ObjectC----實現簡單的通訊錄(增刪改查)

阿新 • • 發佈：2019-01-23

經過兩天的低迷，狀態在慢慢的迴歸了，生活還要繼續，人生還需奮鬥！

祝：好人一生平安！！！

========================================================================

題目描述：

1.建立AddressBook類. 1)使⽤用字典作為容器,字典的Key值為分組名(姓名⾸首字⺟母,⼤大寫),value值為陣列,陣列

中存放聯絡⼈人(Person例項).(5分) 2)新增聯絡⼈人.要求(20分)
不能有重名).
a.判斷姓名和電話不能為空否則新增失敗. b.判斷是否已經存在分組,存在直接儲存.不存在建立分組後再儲存.(注:聯絡⼈人
c.新增成功返回YES,姓名為空或者有重名的新增失敗返回NO. d.資料使⽤用Person儲存.
e.⽅方法:- (BOOL)addPerson:(Person *)aPerson;
3)按照姓名刪除聯絡⼈人.(15分)
a.⽅方法:- (BOOL)deletePersonWithName:(NSString*)aPersonName; b.刪除成功返回YES,否則返回NO; c.當刪除聯絡⼈人後分組為空時,需要刪除該分組。
4)刪除⼀一個分組.(10分)
a:⽅方法:- (BOOL)deleteGroup:(NSString *)aGroupName; b.刪除成功返回YES,否則返回NO;
5)根據電話查詢某個聯絡⼈人.(10分)
a:⽅方法:-(Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum; b:如果找到返回該聯絡⼈人,否則返回nil. c.忽略電話重複問題,只返回第⼀一個查詢到的聯絡⼈人。
6)根據性別查詢聯絡⼈人,並將查到的聯絡⼈人按照年齡升序排序(15分) a:⽅方法:-(NSArray *)findPersonsWithSex:(NSString *)aSex; b:查詢到聯絡⼈人放⼊入陣列,排序的時候使⽤用block.
7)根據姓名,更改聯絡⼈人資訊.(10分) a:⽅方法:-(BOOL)changePersonWithName:(NSString *)name phoneNum:
(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger) aAge; b:找到該聯絡⼈人並修改該成功返回YES,否則返回NO
c.修改電話、性別、年齡,引數不能為空。
8)展⽰示通訊錄中的所有聯絡⼈人資訊(5分) a:⽅方法:-(void)showAll;
b.通過重寫description⽅方法展⽰示聯絡⼈人資訊。
2.使⽤用Person類.(屬性:姓名,年齡,性別,電話,分組) 1)分組是姓名⾸首字⺟母(⼤大寫),使⽤用提供的NSString類⺫⽬目中的⽅方法獲取。 2)重寫description⽅方法,輸出“姓名:張三性別:男年齡:22 電話:
123456789”.(5分) 3)定義Person類的便利構造器⽅方法,⽅方法包含引數:姓名、年齡、性別、電話.(5分)
3.main函式中的實現 1).建立⼀一個AddressBook類的例項(通訊錄).
2).使⽤用便利構造器建立四個Person類的例項(聯絡⼈人). 姓名:Lucy 性別:⼥女電話:123 年齡:21
姓名:Joe 性別:男電話:456 年齡:17
姓名:Baby 性別:⼥女電話:789 年齡:27

姓名:Linda 性別:⼥女電話:000 年齡:21 3).調⽤用新增聯絡⼈人⽅方法,將四個聯絡⼈人新增到通訊錄中.  4).根據電話查詢聯絡⼈人,並列印(查詢電話:456); 5).根據性別查詢聯絡⼈人,並將查到的聯絡⼈人按照年齡升序排序,並列印(查詢性別:⼥女) 6).根據姓名,更改聯絡⼈人資訊.(修改Linda的資訊: 性別:⼥女電話:012 年齡:25); 7).按照姓名刪除聯絡⼈人,並展⽰示通訊錄中所有⼈人資訊.(刪除聯絡⼈人:Baby) 8).刪除⼀一個分組,並展⽰示通訊錄中所有⼈人資訊.(刪除L組)

=========================================================================

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;">// 根據姓名查詢對應的人
</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;
}



// 判斷是否存在guoupName組
- (BOOL)isGroupExist:(NSString *)groupName
{
    for (NSString * key in _dic) {
        if ([key isEqualToString:groupName]) {
            return YES;
        }
    }
    return NO;
}

// 新增聯絡人
- (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;
}
// 按照姓名刪除聯絡人
- (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;
}
// 刪除一個分組
- (BOOL)deleteGroup:(NSString *)aGroupName
{
    BOOL isGroubExt = [self isGroupExist:aGroupName];
    if (!isGroubExt) {
        NSLog(@"The Group Is Not Exist!");
        return NO;
    }
    [_dic removeObjectForKey:aGroupName];
    return YES;
}
// 根據電話查詢某個聯絡人
- (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;
}
// 根據性別查詢聯絡人，並將查到的聯絡人按照年齡的升序排序
- (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;
}
// 根據姓名，更改練習人資訊
- (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;
}
// 展示通訊錄中的所有聯絡人資訊
- (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];
}

// 單獨給NSMutableDictiona型別的dic分配空間</span></span>

<span style="color:#333333;"><span style="font-size:18px;">// 也可在主函式中單獨給dic分配NSMutableDictionary空間，這裡就沒用重定義了
- (instancetype)init
{
    self = [super init];
    if (self) {
        _dic = [[NSMutableDictionary alloc]init];
    }
    return self;
}</span><span style="font-size: 18px;">
</span></span>

這裡用到了一個uppercasePinYinFirstLetter方法，用來取出NSString型別字串的首字母並把它轉化為大寫，這是在NSString的分類（類目）中實現的。

我定義的分類是NSString+firstCapitalLetter，把這個類目當做模板來用，別的工程把該類目考入能直接用。

NSString+firstCapitalLetter.h中實現

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

NSString+firstCapitalLetter.m

#import "NSString+firstCapitalLetter.h"

#define HANZI_START 19968
#define HANZI_COUNT 20902
static 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

==============================================
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的便利構造器
+ (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，有些傷心

- (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;
    
}

=================================================================

// 此句只能給AddressBook中的dic分配了一個指標的空間大小
    AddressBook * addressBook = [[AddressBook alloc]init];
    // 單獨給NSMutableDictionary型別的dic分配空間
    // 如果不使用AddressBook.m的init方法則用這一句就可以替代它
    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];

==================================================================

人活在世，不僅僅為了自己，更多的是不要讓那些關心你的人失望！！！！

=======================================================

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