectPersonWithName:aPersonName];    if (per == nil) {        NSLog(@"The Person Is Not Exist!");        return NO;    }    NSMutableArray *arr = [_dic objectForKey:per.group];    [arr removeObject:per];    if (arr == nil) { // [arr count]==0        [_dic removeObjectForKey:per.group];    }    return YES;}// 删除一个分组- (BOOL)deleteGroup:(NSString *)aGroupName{    BOOL isGroubExt = [self isGroupExist:aGroupName];    if (!isGroubExt) {        NSLog(@"The Group Is Not Exist!");        return NO;    }    [_dic removeObjectForKey:aGroupName];    return YES;}// 根据电话查找某个联系人- (Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum{    for (NSString * key in _dic) {        NSMutableArray * arr = [_dic objectForKey:key];        for (Person * per in arr) {            if ([per.phone isEqualToString:aPhoneNum]) {                return per;            }        }    }    return nil;}// 根据性别查找联系人，并将查到的联系人按照年龄的升序排序- (NSArray *)findPersonsWithSex:(NSString *)aSex{    NSMutableArray * result = [NSMutableArray array];    for (NSString *key in _dic) {        NSMutableArray *arr = [_dic objectForKey:key];        for (Person *per in arr) {            if ([per.sex isEqualToString:aSex]) {                [result addObject:per];            }        }    }    NSArray * arr1 = [result sortedArrayUsingComparator:^NSComparisonResult(Person *obj1, Person *obj2) {        if (obj1.age > obj2.age) {            return NSOrderedDescending;        }        else if(obj1.age == obj2.age)        {            return NSOrderedSame;        }        else            return NSOrderedAscending;    }];    return arr1;}// 根据姓名，更改练习人信息- (BOOL)changePersonWithName:(NSString *)name phone:(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger)aAge{    Person *per = [self selectPersonWithName:name];    if (!per) {        NSLog(@"NO Person!");        return NO;    }                per.name = name;        per.phone = aNum;        per.sex = aSex;        per.age = aAge;        return YES;}// 展示通讯录中的所有联系人信息- (void)showAll{    for (NSString *key in _dic) {        NSMutableArray * arr = [_dic objectForKey:key];        for (Person *per in arr) {            NSLog(@"%@",per);        }    }}- (void)dealloc{    [_dic release];    [super dealloc];}// 单独给NSMutableDictiona类型的dic分配空间</span></span>

<span style="color:#333333;"><span style="font-size:18px;">// 也可在主函数中单独给dic分配NSMutableDictionary空间，这里就没用重定义了- (instancetype)init{    self = [super init];    if (self) {        _dic = [[NSMutableDictionary alloc]init];    }    return self;}</span><span style="font-size: 18px;"></span></span>

这里用到了一个uppercasePinYinFirstLetter方法，用来取出NSString类型字符串的首字母并把它转化为大写，这是在NSString的分类（类目）中实现的。

我定义的分类是NSString+firstCapitalLetter，把这个类目当做模板来用，别的工程把该类目考入能直接用。

NSString+firstCapitalLetter.h中实现

<span style="font-size:18px;">#import <Foundation/Foundation.h>#define ALPHA@"ABCDEFGHIJKLMNOPQRSTUVWXYZ#"char pinyinFirstLetter(unsigned short hanzi);@interface NSString (firstCapitalLetter)// 提供首字母大写- (NSString *) uppercasePinYinFirstLetter;- (NSString *) lowercasePinYinFirstLetter;@end</span>

NSString+firstCapitalLetter.m

#import "NSString+firstCapitalLetter.h"#define HANZI_START 19968#define HANZI_COUNT 20902static char firstLetterArray[HANZI_COUNT] ="ydkqsxnwzssxjbymgcczqpssqbycdscdqldylybssjgyqzjjfgcclzznwdwzjljpfyynnjjtmynzwzhflzppqhgccyynmjqyxxgd"；

char pinyinFirstLetter(unsigned short hanzi){int index = hanzi - HANZI_START;if (index >= 0 && index <= HANZI_COUNT){return firstLetterArray[index];}else{return hanzi;}}@implementation NSString(firstCapitalLetter)- (NSString *) uppercasePinYinFirstLetter{    unichar firstLetter = [self characterAtIndex:0];    char cFirstLetter = pinyinFirstLetter(firstLetter);    return [[NSString stringWithFormat:@"%c",cFirstLetter] uppercaseString];}- (NSString *) lowercasePinYinFirstLetter{    unichar firstLetter = [self characterAtIndex:0];    char cFirstLetter = pinyinFirstLetter(firstLetter);    return [[NSString stringWithFormat:@"%c",cFirstLetter] lowercaseString];}@end

模板用就行

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Person.h

<span style="font-size:14px;">@property(nonatomic,copy)NSString * name;@property(nonatomic,assign)NSInteger age;@property(nonatomic,copy) NSString * sex;@property(nonatomic,copy)NSString * phone;@property(nonatomic,copy)NSString * group;// person的便利构造器+ (instancetype)personWithName:(NSString *)name                           age:(NSInteger)age                           sex:(NSString *)sex                         phone:(NSString *)phone;- (instancetype)initWithName:(NSString *)name age:(NSInteger)age sex:(NSString *)sex phone:(NSString *)phone;</span>

Person.m

- (void)setName:(NSString *)name{    if (_name != name) {        [_name release];        _name = [name copy];    }    self.group = [name uppercasePinYinFirstLetter];}

最近事情有些多，有些伤心

- (NSString *)description{    return [NSString stringWithFormat:@"name=%@,age=%ld,sex=%@,phone=%@",_name,_age,_sex,_phone];}//+ (instancetype)personWithName:(NSString *)name                           age:(NSInteger)age                           sex:(NSString *)sex                         phone:(NSString *)phone{    Person * per = [[Person alloc]initWithName:name age:age sex:sex phone:phone];    return [per autorelease];    }//- (instancetype)initWithName:(NSString *)name age:(NSInteger)age sex:(NSString *)sex phone:(NSString *)phone{    if (self = [super init]) {        self.name  = name;        self.age   = age;        self.sex   = sex;        self.phone = phone;        //=================        self.group = [name uppercasePinYinFirstLetter];    }    return self;    }

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// 此句只能给AddressBook中的dic分配了一个指针的空间大小    AddressBook * addressBook = [[AddressBook alloc]init];    // 单独给NSMutableDictionary类型的dic分配空间    // 如果不使用AddressBook.m的init方法则用这一句就可以替代它    addressBook.dic = [[NSMutableDictionary alloc] init];           Person * per1 = [Person personWithName:@"Lucy" age:21 sex:@"女" phone:@"123"];    Person * per2 = [Person personWithName:@"Joe" age:17 sex:@"男" phone:@"456"];    Person * per3 = [Person personWithName:@"Baby" age:27 sex:@"女" phone:@"789"];        Person * per4 = [Person personWithName:@"Linda" age:21 sex:@"女" phone:@"000"];    //========================    [addressBook addPerson:per1];    [addressBook addPerson:per2];    [addressBook addPerson:per3];    [addressBook addPerson:per4];    [addressBook showAll];    //========================    Person * p = [addressBook findPersonWithPhoneNum:@"456"];    if (!p) {        NSLog(@"NULL!");    }    else{    NSLog(@"%@",p);    }     //========================        NSArray * arr = [addressBook findPersonsWithSex:@"女"];    NSLog(@"%@",arr);    //========================    [addressBook changePersonWithName:@"Linda" phone:@"012" sex:@"女" age:25];    NSLog(@"%@",[addressBook selectPersonWithName:@"Linda"]);    //========================    [addressBook deletePersonWithName:@"Baby"];    [addressBook showAll];//    //========================    [addressBook deleteGroup:@"L"];    [addressBook showAll];[addressBook showAll];

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